CO2-CH4 Reforming Based on Nickel-based Catalysts

Abstract

The current environmental problems are serious in nature. Due to greenhouse impact and a series of chain reactions caused by the massive emission of carbon dioxide (CO2) into the atmosphere, the ecological environment of the earth has been seriously damaged. The removal and reuse of CO2 is a current hot topic. The use of two greenhouse gases, CO2 and methane (CH4). And these two greenhouse gases can be used to produce different industrial products. However, the CO2-CH4 reforming reaction is difficult. The introduction of a catalyst in the reaction can avoid the problems of low conversion rate, long time and high energy consumption. At present, nickel-based catalysts are being greatly concerned in this reaction due to their low cost and high efficiency. Based on this background, this research focuses on four preparation methods for nickel-based catalysts, including deposition precipitation method, reflux impregnation method, solution combustion method and ammonia evaporation method. Three types of nickel-based catalysts, including single metal nickel-based catalysts, bi-metallic nickel-based catalysts, and multi-component nickel-based catalysts, are introduced about their activity performances in the CO2-CH4 reforming reaction. To sum up, the introduction of nickel-based catalysts can promote the directional regulation of reaction products, which can be carried out faster, saving energy and reducing consumption, which has very important research significance.