The effect of Cs-, Ca- and P-containing promoters for binary Cr-Zr-O_x on propene selectivity and catalyst stability with time-on-stream in the non-oxidative propane dehydrogenation was elucidated. Large improvements in this catalytic performance were achieved when combining Cs and P promoters. They were suggested to partially block dehydrogenation sites resulting in the isolation of the latter. As a reason thereof, coke formation through propene oligomerization is inhibited in favor of propene desorption from the catalyst surface. The present catalysts achieved ~30% conversion of propane at WHSV (C₃H₈) of 5.89 h⁻¹ at 550 °C in comparison with 20% over K-CrO_x/Al₂O₃. The selectivity to propene was determined to be ~94%.

阐明了Cs-，Ca-和P-促进剂对于二元Cr-Zr-O _x的影响，以及在非氧化丙烷脱氢中随时间流逝而对丙烯选择性和催化剂稳定性的影响。当结合使用Cs和P助催化剂时，这种催化性能得到了很大的改善。建议它们部分阻断脱氢位点，导致后者的分离。因此，抑制了通过丙烯低聚的焦炭形成，有利于丙烯从催化剂表面脱附。本催化剂在550°C下在5.89 h ^-1的WHSV（C ₃ H ₈）下实现了丙烷的约30％的转化率，而K-CrO _x / Al ₂ O ₃则为20％。确定对丙烯的选择性为〜94％。