Abstract: The present disclosure provides a method for producing a clean gasoline and a system for producing the same, the method includes: a full range gasoline is subjected to a directional sulfur transfer reaction, then is cut to obtain a light gasoline fraction, a medium gasoline fraction and a heavy gasoline fraction; the light gasoline fraction is treated to obtain an esterified light gasoline; the medium gasoline fraction is treated to obtain a raffinate oil and an extracted oil; the raffinate oil is treated to obtain an esterified medium gasoline; the heavy gasoline fraction is mixed with the extracted oil to obtain a mixed oil, and a one-stage hydrodesulfurization reaction, a two-stage hydrodesulfurization reaction, H2S-removal and a hydrocarbon isomerization/aromatization reaction are carried out successively to obtain a treated heavy gasoline; blending the esterified light gasoline, the esterified medium gasoline and the treated heavy gasoline to obtain a clean gasoline.

Abstract: A method for the oxidation of ethylene to form ethylene oxide is provided that includes passing an aqueous stream through a guard bed and one or more ion exchange treatment beds. The guard bed and the aqueous stream contain from about 0.2 to 20 wt % ethylene glycol. The guard bed contains a cross-linked polystyrene resin, partially functionalized with quaternary ammonium functional groups and the resin has a surface area of greater than 400 m2/g.

Abstract: The present invention relates to a direct conversion of olefin to olefin oxide, which are important and versatile intermediates used in the production of a large variety of valuable consumer products such as polyurethane foams, polymers, alkylene glycol, cosmetics, food emulsifiers and as fumigants and insecticides. More specifically, the present invention provides a process for producing an olefin oxide which comprises reacting an olefin with oxygen in the presence of a halogen compound additive and a catalyst comprising copper, ruthenium or both thereof.

Abstract: This invention relates to catalyst carriers to be used as supports for metal and metal oxide catalyst components of use in a variety of chemical reactions. More specifically, the invention provides a process of formulating an alpha alumina carrier that is suitable as a support for silver and the use of such catalyst in chemical reactions, especially the epoxidation of ethylene to ethylene oxide. The composition comprises at least one hydrated precursor of alpha alumina; an optional alpha alumina; and a binder. The composition is substantially free of seeding particles.

Abstract: This invention relates to a process for converting ethylene to ethylene oxide comprising: flowing reactants comprising ethylene and oxygen or a source of oxygen in a microchannel reactor in contact with a catalyst to form a product comprising ethylene oxide, the reactants undergoing an exothermic reaction in the microchannel reactor; and transferring heat from the microchannel reactor to a heat exchanger.

Abstract: A process for producing propylene oxide, which comprises supplying an organic peroxide and propylene to an epoxidation reactor in which a solid catalyst is packed thereby continuously producing propylene oxide through epoxidation reaction, wherein said process comprises cooling at least a part of the propylene before supplying to separate and remove water contained in the propylene, and supplying the propylene in which water has been separated and removed to the epoxidation reactor.

Abstract: Process for the recovery of ethylene oxide (EO) from fat absorbent (FA) which comprises providing a feed of elevated temperature FA to an EO Stripper, providing a stripping gas feed and contacting the stripping gas feed at elevated temperature with the elevated temperature FA feed, obtaining stripped lean absorbent (LA) and an EO-containing gas, and providing one or more external process stream feeds to the EO Stripper at a location above the elevated temperature FA feed and at a lower temperature with respect to the elevated temperature FA feed thereby concentrating EO in the EO-containing gas. The process can also include one or more impurity removal stages in the form of one or more side draws from the EO Stripper or an EO Stripper Concentrator. The invention also includes an apparatus for performing the process.

Abstract: A method is for producing propylene oxide, the method including the steps of: reacting hydrogen peroxide with propylene either in an acetonitrile solvent or in a mixture of solvents which include acetonitrile and water, in presence of a titanosilicate catalyst, whereby a reaction mixture containing propylene oxide is obtained; separating the reaction mixture obtained in the reacting into a gas and a reaction liquid; and distilling the reaction liquid obtained in the separating, whereby the reaction liquid is separated into a column top liquid containing propylene oxide, and a column bottom liquid including acetonitrile or a combination of acetonitrile and water, in combination with other steps. This enables industrially efficient production of propylene oxide with use of acetonitrile.

