Abstract: Presented is a catalyst composition having exceptional properties for converting sulfur, sulfur compounds, and carbon monoxide contained in gas streams by catalyzed hydrolysis, hydrogenation and water-gas shift reactions. The catalyst comprises underbedded molybdenum and cobalt with an overlayer of molybdenum and cobalt. These metals are present in the catalyst within certain concentration ranges and relative weight ratios. The underbedded metals are present in the catalyst within a specified range relative to the overlayer and total metals. The underbedded metals are formed by co-mulling an inorganic oxide with the catalytically active metals of molybdenum and cobalt. The co-mulled mixture is calcined and then impregnated with overlaid molybdenum and cobalt.

Abstract: The present disclosure provides compositions including method of producing H2, variable volume reactors, methods of using variable volume reactors, and the like.

Abstract: Disclosed herein is a method of regenerating a sorbent of gas in a capture process of said gas, wherein the capture process comprises recirculating the sorbent between a gas capturing system and regenerating reactor system, the method comprising the regenerating reactor system performing the steps of: receiving a solid sorbent to be regenerated, wherein the sorbent is a sorbent of carbon dioxide gas; generating heat by combusting a fuel with an oxidising agent in the presence of a catalyst; regenerating the sorbent by using the generated heat to indirectly heat the sorbent so that the sorbent releases carbon dioxide gas; outputting the regenerated sorbent; and outputting the released carbon dioxide gas. Advantages of the gas capture system include a higher efficiency than known techniques.

Abstract: A process for producing a magnesium aluminate spinel comprising the steps of: i) preparing a magnesium suspension containing a magnesium compound; ii) preparing an aluminum suspension containing an aluminum compound; iii) feeding the magnesium suspension and aluminum suspension independently into a spray dryer nozzle to form a mixed magnesium, aluminum suspension; iv) feeding the mixed magnesium, aluminium suspension from the spray dryer nozzle into a spray dryer to form a mixed magnesium and aluminum compound; and v) calcining the mixed magnesium and aluminum compound to generate a magnesium aluminate spinel.

Abstract: A system for removing carbon dioxide from a carbon dioxide laden gas mixture, the system comprising two groups of carbon dioxide removal structures, each removal structure within each group comprising a porous solid mass substrate supported on the structure; and a sorbent that is capable of adsorbing or binding to carbon dioxide, to remove carbon dioxide from a gas mixture, the sorbent being supported upon the surfaces of the porous mass substrate solid; an endless loop support for each of the groups of the removal structures, the endless loop support being so arranged as to move the support structures of each group along a closed curve while being exposed to a stream of the gas mixture; and a sealable regeneration box at one location along each of the endless loop supports, in which, when a porous solid mass substrate is sealed in place therein, carbon dioxide adsorbed upon the sorbent is stripped from the sorbent and the sorbent regenerated; each removal structural supporting a porous substrate in a positio

Abstract: A machine including a frame, a traction assembly and an actuator disposed between the frame and the traction assembly is disclosed. The actuator is configured to raise the frame to a serviceable height relative to the traction assembly. The machine further includes a support rod configured to be disposed between the frame and the traction assembly when the frame is at the serviceable height such that the support rod is magnetically held on one of the frame and the traction assembly and the support rod defines a gap with other of the frame and the traction assembly. The support rod is configured to abut the other of the frame and the traction assembly when a height of the frame relative to the traction assembly decreases to a height less than the serviceable height.

Abstract: A system for removing carbon dioxide from a carbon dioxide laden gas mixture, the system comprising two groups of carbon dioxide removal structures, each removal structure within each group comprising a porous solid mass substrate supported on the structure and a sorbent that is capable of adsorbing or binding to carbon dioxide, to remove carbon dioxide from a gas mixture, the sorbent being supported upon the surfaces of the porous mass substrate solid; an endless loop support for each of the groups of the removal structures, the endless loop support being so arranged as to move the support structures of each group along a closed curve while being exposed to a stream of the gas mixture; and a sealable regeneration box at one location along each of the endless loop supports, in which, when a porous solid mass substrate is sealed in place therein, carbon dioxide adsorbed upon the sorbent is stripped from the sorbent and the sorbent regenerated; each removal structural supporting a porous substrate in a position

Abstract: The present invention discloses a method of removing sulfur oxides and/or nitrogen oxides in a regeneration flue gas emitted from a regenerator of a catalytic cracking plant and recovering the elemental sulfur and an apparatus therefor.

