Abstract: A new composition of matter comprises nickel phosphate and titanium phosphate, preferably prepared by coprecipitation. A process for removing metals from a hydrocarbon-containing feed stream, in particular a heavy oil, comprises hydrotreatment in the presence of a solid catalyst composition comprising nickel phosphate and titanium phosphate (preferably coprecipitated).

Abstract: Heat-damaged ZSM-5 type catalysts are reclaimed by hydrothermal treatment with an aqueous medium followed by base exchange with an ammonium salt.

Abstract: A method for reactivating noble metal-containing zeolites containing sulfur oxide poisoned noble metal such as oxygen regenerated platinum zeolite beta catalysts, by contacting the catalyst with an acidic aqueous solution having a pH below about 7. The solution contains a Bronsted acid compound having a dissociation constant ranging from about 1.times.10.sup.-14 to about 2.times.10.sup.-1.

Abstract: This invention pertains to a new process for removing metals, especially contaminant metals, from spent catalysts. Also, this invention pertains to a catalyst composite with metals removed by the new process, and to several uses for the catalyst, including as a rejuvenated hydrotreating catalyst. The new process comprises (i) contacting the spent catalyst with a complexing agent with four or more coordinating groups, including at least two carboxylic acid type groups and at least one amino type group, and (ii) separating from the spent catalyst a mixture containing the complexing agent and the removed metals. By this process contaminant metals, like vanadium, are more selectively removed from the spent catalyst than are catalytic metals, like cobalt and molybdenum.

Abstract: An air cleaning material for use in air filters comprises a porous substrate which contains zinc oxide with a metal salt. The salt advantageously comprises a metal chloride. The porous substrate advantageously comprises activated carbon or a silica gel, molecular sieves or activated alumina may serve as the substrate.

Abstract: A method for restoring the catalytic activity of solid particles using an improved apparatus for separating solid particles from vapor is disclosed. The apparatus includes a novel inlet system, a novel particle outlet system and a chamber having novel dimensional relationships which result in an apparatus that separates solid particles from vapor with less attrition, or "break-up" of particulate matter, while maintaining a high separation efficiency at high loading conditions, e.g., the apparatus maintains a tangential wall velocity of less than about 50 feet per second and separates, from a mixture of solid particles and vapor, more than about 95% of the solid particles that are larger than about 20 microns in diameter while processing more than about 200 cubic feet of the mixture per second.

Abstract: A pitch having optical anisotropy for use in production of carbon fibers, wherein the pitch is prepared using a compound represented by the formula (I) as a raw starting material and subjecting the compound to thermal modification and then removing light fractions ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.6, R.sub.7, R.sub.8, R.sub.9 and R.sub.10 each represents a hydrogen atom or a methyl group or an ethyl group; R.sub.5 represents a hydrogen atom or a methyl group; the total number of carbon atoms of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is from 2 to 4 and the total number of carbon atoms of R.sub.6, R.sub.7, R.sub.8 and R.sub.9 is from 2 to 4; and m is at least 3. The pitch is substantially homogeneous in quality, has a low softening point and has excellent molecular orientation.

Abstract: This invention relates to a finely divided iron carbide-based catalyst which is produced by a gas phase pyrolytic decomposition reaction driven by a laser. The catalysts may be used to produce various hydrocarbons, including olefins, from CO and H.sub.2.

Abstract: A process for preparing primarily gamma-butyrolactone comprises the step of contacting under suitable reaction conditions a succinic anhydride containing feed stream and hydrogen, in the presence of a catalyst composition comprising (a) substantially metallic nickel, (b) at least one oxide selected from oxides of cerium and zirconium, and (c) a silica-containing support. In another embodiment, the above described catalyst composition is provided.

Abstract: The formation of carbon on metals exposed to hydrocarbons in a thermal cracking process is reduced by contacting such metals with an antifoulant selected from the group consisting of a combination of gallium and tin and a combination of gallium and antimony.

Abstract: A self-supporting structure comprising an inorganic sorbent and method for preparing is described in which the self-supporting structure is substantially free of sorbent fines and the sorption characteristics of the sorbent particles is retained. The process for immobilizing the sorbent particles in the self-supporting structure comprises the steps of:(a) preheating inorganic sorbent particles to an elevated temperature;(b) mixing the sorbent particles with particles of a polymeric binding material to form a mixture comprising the particles of polymeric binding material adhered to the sorbent particles; and(c) heating the mixture to about the solid-liquid transition temperature of the polymeric binding material with or without pressure to form a structure which upon cooling is self supporting.

Abstract: The process of regenerating a soluble, stable molybdenum-containing catalyst suitable for epoxidation of olefins with a hydroperoxide which comprises thermally precipitating and separating a molybdenum-containing solid obtained from a spent catalyst stream derived from a molybdenum catalyzed epoxidation of an olefin and solubilizing the precipitated solid by contacting with a liquid composition comprising an admixture of a monohydroxy alcohol, a polyhydroxy alcohol and an organic peroxide or hydroperoxide, said polyhydroxy alcohol being present in an amount of at least about 2 moles per mole or molybdenum to be solubilized.

