CATALYST FOR REMOVING HYDROGEN FROM GAS MIXTURE

摘要

For the elimination of hydrogen from a gas mixture containing hydrogen and oxygen, a catalyst consisting of a system of metal layers is described, whose surface layer (3) facing the gas mixture consists of a PdNiCu alloy. The surface layer is joined to a support (1) of thermally conductive material. To maintain the catalytic action of the surface layer even in the presence of CO and aggressive gas components in the gas mixture, an interlayer (2) of V, Nb, Ta, Ti or Zr is applied between the surface layer and the support. A material having a high thermal conductivity and heat capacity as well as a high coefficient of thermal expansion is used for the support. ……