Abstract: A method of removing mercury and/or sulfur from a fluid stream comprising contacting the fluid stream with a sorbent comprising a core and a porous shell formed to include a plurality of pores extending therethrough and communicating with the core. The core comprises a copper compound selected from the group consisting of a basic copper oxysalt, a copper oxide, and a copper sulfide.

Abstract: Articles for capturing or separating a target gas from a gas stream may include a porous substrate such as a flexible sheet or mat, or a rigid ceramic monolith impregnated or coated with a sorbent composition. The sorbent composition may include a polyamine and a coexistent polymer chemically bonded to the polyamine. The polyamine may include a polyethylenimine. The coexistent polymer may include a polyurethane, a polyolefin-acrylic acid copolymer, or a combination thereof. The sorbent composition may be substantially less water-insoluble than compositions containing only a polyamine and may have high durability and good adsorption capacity for acidic target gases such as carbon dioxide. Methods for preparing the articles using aqueous polymer solutions are provided. Methods for capturing or separating target gases using the articles are provided.

Abstract: The preparation of nano-oxide coated adsorbent, which is useful for treatment of toxic gases, by coating of composite materials containing hydrotalcite over ceramic monolithic substrates. Oxides and salts of metals are reacted in a known manner to prepare hydrotalcites or mixed metal layered hydroxides such as Mg—Al, Ca—Al, Zn—Al, Zn—Cr type possessing positive layer charge, from which a stable gel is prepared by adding swellable clay, e.g., montmorillonite etc. in different hydrotalcite:clay ratio in an aqueous medium and homogenizing the same with high speed homogenizer and ultrasonicator in a high intensity ultrasonic processor. The gel is dip-coated over cordierite/mulite honey-comb monolithic supports. The dip-coated monoliths are dried and calcined to develop the alumino-silicate supported nano-oxide coats over honey-comb ceramic substrates for carrying out adsorption of H2S and SO2 gas in a He flow in various flow rates at 400 to 1000° C. temperature in a cylindrical quartz tube.

Abstract: Disclosed is an sorbent for removing sulfur dioxide (SO2) contained in combustion flue gases or in the atmosphere by using a diamine-based ionic liquid or a diamine compound supported by a polymer resin. To be specific, the present invention relates to a method of using a tertiary diamine compound immobilized on a polymer surface as a SO2 sorbent and also relates to a novel sorbent for absorbing or adsorbing a sulfur dioxide hydrate (SO2.H2O) formed by a bond between SO2 and water.

Abstract: This invention relates to a catalyst material, and its method of making and manufacture, useful for a diversity of chemical production processes as well as various emission control processes. More specifically, it relates to a catalyst composition, preferably comprising a metal oxide felt substrate, with one or more functional surface active constituents integrated on and/or in the substrate surface, which can be used in the removal of sulfur and sulfur compounds from hot gases as well as acting to trap solid particulates and trace metals within these hot gases.

Abstract: Novel adsorbents and their use in a process for the removal of sulfur compounds from distillate fuels are described herein. The novel adsorbents are comprised of nanocrystals of Ni having adsorbed on their surface phosphorus and/or phosphine species, which nanocrystals can be distributed in a micro-/meso-porous support material.

Abstract: A method of preparing a catalyst composition suitable for removing sulfur from a catalytic reduction system and the catalyst composition prepared by the method are provided. The method of preparation of a catalyst composition, comprises: combining a metal oxide precursor, a catalyst metal precursor and an alkali metal precursor in the presence of a templating agent; hydrolyzing and condensing to form an intermediate product that comprises metal oxide, alkali metal oxide, and catalyst metal; and calcining to form a templated amorphous metal oxide substrate having a plurality of pores wherein the alkali metal oxide and catalyst metal are dispersed in an intermixed form in the metal oxide substrate.