Abstract: Catalyst supports, catalysts, method for the preparation thereof, and dimerization processes therewith are provided. Catalyst supports consist essentially of alkaline earth aluminate-containing potassium carbonate with at least one carbonaceous compound and having a crush strength of at least 5 pounds. Catalysts consist essentially of at least one elemental alkali metal deposited on the novel catalyst supports. Optionally, the catalysts further contain at least one promoter selected from the group consisting of elemental copper, elemental cobalt, and finely divided stainless steel.

Abstract: Described is a process for removing arsenic, vanadium, and/or nickel from petroliferous derived liquids by contacting said liquid at an elevated temperature with a divinylbenzene-crosslinked polystyrene having catechol ligands anchored thereon. For vanadium and nickel removal an amine, preferably a diamine is included.Also, described is a process for regenerating spent catecholated polystyrene by removal of the arsenic, vanadium, and/or nickel bound to it from contacting petroliferous liquid as described above and involves:treating the spent polymer containing any vanadium and/or nickel with an aqueous acid to achieve an acid pH; and,separating the solids from the liquid; and thentreating said spent catecholated polystyrene, at a temperature in the range of about 20.degree. to 100.degree. C. with an aqueous solution of at least one carbonate and/or bicarbonate of ammonium, alkali and alkaline earth metals, said solution having a pH between about 8 and 10; and,separating the solids and liquids from each other.

Abstract: Heavy residues produced by noble metal catalyzed carbonylation reactions and containing Group VIII noble metals, particularly rhodium, are treated with reagents to precipitate solids containing substantially all of the noble metal contained in the residues. The solids may be further treated to concentrate the noble metals or they may be returned directly for reuse in the carbonylation reaction. Suitable reagents include aliphatic alcohols, carboxylic acids, and carboxylic acid esters. Preferred are branched-chain alcohols, especially tertiary alcohols; of the acids, acetic acid is particularly preferred; and of the esters, n-butyl acetate and ethylidene diacetate are preferred. Subsequent treatments with other solvents, e.g., alkanes, cycloalkanes, ethers, and aromatic compounds, may be used to further concentrate the rhodium content of the precipitated solids.

Abstract: Noble metal catalyst, in particular platinum catalysts, which are applied on carriers and have become poisoned by metals as a result of being used for many years in the preparation of hydroxyl-ammonium salts by catalytic reduction of nitric oxide with hydrogen in an aqueous mineral acid are regenerated by a process in which the metallic impurities are dissolved using nitric acid or aqua regia, the solution is neutralized, the troublesome metals are precipitated from the neutralized solution by means of a selective precipitating reagent, and the purified platinum solution is reused for the preparation of the catalyst. Organic complexing agents which form insoluble or sparingly soluble complexes with the metallic impurities are preferably used as precipitating reagents.

Abstract: This invention relates to a promoted finely divided or supported iron carbide-based catalyst which is produced by a gas phase pyrolytic decomposition reaction driven by a laser and the use of such a catalyst to produce various heavier hydrocarbons from CO and H.sub.2.

Abstract: Catalyst composition comprising chemically bound copper, phosphorus and oxygen used for oligomerizing olefins to C.sub.5 -C.sub.12 hydrocarbons. The preferred catalyst composition comprises a mixture of copper(II) orthophosphate, zirconium orthophosphate and aluminum orthophosphate, preferably formed by coprecipitation.

Abstract: A process is described for rejuvenation of a deactivated highly siliceous noble metal-containing zeolite catalyst having a framework silica to alumina ratio of at least about 20 which contains agglomerated noble metal in its deactivated state. The process comprises redispersing the noble metals associated with the deactivated catalyst by contacting the catalyst with a stream of inert gas containing molecular chlorine, water and optionally, oxygen, a temperatures ranging from about 150.degree. to about 450.degree. C., a partial pressure of chlorine of from about 6 to about 15 Torr and a ratio of partial pressure of water to partial pressure of chlorine of from about 0.01 to about 2 for a period of time sufficient to achieve redispersion; purging said catalyst with an inert gas; and reducing said purged catalyst in a stream of hydrogen at a temperature ranging from about 140.degree. C. to 550.degree. C.

Abstract: A catalyst for an electrolyzer of basic solutions. An electrode catalyst for an electrolyzer of basic solutions, the catalyst consisting of a compound based on a mixed oxide of molybdenum and of nickel, characterized by the fact that the said compound is of the form (Ni.sub.1-x Cd.sub.x)MoO.sub.4, where 0.02.ltoreq.x.ltoreq.0.06.