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研究了FeCoMnK/BeO新型多组分催化剂上二氧化碳加氢的反应性能,考察了反应温度、空速及原料气组成对反应性能的影响. 结果表明,二氧化碳的转化率及烯烃/ 烷烃比值均高于氧化铝、硅胶或活性炭担载的催化剂.在647 K,3 000 h-1 ,CO2/H2 体积比为1/3 的条件下,低碳烯烃的收率最高. 利用原位FTIR 技术研究了该催化剂上二氧化碳加氢反应的程序升温过程,提出了可能的反应机理.
The reaction performance of FeCoMnK / BeO novel multicomponent catalysts for hydrogenation of carbon dioxide was investigated. The effects of reaction temperature, space velocity and feed gas composition on the reaction performance were investigated. The results showed that the conversion of carbon dioxide and olefin / alkane ratio were higher than that of alumina, silica gel or activated carbon supported catalyst. At 647 K, 3 000 h-1, CO2 / H2 volume ratio of 1/3 under the conditions, the highest yield of light olefins. The in-situ FT-IR technique was used to study the temperature-programmed process of hydrogenation of carbon dioxide over this catalyst. A possible reaction mechanism was proposed.