Abstract:

A review is presented on coupling of ethane dehydrogenation with reversed water-gas shift reaction for ethylene synthesis. Supported chromium oxide，nanostructured oxide and some zeolite catalysts exhibit excellent catalytic performance. The main function of CO₂ is to remove the produced H₂ by reversed water-gas shift reaction and to resist coke deposition during ethane dehydrogenation. The reaction mechanism is also discussed.

摘要：

综述了近年来国内外有关利用逆水煤气变换耦合乙烷脱氢制备乙烯反应的研究状况，讨论了该反应的历程和机理。文献表明，担载型铬氧化物、含铬分子筛、纳米氧化物粒子等具有较好的催化活性，CO₂的主要作用是通过逆水煤气变换来消除乙烷脱氢产物H₂，并与表面积炭反应提高乙烷转化率及催化剂稳定性。反应的关键是选择适宜的催化剂。