We elucidated the effects of H₂ and the kind (Cu or Ru) of supported metal on product selectivity and on-stream stability of MZrO_x-based catalysts (M = La or Y) in the non-oxidative dehydrogenation of propane to propene. Coke formation was hindered in hydrogen presence. However, the selectivity to C₁-C₂ hydrocarbons increased over Ru/MZrO_x but did not change over Cu/LaZrO_x. This difference was related to the low activity of Cu for cracking and hydrogenolysis reactions. Using feed with 40 vol% C₃H₈ and 30 vol% H₂ in N₂, Cu/LaZrO_x showed stable conversion (20%) and propene selectivity (88%) within 4.5 h on stream at 550 °C.

我们阐明了H ₂和负载金属的种类（Cu或Ru）对丙烷非氧化脱氢成丙烯时基于MZrO _x的催化剂（M = La或Y）的产物选择性和物流稳定性的影响。在氢气存在下阻止了焦炭的形成。然而，对C ₁ -C ₂烃的选择性在Ru / MZrO _x之上增加，但在Cu / LaZrO _x之上没有改变。这种差异与铜对裂解和氢解反应的低活性有关。使用在N _2中含有40％（体积）的C ₃ H ₈和30％（体积）的H _2的进料，Cu / LaZrO _x 在550°C下运行4.5小时内显示出稳定的转化率（20％）和丙烯选择性（88％）。