Abstract: A process for producing propylene oxide from propylene is disclosed. The process comprises reacting propylene and an oxidant selected from the group consisting of hydrogen peroxide and oxygen in a slurry comprising a catalyst and a solvent having a boiling point of 110° C. or lower to produce a reaction mixture. The reaction mixture including the catalyst is distilled to produce a vapor stream comprising propylene, propylene oxide, and at least a portion of the solvent, and a slurry stream comprising the solvent and the catalyst. At least a portion of the slurry stream is recycled to the reaction step.

Abstract: A catalyst, useful for the direct epoxidation of olefins, is disclosed. The catalyst comprises palladium nanoparticles, support nanoparticles, and a titanium zeolite having a particle size of 2 microns or greater. The palladium nanoparticles are deposited on the support nanoparticles to form supported palladium nanoparticles, and the supported palladium nanoparticles are deposited on the titanium zeolite; or the supported palladium nanoparticles are deposited on a carrier having a particle size of 2 microns or greater. The invention also includes a process for producing an epoxide comprising reacting an olefin, hydrogen and oxygen in the presence of the catalyst. The catalysts are more active in epoxidation reactions, while demonstrating the same or better selectivity.

Abstract: There is disclosed a method for producing propylene oxide, which includes: reacting propylene, oxygen, and hydrogen in the presence of a noble metal catalyst and a titanosilicate catalyst in a liquid phase containing a polycyclic compound, which is unsubstituted or substituted with at least one substituent selected from Group B below, wherein the polycyclic compound is composed of two or more identical or different ring compounds selected from Group A below and the ring compounds are fused, directly bonded, or bonded by a linkage group selected from the group consisting of an oxygen atom, carbon chain, and a group composed of oxygen atom(s) and a carbon chain, provided that said polycyclic compound is not a polycyclic compound having hydroxy groups or oxo groups at para or. ortho positions. Group A consisting of benzene, cyclopentadiene, cycloheptatriene, furane, pyrane, cyclopentene, cyclopentane, cyclohexane, cyclohexene, cyclohexadiene, cycloheptane, cycloheptene, and cycloheptadiene.

Abstract: A process for making propylene oxide from propylene is disclosed. The process comprises reacting propylene, oxygen, and hydrogen in the presence of a catalyst and a solvent to produce a reaction mixture comprising propylene oxide. Separation of propylene, oxygen, hydrogen, and propylene oxide from the reaction mixture results in a residual mixture comprising methanol. A portion of the residual mixture is recycled to the reaction. A portion of the residual mixture is distilled to generate a distilled methanol stream, which is recycled to the reaction.

Abstract: A carrier that may be used in the manufacture of an olefin epoxidation catalyst is provided that is prepared from a process involving depositing boron on the carrier and subsequently calcining the carrier. Also provided is an olefin epoxidation catalyst comprising a silver component deposited on such a calcined carrier. Also provided is a process for the epoxidation of an olefin employing such a catalyst and a process for producing a 1,2-diol, a 1,2-diol ether, or an alkanolamine employing the olefin oxide.

Abstract: A catalyst composition comprising titanium incorporated into a silica support, characterized in that the silica support is a shaped extrudate of silica powder. The catalyst composition is useful in the epoxidation of olefins into alkylene oxides using organic hydroperoxides. The composition can be prepared by extruding silica powder into an extrudate having a selected shape; calcining the extrudate; impregnating the extrudate with a titanium-containing impregnating agent; and drying and calcining the impregnated extrudate.

Abstract: A process is provided for the production of alkylene oxide by catalytic reaction of olefin, hydrogen and oxygen in the presence of promoting buffer salts, the improvement wherein the buffer salts are recovered by electrodialysis and/or crystallization and recycled to the catalytic reaction.

Abstract: A process for making propylene oxide from propylene is disclosed. The process comprises reacting propylene, oxygen, and hydrogen in the presence of a catalyst, a solvent, and a buffer to produce a reaction mixture comprising propylene oxide. Separation of light components from the reaction mixture gives a heavy residue comprising the buffer. The buffer is precipitated from the heavy residue by a precipitating agent.

Abstract: A process for producing an epoxide comprising reacting an olefin, hydrogen and oxygen in the presence of a catalyst comprising a titanium or vanadium zeolite, palladium, and lead. The process results in significantly reduced alkane by-product formed by the hydrogenation of olefin.