Abstract: The preparation of nano-oxide coated adsorbent, which is useful for treatment of toxic gases, by coating of composite materials containing hydrotalcite over ceramic monolithic substrates. Oxides and salts of metals are reacted in a known manner to prepare hydrotalcites or mixed metal layered hydroxides such as Mg—Al, Ca—Al, Zn—Al, Zn—Cr type possessing positive layer charge, from which a stable gel is prepared by adding swellable clay, e.g., montmorillonite etc. in different hydrotalcite:clay ratio in an aqueous medium and homogenising the same with high speed homogeniser and ultrasonicator in a high intensity ultrasonic processor. The gel is dip-coated over cordierite/mulite honey-comb monolithic supports. The dip-coated monoliths are dried and calcined to develop the alumino-silicate supported nano-oxide coats over honey-comb ceramic substrates for carrying out adsorption of H2S and SO2 gas in a He flow in various flow rates at 400 to 1000° C. temperature in a cylindrical quartz tube.

Abstract: A particulate desulphurisation material is described including one or more copper compounds supported on a zinc oxide support material, wherein the desulphurisation material has a copper content in the range 0.1 to 5.0% by weight and a tapped bulk density?1.55 kg/l.

Abstract: The present invention relates to a method for processing a sulfur-containing gas and a hydrogenation catalyst used therefor. The method comprises introducing the sulfur-containing gas into the tail gas hydrogenation unit of a sulfur recovery device, processing it with the hydrogenation catalyst of the present invention, and absorbing the hydrogenated tail gas with a solvent. The hydrogenation catalyst comprises from 0.5 to 3 wt. % of an active component nickel oxide, from 1 to 4 wt. % of an active component cobalt oxide, from 8 to 20 wt. % of an active component molybdenum oxide or tungsten oxide, from 1 to 5 wt. % of a deoxidation auxiliary agent, from 10 to 40 wt. % of TiO2, the balance being ?-Al2O3, based on the weight of the catalyst.

Abstract: A sulfur dioxide reducing composition includes an adsorber and an absorber on the adsorber. The adsorber attracts and holds sulfur dioxide and the absorber reacts irreversibly with the sulfur dioxide.

Abstract: A high capacity filtration media, method of preparing the media, and method of treating a fluid stream with the media are provided. The media contain a porous substrate impregnated with high concentrations of a permanganate. Preferably, the media includes a porous substrate impregnated with at least about 8% permanganate by weight. The media can optionally contain sodium bicarbonate. Improved capacity for the removal of undesirable compounds such as ethylene, formaldehyde, hydrogen sulfide and methyl mercaptan are achieved.

Abstract: Disclosed is a process for the removal of sulfur from a fuel gas stream that additionally contains carbon dioxide and a light olefin as well as an organic sulfur compound. The process includes hydrotreating the fuel gas stream followed by a catalytic reduction of the resulting hydrotreated fuel gas to remove the carbonyl sulfide contained therein that is yielded in the hydrotreating step as a result of the equilibrium reaction of hydrogen disulfide with carbon dioxide to yield carbonyl sulfide and water.

Abstract: Hazardous process gases are heated to auto ignition temperatures by rods and cylinders in a heating chamber. The heated gases and oxygen mix in a combustion chamber, and the gases ignite and combust. Air is introduced to cool the hot combustion products. Particles are separated from the cooled gases. Pure non hazardous gases and air are exhausted.

Abstract: A method for producing a catalyst using an additive layer method includes: (i) forming a layer of a powdered catalyst or catalyst support material, (ii) binding or fusing the powder in said layer according to a predetermined pattern, (iii) repeating (i) and (ii) layer upon layer to form a shaped unit, and (iv) optionally applying a catalytic material to said shaped unit.

Abstract: Oxidative and reductive methods are described for the cost-effective destruction of an ammonia-bearing gas stream, potentially containing minor but significant quantities of hydrogen sulfide (H2S), in a conventional Claus sulfur recovery tail gas treating unit, using controlled rates and compositions of combustion gases in order to obtain the temperatures necessary for the desired destruction of unwanted combustibles.

Abstract: The present invention relates to a method for processing a sulfur-containing gas and a hydrogenation catalyst used therefor. Said method comprises introducing the sulfur-containing gas into the tail gas hydrogenation unit of a sulfur recovery device, processing it with the hydrogenation catalyst of the present invention, absorbing the hydrogenated tail gas with a solvent and then regenerating, the regenerated hydrogen sulfide being recycled to the Claus unit to recover sulfur, the clean tail gas being incinerated in an incinerator to be discharged after reaching the standards. Said sulfur-containing gas comprises from 0 to 6 vol. % of sulfur dioxide and from 0 to 3 vol. % of oxygen, and has a temperature of from 100 to 200° C. The hydrogenation catalyst of the present invention comprises from 0.5 to 3 wt. % of an active component nickel oxide, from 1 to 4 wt. % of an active component cobalt oxide, from 8 to 20 wt. % of an active component molybdenum oxide or tungsten oxide, from 1 to 5 wt.

