Steam reforming catalysts for lower hydrocarbons

Details Steam reforming catalysts for lower hydrocarbons Steam reforming catalysts for lower hydrocarbons

1997-05-01

1998-06-30

Lewis, Michael

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

502332, 502333, 502334, 502335, B01J 2104, B01J 2340, B01J 23755

Patent

active

057735891

ABSTRACT:
To provide an improved steam reforming catalyst for lower hydrocarbons which is highly active and has a high crushing strength. An improved steam reforming catalyst for lower hydrocarbons comprising a support constituted of CaO and Al.sub.2 O.sub.3 and an active component comprising nickel or a platinum-group metal. The content of CaO is 0.5 to 25 wt% based on the catalyst, and at least part of the CaO forms compounds with the A1.sub.2 O.sub.3. The support has a void fraction X of pores with a diameter of 0.5 .mu.m to 20 .mu.m of 0.08 or higher, a void fraction Y of pores with a diameter smaller than 0.5 .mu.m of 0.15 or higher, and a total void fraction Z of 0.23 to 0.8 (provided that Z.ltoreq.(X+Y)).

REFERENCES:
patent: 4285837 (1981-08-01), Sato et al.
patent: 4906603 (1990-03-01), Burgfels et al.
patent: 4990481 (1991-02-01), Sato et al.
Dependence of Mechanical Strength of Britle Polycrystalline Speciments on Porosity and Grain Size by F.P. Knudsen Journal of The American Ceramic Society, vol. 42, No. 8, pp. 376-387, Aug. 1958.

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