Sulfur-tolerant catalyst systems

Details Sulfur-tolerant catalyst systems Sulfur-tolerant catalyst systems

2011-02-01

2011-02-01

Vanoy, Timothy C (Department: 1793)

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

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

C502S304000, C502S315000, C429S047000, C429S523000, C429S502000

Reexamination Certificate

active

07879754

ABSTRACT:
Methods for improving the sulfur-tolerance of nickel-based catalyst systems, as well as the improved catalyst systems, are disclosed. The methods can include adding praseodymium alone, or in combination with ruthenium and/or cerium, to a nickel-based catalyst system, thereby inhibiting sulfur poisoning of the catalyst system. Improved catalyst systems can have an added amount of praseodymium alone, or in combination with ruthenium and/or cerium, sufficient to inhibit poisoning of the system by sulfur.

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