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1 results about "Temperature-programmed reduction" patented technology
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Temperature-programmed reduction (TPR) is a technique for the characterization of solid materials and is often used in the field of heterogeneous catalysis to find the most efficient reduction conditions, an oxidized catalyst precursor is submitted to a programmed temperature rise while a reducing gas mixture is flowed over it. It was developed by John Ward Jenkins whilst developing heterogeneous catalysts for Shell Oil company, but was never patented.
Reforming catalysts, methods of making and using the same, and methods of dry reforming of ethane and carbon dioxide
The present application provides a reforming catalyst, a preparation method and application thereof. The catalyst contains a carrier and a reforming active component supported on the carrier. The reforming active component elements include iron and a transition metal. The reduction peak temperature of the surface active metal in the hydrogen temperature programmed reduction test is less than or equal to the reduction peak temperature of a sample with a corresponding active component dispersion of 50%. And / or the active metal is dispersedly distributed on the surface of the carrier. The method comprises: contacting a solution containing a source of the reforming active component with a source of the carrier in equal volumes, the polarity of the solvent in the solution or the weighted polarity in terms of mole fraction is weak polarity, and then drying and calcining. The present application provides a method for dry reforming of ethane and carbon dioxide. The preparation method of the catalyst of the present application controls the polarity of the mixed solvent in the one-step equal-volume co-impregnation, so as to obtain a surface structure with controllable active component distribution. The preparation method of the catalyst of the present application is simple, has little influence on the environment, and is suitable for large-scale production.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1