Activation energy reducers for catalytic oxidation of gaseous mixtures

The present invention provides materials for improving the ignition of gaseous reactants in metal catalyzed oxidation reactions comprising a metal catalyst gauze, preferably, a platinum/rhodium catalyst gauze, having in contact therewith, from 0.5 to 1.5 wt.%, based on the weight of the metal catalyst gauze, of one or more pieces of previously used metal catalyst gauze. Further, methods of makingthe metal catalyst materials comprise shaping the pieces of previously used metal catalyst gauze and placing them equidistant from each other in contact with or on the surface of the metal catalyst gauze. And methods of using the materials comprise feeding into the reactor a gas mixture of oxygen or air and one or more reactant gases, and igniting the gas mixture at the surface of one or more or all of the pieces of previously used metal catalyst. 本发明提供用于改善金属催化氧化反应中气态反应物的点燃的材料，所述材料包含金属催化剂丝网(优选地，铂/铑催化剂丝网)，所述金属催化剂丝网具有与其接触的按所述金属催化剂丝网的重量计0.5至1.5wt.％的先前使用的金属催化剂丝网的一个或多个块件。进一步地，制作所述金属催化剂材料的方法包含使先前使用的金属催化剂丝网的所述块件成形，并将它们彼此等距地放