Abstract: A method of removing mercaptans, heterocyclic sulfur compounds, and/or COS from a fluid stream comprising contacting the fluid stream with a sorbent comprising a mixture of Cu2O and metallic copper.

Abstract: A method of removing H2S, a mercaptan, and/or COS from a fluid stream is presented. The method comprises contacting the fluid stream with a sorbent comprising Cu2O.

Abstract: A method and system for desulfurization comprising first and second metal oxides; a walled enclosure having an inlet and an exhaust for the passage of gas to be treated; the first and second metal oxide being combinable with hydrogen sulfide to produce a reaction comprising a sulfide and water; the first metal oxide forming a first layer and the second metal oxide forming a second layer within the walled surroundings; the first and second layers being positioned so the first layer removes the bulk amount of the hydrogen sulfide from the treated gas prior to passage through the second layer, and the second layer removes substantially all of the remaining hydrogen sulfide from the treated gas; the first metal oxide producing a stoichiometrical capacity in excess of 500 mg sulfur/gram; the second metal oxide reacts with the hydrogen sulfide more favorably but has a stoichometrical capacity which is less than the first reactant; whereby the optimal amount by weight of the first and second metal oxides is achieved

Abstract: The present invention generally relates to a process for the formation of a CO2-selective absorption material and/or sulfur-selective absorption material. In one embodiment, the present invention relates to a process for the formation of a CO2-selective absorption material that comprises providing a solid material, providing an amine source, contacting the solid material with the amine source to absorb amine molecules on the surface of the solid material, and contacting the absorbing amine molecules on the solid material surface with a CO2 stream such that upon contact with the amine and the solid material, CO2 binds with the amine functional group of the amine molecule, reducing the potential for the interaction of the amine functional group with the solid surface and increasing amine sites available for CO2 capture.

Abstract: A catalyst composition, a method of preparation of catalyst composition, a catalytic reduction system including the catalyst composition and a system using the catalytic reduction system are provided. The catalyst composition includes a templated amorphous metal oxide substrate, a catalyst material, and a sulfur scavenger material. The catalyst material includes a catalyst metal disposed on the templated metal oxide substrate and the sulfur scavenger includes an alkali metal.

Abstract: A method for producing a substantially desulfurized a hydrocarbon fuel stream at temperatures less than 100° C. The method includes providing a nondesulfurized fuel cell hydrocarbon fuel stream that may include water and passing the fuel stream sequentially through a zeolite Y adsorbent and a selective sulfur adsorbent. The zeolite Y adsorbent may be exchanged with copper ions. The method produces a substantially desulfurized hydrocarbon fuel stream containing less than 50 ppb sulfur.

Abstract: A process for the preparation of a desulfurization material includes: (i) forming a zinc/aluminium hydrotalcite composition, and (ii) calcining the composition to form a zinc oxide/alumina material, in which one or more nickel compounds are included in the hydrotalcite formation step, and/or are impregnated onto the hydrotalcite composition and/or the calcined zinc oxide/alumina material, and the resulting composition dried and recovered.

Abstract: Gas desulfurization sorbents and methods using them for removal of sulfur from gas streams, particularly at high temperatures ranging from 500 to 1000° C. The sorbents and methods are of particular application to produce a sulfur-clean feed from reformate gas generated from readily available transportation fuels containing sulfur. Sorbents of the invention can reduce the sulfur concentration in reformate gas to parts per billion on volume basis (ppbv) levels over a large range of temperatures. Sorbent materials of this invention comprise a nickel phase dispersed on a particulate support or a monolith support. The support can be a high surface area support with surface area of 100 m2/g or higher. The invention also provides systems for desulfurizing reformate gas and systems for providing a desulfurized gas to a fuel cell, particularly a solid oxide fuel cell.

Abstract: A particulate desulfurization material includes one or more nickel compounds, a zinc oxide support material, and one or more alkali metal compounds wherein the nickel content of the material is in the range 0.3 to 10% by weight and the alkali metal content of the material is in the range 0.2 to 10% by weight. A method of making the desulfurization material includes the steps: (i) contacting a nickel compound with a particulate zinc support material and an alkali metal compound to form an alkali-doped composition, (ii) shaping the alkali-doped composition, and (iii) drying, calcining, and optionally reducing the resulting material. The desulfurization material may be used to desulfurize hydrocarbon gas streams with reduced levels of hydrocarbon hydrogenolysis.

