丙烷/异丁烷脱氢铂系催化剂研究进展 Ⅰ.烷烃脱氢反应的热力学、动力学及反应机理

Progress in Pt-based catalysts for propane/isobutane dehydrogenation Ⅰ.Thermodynamics,kinetics and reaction mechanism

介绍了丙烷、异丁烷脱氢的反应机理和动力学,并对脱氢平衡转化率与温度、压力的关系,H2分压、空时对小分子烷烃在铂(Pt)系催化剂上脱氢的影响进行了综述。指出脱氢是一个高能耗的反应过程,提高单程转化率是降低脱氢能耗最有效的手段,单程转化率与操作条件和催化剂密切相关。

The reaction mechanism and kinetics of propane/isobutane dehydrogenation were introduced, the relations of dehydrogenation equilibrium conversion and temperature as well as pressure, the effect of H2 partial pressure and space -time on small molecu- lar alkane for dehydrogenation on Pt - based catalysts were summarized. It was pointed out that dehydrogen-ation was a high - energy - consumption reaction process,improving one -way conversion was the most efficient way to decrease energy consumption of dehy- drogenation, and one -way conversion was closely related with operation conditions and catalysts.