Abstract: A fluidized catalytic cracking process and apparatus with an active bed annular spent catalyst stripper is disclosed. An annular catalyst stripper disposed about a riser reactor is separated, by a baffle or fluid flow, into a secondary stripper nearer the catalyst regenerator and a primary stripper on the far side of the annular stripper from the regenerator. Catalyst flows through the primary stripper as a dense bed, to a transport means which lifts catalyst to the inlet of the secondary stripper. The "dead" region on side of annular strippers far from the regenerator is eliminated. Preferably catalyst is added to the primary stripper via cyclone diplegs, and a cyclone is used on the transport outlet.

Abstract: A method for regenerating a Group VIII noble metal catalyst which has been contaminated with coke during a reforming process. The method comprises (a) burning off the coke from the catalyst, redispersing the noble metal on the surface of the catalyst support by contacting the catalyst with halogen gas and carbon dioxide, and (c) chemically reducing the catalyst. The presence of carbon dioxide in the redispersing step improves the activity of the regenerated catalyst.

Abstract: Molybdenum/bismuth-based fluid-bed catalysts which are used for the ammoxidation of olefins can be reactivated by addition of a mixed oxide of formulaMo.sub.20 (P, Cr).sub.0.3-2.0 (Bi, Ni, Fe, Co).sub.1.33-4.0 O.sub.xwherein, besides Mo, one element from component group (P, Cr) and one or more metals from component group (Bi, Ni, Fe, Co) are present, andx results from the valency requirements,the mixed oxide being applied to SiO.sub.2 as support.

Abstract: A catalyst composition containing one or more binary oxides of palladium and rare earth metal such as Ce, La, Nd, Pr and/or Sm. The catalyst composition is used for the catalytic combustion of gaseous combustion mixtures of oxygen and carbonaceous fuels such as methane, e.g., a natural gas/air combustion mixture. Specific preferred binary oxides may be, for example, M.sub.2 O.sub.3.sup.. PdO (e.g., La.sub.2 O.sub.3.sup.. PdO) or 2M.sub.2 O.sub.3.sup.. PdO, wherein in each case M Is La, Nd or Sm. A process of combusting gaseous carbonaceous fuels includes contacting a catalyst as described above under combustion conditions, e.g., 925.degree. C. to 1650.degree. C. and 1 to 20 atmospheres pressure, to carry out sustained combustion of the combustion mixture, including catalytically supported thermal combustion. Regeneration of over-temperatured M.sub.2 O.sub.3.sup.. PdO catalyst is also provided for.

Abstract: A process for the production of an ether-rich additive for gasoline, and more particularly, the production of MTBE, TAME and mixtures thereof from light hydrocarbon streams comprising passing the light hydrocarbon stream, preferably from an FCC feedstock, through a superactivated porous particulate medium so as to remove nitrogen compounds, mercaptan and water prior to contacting the feedstock with a catalyst under etherification process conditions. The present invention further includes a process for regenerating the spent superactivated mediums used for purifying the feedstock employed in the process for the production of ether-rich additives for gasoline.

Abstract: A semi-continuous process for combusting coke from catalyst particles in a fixed bed is improved by rejecting from the combustion process a high moisture content flue gas stream which is produced by the combustion of a relatively large proportion of the hydrogen in the coke that enters the combustion section during an early stage of combustion. By operating the early stage of combustion at conditions to increase the rate of combustion of the hydrogen in the coke relative to that of the carbon in the coke, the overall equilibrium level of water in a flue gas/recycle gas that circulates through the process is lowered. The high moisture content flue gas stream from the early stage of combustion is rejected separately from the process.

Abstract: The supported amine-polyol sorbent of the present invention comprises about 1 wt % to about 25 wt % amine, about 1 wt % to about 25 wt % polyol, with the balance being support. This sorbent is capable of absorbing and desorbing carbon dioxide at relatively high rates at ambient temperatures, thereby improving carbon dioxide sorption capacity.

Abstract: A body made of carbon particles bonded together with bentonite clay and cellulose fibers, wherein in weight percent based on carbon, the bentonite content is about 4% to 20%, and the cellulose fiber content is about 2% to 10%. A method of making the body which involves forming an aqueous mixture having a composition in weight percent based on carbon of about 5% to 8% organic binder which can be cellulose ethers, cellulose ether derivatives, and combinations of these, about 4% to 20% bentonite clay, about 2% to 10% cellulose fibers, and the balance being activated carbon particles, forming the mixture into a body, and drying the body.

Abstract: A process for treating alumina mediums used for purifying a hydrocarbon feedstock employed in a process for the production of ether-rich additives for gasoline.

Abstract: A halogenated or sulfonated active carbon which has a high storage capacity for methane is provided from selected halogens in elemental form or solutions of such halogens or from solutions of sulfuric acid, fuming sulfuric acid, sulfur trioxide.

Abstract: In a preferred method, electrodes are formed with a catalyzed carbon substrate for use in an electrochemical cell. The catalyzed carbon substrate basically comprises carbon particles having internal and external surfaces defining a plethora of pores; and a pyrolyzed metal-doped copolymer material supported on the internal and external surfaces of the carbon particles. The pyrolyzed metal-doped material is a metal/nitrogen-carbon complex where the metal is complexed with the heterocarbon/nitrogen.Substrates of catalyzed carbon particles are prepared by first reacting an amine compound with formaldehyde and/or polymerized formaldehyde in solution, in the presence of a catalyst, carbon particles and a metal salt, at a temperature and at a rate of stirring sufficient to provide a polymerized product in the form of a gel. Then the gel is heated (pyrolyzed) in an inert atmosphere for a time sufficient to provide the catalytic carbon particles in the form of a powder.

