摘要:
A catalytic composition is disclosed, which exhibits an X-ray amorphous oxide with a spinel formula, and crystals of ZnO, CuO, and at least one Group VIB metal oxide, and preferably, at least one acidic oxide of B, P, or Si, as well. The composition is useful in oxidative processes for removing sulfur from gaseous hydrocarbons.
摘要:
A process is described for increasing the hydrogen content of a synthesis gas mixture comprising hydrogen, carbon oxides and steam, comprising the steps of: passing the synthesis gas mixture at an inlet temperature in the range 170-500 °C over a water-gas shift catalyst to form a hydrogen-enriched shifted gas mixture, wherein the water-gas shift catalyst is in the form of a cylindrical pellet having a length C and diameter D, wherein the surface of the cylindrical pellet has two or more flutes running along its length, said cylinder having no through-holes anddomed ends of lengths A and B such that (A+B+C)/D is in the range 0.25 to.25, and (A+B)/C is in the range 0.03to 0.30.
摘要:
Copper-containing, multimetallic catalysts with either a zirconia or carbon support are described which have improved utility for the hydrogenolysis of a glycerol or glycerol-containing feedstock to provide a biobased 1,2-propanediol product. Especially, improved carbon-supported examples of such catalysts are described for this reaction as well as for other processes wherein hydrogen is used, with methods for maintaining the activity of these catalysts. Related treatment methods in the preparation of these improved catalysts enable the use of carbons with a desired mechanical strength but which previously lacked activity, for example, for the conversion of a glycerol or glycerol-containing feed to produce 1,2-propanediol, so that copper-containing, multimetallic catalysts may be employed for making a biobased propylene glycol using carbon supports that previously would have not been suitable.
摘要:
Die Erfindung betrifft einen Entschwefelungskatalysator, umfassend eine Hydrierkomponente zum Hydrieren organischer schwefelhaltiger Verbindungen und eine Absorberkomponente zum Absorbieren von Schwefelwasserstoff sowie die Verwendung dieses Entschwefelungskatalysators für die Entschwefelung von Kohlenwasserstoff strömen, insbesondere Methanströmen. Eine geeignete Hydrierkomponente wird aus Kupfer und Molybdän gebildet, eine geeignete Absorberkomponente ist Zinkoxid.
摘要:
Use of cationic layered materials in hydrocarbon conversion, purification, and synthesis processes, such as fluid catalytic cracking. Cationic layered materials are especially suitable for the reduction of Sox and Nox emissions and the reduction of the sulfur and nitrogen content in fuels like gasoline and diesel. A new process is provided for the preparation of cationic layered materials, which process avoids the use of metal salts and does not require the formation of anionic clay as intermediate.