Abstract: A catalyst comprising a transition metal zeolite and a noble metal is disclosed. The catalyst is prepared by an extrusion method using a comb-branched polymer as an extrusion aid. The catalyst is used in a reaction to produce epoxide from an olefin, hydrogen, and oxygen. The comb-branched polymer improves the mechanical properties of the extrudate.

Abstract: A process is disclosed for reacting an olefin, hydrogen, and oxygen in a slurry comprising a catalyst and a solvent in a reactor. The gas bubbles in the slurry are in a churn-turbulent flow regime. The process gives improved yield and operational and maintenance advantages.

Abstract: A process is disclosed for reacting an olefin, hydrogen, and oxygen in a slurry comprising a catalyst and a solvent in a reactor having a column and at least one side arm. The column is operated in a churn-turbulent flow regime. The slurry is circulated through the side arm, filtered, and exits the reactor.

Abstract: A catalyst comprising a noble metal supported on a diatomaceous earth and a transition metal zeolite is disclosed. The catalyst is used in an epoxidation process comprising reacting an olefin, hydrogen, and oxygen. The diatomaceous earth is readily available and may be used in a slurry process without further particle size enlargement.

Abstract: A process is provided for the production of alkylene oxide by catalytic reaction of olefin, hydrogen and oxygen in the presence of promoting buffer salts, the improvement wherein the buffer salts are recovered by electrodialysis and/or crystallization and recycled to the catalytic reaction.

Abstract: A TS-1 catalyst suitable for the production of oxirane compounds is prepared by subjecting conventionally formed TS-1 to a size reduction treatment such as milling such that the average particle size weighted by volume of the TS-1 is reduced to less than 10 microns in diameter and the size reduced TS-1 is spray dried.

Abstract: A process for catalytically reacting a fluid reactant mixture in a multi-tubular reactor system to form a fluid product, whereby the reactant mixture is led through at least one reactor tube containing a fixed bed of solid particulate catalyst and surrounded by a heat-exchange fluid, and whereby an upstream portion of the reactor tube is dedicated to pre-heating the reactant mixture and/or a downstream portion of the reactor tube is dedicated to post-cooling the product, characterized in that the upstream portion and/or downstream portion of the reactor tube contains a heat-exchanging essentially rod-shaped insert, the insert having a length of from 1 to 20%, preferably 1 to 5%, of the total length of the reactor tube.

Abstract: Catalysts useful for oxidation reactions are disclosed. The catalysts comprise a titanium zeolite, a transition metal, and a polymer, wherein at least one of the titanium zeolite or transition metal is encapsulated within a thin layer of the polymer. The catalysts are easy to prepare and use, they are easy to recover and reuse, and they provide good conversions in a variety of important oxidation processes, including propylene epoxidation. The invention includes a process which comprises oxidizing an organic compound in the presence of hydrogen, oxygen, and the catalyst, wherein the transition metal catalyzes formation of hydrogen peroxide in situ.

Abstract: Large crystals of titanium silicalite or intergrowths of intergrown smaller crystals, having a mean particle size greater than 2 ?m, have been found catalytically effective at commercially reasonable rates for the epoxidation of olefins in the presence of hydrogen peroxide. Crystals synthesized with a silica source having a low sodium content exhibit high levels of production and selectivity. The crystals have a low attrition rate and are easily filterable from a product stream.

Abstract: A process for the regeneration of a zeolite catalyst which comprises treating the catalyst thermally in the presence of a gas stream at temperatures above 120° C., the weight-based residence time of the gas stream over the catalyst during the thermal treatment being greater than 2 hours.

Abstract: A material especially useful for the selective oxidation of hydrocarbons and other organic compounds includes a non-crystalline, porous inorganic oxide having at least 97 volume percent mesopores based on micropores and mesopores, and at least one catalytically active metal selected from the group consisting of one or more transition metal and one or more noble metal.

Abstract: The present invention relates to an integrated process for the preparation in continuous of epoxides which comprises: (a) preparing an alcoholic or hydro-alcoholic solution of hydrogen peroxide in a concentration of over 3% by weight, using a gaseous stream containing hydrogen, oxygen and an inert gas, in the presence of a bimetallic catalyst based on palladium and platinum as active components; (b) putting the alcoholic or hydro-alcoholic solution of hydrogen peroxide obtained in step (a) in contact with an olefin and a buffering agent, in the presence of an epoxidation catalyst suspended in the reaction solvent, in order to obtain a reaction mixture containing the epoxide corresponding to the olefin, water and alcoholic solvent; (c) treating the alcoholic stream leaving step (b), after separation of the epoxide, in order to eliminate the nitrogenated compounds present; (d) feeding the alcoholic solvent obtained in (c) to step (a).

