Patent ID: 8038981
Filing Date: 2011-10-18
Classification: B01J,C01B,G01C,Y02P

Abstract:
1. A reactor for producing a hydrogen-containing gas comprising: a bed containing complex metal oxide-containing pellets and optionally containing steam-hydrocarbon reforming catalyst pellets wherein at least a portion of the complex metal oxide-containing pellets comprise at least one metal selected from the group consisting of Pt, Rh and Pd when the bed does not contain steam-hydrocarbon reforming catalyst pellets and wherein the complex metal oxide-containing pellets optionally comprise the at least one metal when the bed does contain steam-hydrocarbon reforming catalyst, and wherein the complex metal oxide-containing pellets comprise: 30 to 85 mole % of one or more binding agents selected from the group consisting of calcium titanate and calcium aluminate; and 15 to 70 mole % of one or more complex metal oxides wherein the one or more complex metal oxides are represented by the formula wherein A represents at least one metallic element having an oxidation state ranging from +1 to +3, inclusive, wherein the at least one metallic element is capable of forming a metal carbonate; x is a number from 1 to 10, inclusive; B represents at least one metallic element having an oxidation state ranging from +1 to +7, inclusive; y is a number form 1 to 10, inclusive; and n represents a value such that the complex metal oxide is rendered electrically neutral; wherein the complex metal oxide-containing pellets have a crush strength of 1 to 15 lbf/mm as determined in accordance with ASTM standard test method D 6175-03; wherein the complex metal oxide-containing pellets have a structure wherein the crush strength is retained within 1 to 15 lbf/mm after 50 cycles of reduction and oxidation in a process of producing hydrogen; wherein the calcium titanate, if present, is formed by reaction of at least one calcium precursor and TiO wherein the calcium aluminate, if present, is formed by reaction of at least one calcium precursor and at least one of alumina and aluminum hydroxide in a mixture with one or more complex metal carbonates associated with the one or more complex metal oxides.