Abstract: Disclosed is a composition useful in the hydrolysis of sulfur compounds that are contained in a gas stream. The composition comprises alumina, a group VI metal component and a group VIII metal component. The composition has a pore structure such that a large percentage of its total pore volume is contained within the pores having a pore diameter greater than 10,000 angstroms.

Abstract: A process for removing organic sulfur from a fuel gas stream that further contains light olefins by catalytic hydrodesulfurization to yield a treated fuel gas having an very low concentration of organic sulfur. The effluent of the catalytic hydrodesulfurization reactor may be cooled with a portion thereof being recycled and introduced along with the fuel gas stream that is charged to the hydrodesulfurization reactor. The remaining, unrecycled portion of the effluent may further be treated to remove the hydrogen sulfide that is yielded from by the hydrodesulfurization of the fuel gas stream.

Abstract: A system for removing sulfur from a gaseous stream includes (a) a reaction bed for receiving the gaseous stream and for reacting sulfur dioxide and at least some of the hydrogen sulfide of the gaseous stream into elemental sulfur to provide an elemental sulfur stream and a first product stream; and (b) a circulating fluidized bed comprising (i) a first region for receiving the first product stream and using a sulfur adsorption material to adsorb and remove any remaining hydrogen sulfide from the first product stream to generate saturated sulfur adsorption material and a second product stream substantially free of sulfur; and (ii) a second region for receiving a regeneration stream and for using the regeneration stream to regenerate the saturated sulfur adsorption material and to generate the sulfur dioxide.

Abstract: A system is provided for desulfurizing a hydrocarbon fuel containing a light amount of methanol and a slight amount of water. The desulfurization system uses a Y-type zeolite-based desulfurizing agent containing at least copper arranged upstream of the system and an X-type zeolite-based desulfurizing agent containing at least silver arranged downstream of the system and thus can maintain desulfurization effect for a long period of time.

Abstract: This invention relates to a catalyst material, and its method of making and manufacture, useful for a diversity of chemical production processes as well as various emission control processes. More specifically, it relates to a catalyst composition, preferably comprising a metal oxide felt substrate, with one or more functional surface active constituents integrated on and/or in the substrate surface, which can be used in the removal of sulfur and sulfur compounds from hot gases as well as acting to trap solid particulates and trace metals within these hot gases.

Abstract: A process for removing sulfur compounds from a hydrocarbonaceous gas mixture, which comprises contacting the hydrocarbonaceous gas mixture with an adsorber material comprising copper oxide on magnesium silicate as support material.

Abstract: A method of removing hydrogen sulfide from an emissions stream is disclosed, wherein the method includes directing the emissions stream into a hydrogen sulfide converter having a metal oxide catalyst, adsorbing the hydrogen sulfide in the emissions stream to the metal oxide catalyst in the hydrogen sulfide converter, reacting the hydrogen sulfide with at least one of an oxidant and a reductant in the hydrogen sulfide converter to chemically transform the hydrogen sulfide, and adjusting an air-fuel ratio of the emissions stream based on exhaust temperature of an emission control device, where the adjustment varies a duration of at least one of lean and rich operation to perform the adsorbing and reacting even as exhaust temperature varies.

Abstract: A system and method for removing sulfur-containing contaminants from indoor air includes a panel system having a first layer and a second layer. The first layer can include a base media onto which sodium bicarbonate is attached. The second layer can include a base media onto which activated carbon is attached. Indoor air including sulfur-containing contaminants can contact and pass through the first layer. Sulfuric acid can react with the sodium bicarbonate to produce sodium sulfate, which can, in turn, act as a drying agent for organic sulfur-containing contaminants in the indoor air, such as carbon disulfide and carbonyl sulfide. As a result of such drying, the second layer can more effectively trap and/or bind (adsorb) the organic sulfur-containing contaminants so that these contaminants are removed from the contaminated air. The treated air can be returned to an indoor space of the structure.