Abstract: Propylene oxide is formed by reaction of propylene with molecular oxygen in a high boiling solvent containing slurried solid catalyst, the light components are flashed and the remaining liquid containing slurried catalyst is recycled.

Abstract: Propylene oxide is formed in a two step reaction wherein in a first step oxygen and hydrogen are reacted in the absence of propylene to form hydrogen peroxide and in a second step propylene is reacted with the formed hydrogen peroxide to form propylene oxide, the same solid noble metal on TS-1 catalyst being used to catalyze the reaction in each step.

Abstract: The invention is directed towards a process for the epoxidation of olefins, using molecular oxygen and hydrogen, characterized in that, as catalyst, a compound comprising gold, preferably in nanometer size, on a support material, in which the support material is comprised of Scandium, Yttrium, Lanthanide, Zirconium, Hafnium, Vanadium, Niobium, Tantalum, Chromium, Molybdenum and/or Tungsten and is essentially free of titanium is applied, and a compound comprising gold, preferably in nanometer size, on a support material, in which the support material is comprised of Scandium, Yttrium, Lanthanide, Zirconium, Hafnium, Vanadium, Niobium, Tantalum, Chromium, Molybdenum and/or Tungsten and is essentially free of titanium, a process for the preparation of said compounds and a method of catalyzing a chemical reaction through conducting said chemical reaction in the presence of said compound.

Abstract: Described is a method of improving the process and operation of an existing system for manufacturing ethylene oxide. The ethylene oxide manufacturing system includes an epoxidation reactor system containing a volume of high activity epoxidation catalyst. The method includes replacing a portion of the volume of high activity epoxidation catalyst with a volume of high selectivity catalyst, and modifying the operation of the process system so as to provide for a feed to the epoxidation reactor system having a reduced carbon dioxide concentration.

Abstract: Propylene oxide is produced by liquid phase reaction of propylene oxygen and hydrogen in contact with a solid epoxidation catalyst at elevated temperature and pressure, the reaction conditions being regulated to provide a weight ratio of dissolved oxygen to dissolved hydrogen in the liquid reaction mixture of at least 16.

Abstract: The invention relates to a new method for producing epoxides by oxidizing olefins in a homogeneous gas phase reaction, wherein ozone and NO2 and/or NO are reacted with the desired olefin under mild reaction conditions and without a catalyst. The inventive method can be carried out as a continuous, one-step method in a reactor according to FIG. 1, and requires very little technical input. Monoolefins having 2 to 16 carbon atoms and diolefins having 4 to 16 carbon atoms can be epoxidized.

Abstract: An integrated process and apparatus for integrating an alkene derivative process, such as ethylene oxide process, with an ethylene process so that any ethylene entrapped in the purge stream of the alkene derivative process can be effectively recovered through the ethylene process portion of the integrated process.

Abstract: The invention discloses a dual-functional catalyst composition and an integrated process for production of olefin epoxides including propylene oxide by catalytic reaction of hydrogen peroxide from hydrogen and oxygen with olefin feeds such as propylene. The epoxides and hydrogen peroxide are preferably produced simultaneously in situ. The dual-functional catalyst comprises noble metal crystallites with dimensions on the nanometer scale (on the order of <1 nm to 10 nm), specially dispersed on titanium silicalite substrate particles. The dual functional catalyst catalyzes both the direct reaction of hydrogen and oxygen to generate hydrogen peroxide intermediate on the noble metal catalyst surface and the reaction of the hydrogen peroxide intermediate with the propylene feed to generate propylene oxide product.

Abstract: The present invention relates to a process for the catalytic partial oxidation of hydrocarbons. This process comprises passing a reaction mixture comprising hydrocarbons, oxygen, and at least one reducing agent, through a catalyst-containing layer to partially oxidize the hydrocarbon, and adsorbing the partially oxidized hydrocarbon in a downstream adsorbent-containing layer.

Abstract: The present invention relates to the preparation of epoxides by the oxidation of olefins using molecular oxygen with the addition of an aldehyde additive, characterized in that the oxidation is performed in compressed carbon dioxide as the solvent, which, as compared to many conventional organic solvents, is stable towards oxidation, reduces the danger of explosion and is toxicologically and ecologically safe.

