B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 23/40 (2006.01) B01J 35/02 (2006.01) B01J 35/06 (2006.01) C01B 21/26 (2006.01) C01C 3/02 (2006.01)
Patent
CA 2111197
2111197 9222499 PCTABS00018 This invention is a catalytic element for use in the catalytic oxidation of ammonia or ammonia and methane. The element comprises a foraminous structure fabricated from a material consisting essentially of a metal selected from the group consisting of platinum, rhodium, palladium and alloys of mixtures thereof characterized by (a) a novel configuration whereby the initial product of the formula: curve to flat ratio (C/F) multiplied by mesh count (N) and wire diameter (d), for said element is greater than at least about 0.08 and (b) where, for a given hydrogen throughput, the conversion efficiency is a function of the curve to flat ratio (C/F), wire diameter (d) and mesh count (N) combination and conversion efficiency is improved by increasing the mesh count (N) for a given wire diameter, increasing the wire diameter (d) for a given mesh count, and increasing the curve to flat ratio (C/F) to a ratio of above 1Ø The element can be in a series of said elements as a plurality of screens.
Heffernen Steven A.
Hochella William A.
Gowling Lafleur Henderson Llp
Johnson-Matthey Inc.
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