Abstract: A method and system for desulfurization comprising first and second metal oxides; a walled enclosure having an inlet and an exhaust for the passage of gas to be treated; the first and second metal oxide being combinable with hydrogen sulfide to produce a reaction comprising a sulfide and water; the first metal oxide forming a first layer and the second metal oxide forming a second layer within the walled surroundings; the first and second layers being positioned so the first layer removes the bulk amount of the hydrogen sulfide from the treated gas prior to passage through the second layer, and the second layer removes substantially all of the remaining hydrogen sulfide from the treated gas; the first metal oxide producing a stoichiometrical capacity in excess of 500 mg sulfur/gram; the second metal oxide reacts with the hydrogen sulfide more favorably but has a stoichiometrical capacity which is less than the first reactant; whereby the optimal amount by weight of the first and second metal oxides is achieve

Abstract: Compositions and associated methods directed to the removal of sulfurous compounds from air are presented herein. The compositions and methods may be able to treat air with H2S concentrations of at least 1000 ppm. The compositions and associated methods are used to remove sulfurous compounds from air associated with wastewater systems in various aspects.

Abstract: Mixing small amounts of an inorganic halide, such as NaCl, to basic copper carbonate followed by calcination at a temperature sufficient to decompose the carbonate results in a significant improvement in resistance to reduction of the resulting copper oxide. The introduction of the halide can be also achieved during the precipitation of the carbonate precursor. These reduction resistant copper oxides can be in the form of composites with alumina and are especially useful for purification of gas or liquid streams containing hydrogen or other reducing agents. These reduction resistant copper oxides can function at near ambient temperatures.

Abstract: A particulate desulphurisation material includes one or more nickel compounds, a zinc oxide support material, and one or more alkali metal compounds wherein the nickel content of the material is in the range 0.3 to 10% by weight and the alkali metal content of the material is in the range 0.2 to 10% by weight. A method of making the desulphurisation material includes the steps: (i) contacting a nickel compound with a particulate zinc support material and an alkali metal compound to form an alkali-doped composition, (ii) shaping the alkali-doped composition, and (iii) drying, calcining, and optionally reducing the resulting material. The desulphurisation material may be used to desulphurise hydrocarbon gas streams with reduced levels of hydrocarbon hydrogenolysis.

Abstract: The invention concerns solids comprising a single tungsten oxide layer on a zirconia support and/or titanium dioxide support, characterized in that the tungsten exhibits tetrahedral co-ordination, before and after calcining. The invention also concerns the method for preparing the solids, and their uses as acid catalysis reactions catalyst.

Abstract: A solid air filtration medium includes an impregnate with an organic amine and an inorganic metal salt. The medium has from about 0.1 to about 25% by weight of impregnate. The impregnate contains from about 0.1 to about 5% by weight organic amine, and the organic amine includes aqueous urea, solid urea, melamine or mixtures thereof. The impregnate contains from about 0.1 to about 5% by weight metal salt, and the metal salt includes magnesium oxide, calcium oxide or mixtures thereof. The impregnate optionally further includes a surfactant such as polyacrylic acid. Methods for forming a solid air filtration medium having an impregnate containing an organic amine and an inorganic metal salt and methods for removing contaminants from a fluid stream are also provided.

Abstract: For the conversion of sulphur-containing compounds present in a gas comprising H2S and sulphur-containing compounds into additional H2S, a step A for bringing said gas into contact with a reducing gas in the presence of a hydrogenation catalyst comprising at least cobalt, molybdenum and an alumina support, the sum of the quantities of cobalt and molybdenum, calculated in the oxide form, being in the range of 3% to 25% by weight, the surface area of said alumina being more than 140 m2/g. In step B at least a fraction of effluent gas from step A is contacted with a catalyst comprising at least one alkaline-earth element, at least one dopant being iron, cobalt or molybdenum and at least one compound of the group constituted by titanium oxide and zirconium oxide, said catalyst for step B) being either in the form of a bulk oxide comprising only said oxides or in the form of a supported oxide.

Abstract: The invention relates to a catalyst for the desulfurization of hydrocarbon-comprising gases, which comprises a support material, with the exception of activated carbons and zeolites, and a silver-comprising active composition, wherein the catalyst has a pore structure having a maximum number of the pores in a pore diameter range from 6 to 11 nm. The invention further provides processes for producing such a catalyst, its use for the desulfurization of hydrocarbon-comprising gases, in particular in fuel cell applications, and a process for the desulfurization of hydrocarbon-comprising gases.