Abstract: Adsorbent media are prepared by contacting support material with iron containing solutions, followed by drying to coat the support material with iron. Support materials such as sand and olivine are described. The adsorbent material can be used to remove metal contaminants and natural organic matter from water.

Abstract: A method of producing active carbon by microwave-induced pyrolysis of a carbonaceous material in an atmosphere wherein flame generation is prevented. The resulting product is treated with an acid to wash out sulphur or metal values and then activated with superheated steam and/or carbon dioxide at an elevated temperature.

Abstract: A phosphorus vanadium oxide catalyst for the oxidation of a C.sub.4 hydrocarbon. The catalyst comprises a shaped body having a volume, or a fixed bed comprising shaped bodies having an average volume, of at least about 0.02 cc, and contains a promoter selected from among Bi, Sb, Ge, Ti, Zr, La, Ce, Ni, Zn, U, Sn, Si or mixtures thereof. The promoter is present in a proportion that enables the catalyst to have a developed surface area of at least about 28 m.sup.2 /g, and to exhibit a weight/area productivity of at least about 3.5 mg maleic anhydride/m.sup.2 -hr and/or a weight/weight productivity of at least about 100 g maleic anhydride/kg.cat.-hr. when contacted with a gas containing 2.4% by volume n-butane in air, at a gas flow volume to catalyst weight ratio of 2180 cc/g-min., under a pressure of 1.055.times.10.sup.2 -kPa-G, and at a temperature sufficient to maintain a hydrocarbon conversion of 85 mole percent. Methods for the preparation of the catalyst include activation by ANST.

Abstract: In the process for recovery of Group VIII noble metal carbonylation catalyst from a process stream which also contains tar produced during a carbonylation process for carboxylic acid anhydride production, the process stream is diluted with alkyl halide and then extracted with a water, carboxylic acid, iodide salt alkyl halide solution, the iodide salt being a co-promoter derived from the carbonylation process. The recovered noble metal may be recycled to the carbonylation process with iodide salt co-promoter.

Abstract: Diffusion coatings incorporating approximately 18 to 35 wt % Cr and 1 to 3% Si in 2.25Cr-1.0Mo steel and 1018 steel have been produced using a pack cementation method. The codeposition of these concentrations of Cr and Si into the 2.25Cr-1.0Mo and 1018 steel requires the use of a "mixed activator" (fused salt solution of NaF and NaCl). Cyclic oxidation tests in air at 700.degree. C. of a coated 2.25Cr-1.0Mo steel coupon with a surface concentration of 34Cr-3Si have shown excellent cyclic oxidation resistance. Furthermore, a 1018 coupon coated to a surface concentration of Fe-30 wt % Cr-3Si shows negligible aqueous corrosion in an aerated 3.5% NaCl solution at room temperature. These coatings have provided similar protection in more complex oxidizing and reducing atmospheres.

Abstract: An alkylation process which utilizes a solid alkylation catalyst is disclosed. The catalyst, which has carbonaceous material adsorbed thereto, is regenerated by reacting the adsorbed carbonaceous material. The reaction step is accomplished by heating the catalyst in the presence of ozone to form an ozonated hydrocarbon, wherein the ozonated hydrocarbon includes carbonyl carbons. The ozonated hydrocarbon is removed by desorbing the carbonyl carbons from the solid alkylation catalyst. The carbonaceous material is preferably reacted at a temperature ranging from about 20.degree. C. to 200.degree. C. The ozone is preferably in a gaseous stream at a concentration ranging from about 1 to 50 volume percent. The carbonyl components are preferably desorbed from the heated alkylation catalyst by sweeping the catalyst with a desorption fluid.

Abstract: A process for regeneration of spent sulfated and calcined solid superacid catalyst is disclosed. Said process comprises heating said catalyst to a temperature of approximately 450.degree. C. and contacting said catalyst with a gas stream comprising oxygen or air and sulfur dioxide. This regeneration process can be performed in situ.

Abstract: A solid combination of elemental sulfur and an inorganic support material (preferably alumina), is contacted with at least one liquid C.sub.5 -C.sub.12 alkane and/or cycloalkane, followed by substantially removing the C.sub.5 -C.sub.12 hydrocarbon from the thus-contacted solid combination of elemental sulfur and inorganic support. This process improves the trialkyl arsine absorption capacity of the solid combination.

Abstract: A dehydrogenating catalyst for saturated hydrocarbons comprising platinum, tin, sodium and .tau.-alumina. The support of the catalyst is a large pore diameter .tau.-Al.sub.2 O.sub.3 with dual pore diameter distribution. At least 40% of the total pore volume is contributed by pores with pore diameter in the range of 1000-10000 .ANG.. Platinum, tin, and sodium are impregnated onto support by co-impregnation method, followed by drying, calcinating, and steam-treating, as well as reducing by hydrogen, to prepare a long life dehydrogenating catalyst.