Stabilized and doubly promoted platinum group metal catalysts fo

Details Stabilized and doubly promoted platinum group metal catalysts fo Stabilized and doubly promoted platinum group metal catalysts fo

1984-07-10

1986-05-27

Shine, W. J.

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

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

502304, 4232135, B01J 2104, B01J 2310, B01J 2358

Patent

active

045915806

ABSTRACT:
Alumina supported platinum-group metal catalysts exhibit exceptionally good performance and durability when the support is sequentially modified to include support stabilization by lanthana or lanthana-rich rare earth oxides, double promotion by ceria and alkali metal oxides, especially ceria along with lithia, and optionally nickel (oxide) as a base metal catalytic ingredient. For a pelleted Rh containing catalyst to exhibit such an outstanding performance at least part of the Rh component is added separately from any other Pt group metals.

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Schaper et al., "The Influence of Lanthanum Oxide on the Thermal Stability of Gamma Alumina Catalyst Supports", Applied Catalysis, 7 (1983), pp. 211-220.
Schaper et al., "The Influence of High Partial Steam Pressures on the Sintering of Lanthanum Oxide Doped Gamma Alumina", Applied Catalysis, 9 (1984), pp. 129-132.

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