1results about How to "Modulate activity" patented technology

The present application relates to the field of catalyst, especially to a kind of nickel-cerium dioxide hollow catalyst and its preparation and application.The metal active component of the catalyst is Ni, carrier is CeO2, with double-layer hollow structure, namely the outermost layer is CeO2, inner layer is Ni, the most inside is hollow structure, based on the total weight of catalyst, the content of metal Ni is 1-30wt.%, and can be adjusted by changing calcination temperature its catalytic performance.The catalyst uses cheap SiO2 as template, uses non-noble metal component, by constructing special morphology to adjust metal carrier interaction, greatly improves its carbon dioxide conversion rate on carbon dioxide methanation reaction in low temperature interval (<300 DEG C) And can maintain very high methane selectivity.Overcome the low carbon dioxide conversion rate of traditional non-noble metal catalyst in low temperature interval (<300 DEG C).The nickel-cerium dioxide hollow catalyst in the present application is low in cost, has high catalyst activity at low temperature and stable performance, and is easy to realize industrial application.