Dehydrogenation processes using catalysts comprising catalytic m

Details Dehydrogenation processes using catalysts comprising catalytic m Dehydrogenation processes using catalysts comprising catalytic m

1994-09-30

1996-02-06

Pal, Asok

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

By dehydrogenation

585444, 502222, 502 66, 502 74, 502221, 502259, 502216, C07C 5333, B01J 27043

Patent

active

054897220

ABSTRACT:
Organic compounds are dehydrogenated by contact with a catalyst prepared by oxidizing and then sulfiding a composition comprising Group VIIIA (first or second row) catalytic metal on a nonacidic porous support, for example alumina, to produce compositions which have good dispersion of a catalytically active metal component and of sulfide species over the surface of the compositions and high activity as catalysts for the dehydrogenation of organic compounds. In one embodiment of the invention the catalyst used in the process of the invention has ratios of nickel, and/or sulfide species to peak areas of aluminum in the support, as determined by X-ray photoelectron spectroscopy (XPS), which improve their activity and stability for use as dehydrogenation catalysts. The catalyst may also have ratios of cesium, added to reduce acidity, to aluminum peak areas, as determined by XPS, which have advantages for use as dehydrogenation catalysts in respect of activity, resistance to deactivation and avoidance of side reactions.

REFERENCES:
patent: 4517306 (1985-05-01), Buss
patent: 4727216 (1988-02-01), Miller
Rennard et al, J. Catalysis, The Role of Sulfur in Deactivation of Pt/MgAl.sub.2 O.sub.4 for Propane Dehydrogenation, 96, 235-244 (1986).
Rostrup-Nielsen et al, Catalysis 1987, Ensemble Control By Sulfur Poisoning of Nickel Catalysts For Steam Reforming, 725-732, Elsevier Science Publishers B.V., Amsterdam (1988).
Rostrup-Nielsen, J. Catalysis, Sulfur-Passivated Nickel Catalysts for Carbon-Free Steam Reforming of Methane, 85, 31-43, (1984).
Rostrup-Nielsen et al., Applied Catalysis 1, High Temperature Hydrogen Sulfide Chemisorption On Nickel Catalysts, 303-314, Elsevier Scientific Publishing Company, Amsterdam (1981).
Rostrup-Nielsen et al., J. Catalysis, Sulfur Poisoning of Boudouard and Methanation Reactions on Nickel Catalysts, 39, 395-404, (1979).
Rostrup-Nielsen, J. Catalysis, Equilibria of Decomposition Reactions of Carbon Monoxide and Methane over Nickel Catalysts, 27, 343-356, (1972).
Bartholomew et al., J. Catalysis, Chemistry of Nickel-Alumina Catalysts, 45, 41-53, (1976).
LePage et al., Applied Heterogeneous Catalysis, 5, 110, Gulf Publishing Company (1987).
Mangnus et al., J. Catalysis, Companion of the Sulfiding Rate and Mechanism of Supported NiO and Ni.sup.o Particles, 137, 92-101, (1992).
Scheffer et al., J. Catalysis, A Temperature-Programmed Sulfiding Study of NiO-WO.sub.3 /Al.sub.2 O.sub.3 Catalysts, 121, 18-30 (1990).
Swift et al., Ind. Eng. Chem., Prod. Res. Dev., Elimination of Excessive Carbon Formation during Catalytic Butene Dehydrogenation, 15, 131-136, (1976).
Stytsenko et al., Kinetics and Catalysis, Production of Active Surface of a Nickel-Tin Catalyst for Dehydrogenation of Hydrocarbons, Plenum Publishing Corporation, 802-807 (1988).
Agnelli et al., Catalysis Today, Surface Organometallic Chemistry on Metals Preparation of New Selective Bimetallic Catalysts by Reaction of Tetra-n-Butyl Tin with Silica Supported Rh, Ru and Ni, 6, 63-72, (1989).

Affiliated with

Also associated with

Rating

Dehydrogenation processes using catalysts comprising catalytic m does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dehydrogenation processes using catalysts comprising catalytic m, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dehydrogenation processes using catalysts comprising catalytic m will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2176252