Abstract: The present invention relates to a process for producing epoxides. This process comprises the oxidation of hydrocarbons in the presence of oxygen and at least one reducing agent and a catalyst, characterized in that the reaction mixture is passed through at least one catalyst-containing layer and through at least one adsorbent-containing layer, which adsorbs the epoxide. The catalyst-containing layers and the adsorbent-containing layers are arranged alternately one behind the other such that the reaction mixtures passes through a catalyst-containing layer, and an adsorbent-containing layer.

Abstract: The liquid-phase epoxidation reaction of an olefin with hydrogen and oxygen in the presence of a catalyst mixture containing a titanium zeolite and a supported catalyst surprisingly produces less ring-opened products such as glycols when performed in the presence of a buffer. This is particularly surprising because a typical palladium on titanium zeolite catalyst is little effected by the presence of a buffer. Surprisingly, the use of a buffer also typically improves the activity of the process.

Abstract: The invention is a liquid-phase process for epoxidizing an olefin with hydrogen and oxygen in the presence of a catalyst mixture comprising a titanium zeolite and a supported catalyst comprising palladium on niobium-containing support. The process is highly selective and productive for transforming olefins to epoxides in the liquid-phase reaction of an olefin, hydrogen, and oxygen.

Abstract: The invention is a liquid-phase process for epoxidizing an olefin with hydrogen and oxygen in the presence of a supported catalyst comprising palladium on niobium-containing support. The process exhibits good productivity and selectivity for olefin epoxidation with hydrogen, and oxygen. This is particularly surprising because typical palladium-containing epoxidation catalysts require the presence of a titanium zeolite.

Abstract: Epoxidation catalyst based on titanium zeolite in the form of extruded granules. Use of this catalyst in the synthesis of epoxides, preferably 1,2-epoxy-3-chloropropane or 1,2-epoxypropane, by reacting an olefinic compound, preferably allyl chloride or propylene, with a peroxide compound, preferably hydrogen peroxide. Process for the preparation of an epoxide, preferably 1,2-epoxy-3-chloropropane or 1,2-epoxypropane, by reacting an olefinic compound, preferably allyl chloride or propylene, with a peroxide compound, preferably hydrogen peroxide, in the presence of the aforementioned catalyst.

Abstract: The invention is a process for epoxidizing an olefin with hydrogen and oxygen in the presence of a catalyst comprising a noble metal and pretreated titanium zeolite. Titanium zeolite pretreatment comprises contacting the titanium zeolite with a leaching agent prior to use in epoxidation. Surprisingly, the process using the pretreated titanium zeolite shows decreased ring-opening to unwanted glycols and glycol ethers.

Abstract: The liquid-phase epoxidation reaction of an olefin with hydrogen and oxygen in the presence of a catalyst mixture comprising titanium zeolite and a supported catalyst surprisingly shows higher activity toward epoxide production when the supported palladium catalyst is pre-treated with bromide, or where the reaction is performed in the presence of an alkali or alkaline earth metal bromide compound.

Abstract: The invention is a process for epoxidizing an olefin with hydrogen and oxygen in the presence of a modifier and a catalyst comprising a noble metal and titanium zeolite. The modifier is (a) calcium carbonate in the presence of carbon dioxide or (b) ammonium bicarbonate. The process results in increased catalyst activity, selectivity to epoxide, and increased catalyst life.

Abstract: The invention is an olefin epoxidation process that comprises reacting olefin, oxygen, and hydrogen in a liquid medium in the presence of an epoxidation catalyst in a reactor system comprising a tank, a tube, a plurality of impellers, and means for inhibiting flow. The reactor system facilitates transfer of the hydrogen and oxygen to the liquid medium.

Abstract: A process for the direct oxidation of an olefin by oxygen to the corresponding olefin oxide in the presence of a reducing agent and a catalyst. The catalyst comprises a metal component, such as a transition metal oxide, dispersed on a metal ion-exchanged metallosilicates, such as a Group 1 or Group 2 ion-exchanged porous aluminosilicate. Selectivity to the olefin oxide is high and the catalyst is readily regenerated.

Abstract: In a process for oxidizing an organic compound containing at least one C—C double bond, or a mixture of two or more thereof, which comprises the step (II) below: (II) reaction of the organic compound or the mixture of two or more thereof with a medium comprising molecular oxygen in the presence of a heterogeneous catalyst, the medium further comprises carbon monoxide (CO).