论文部分内容阅读
用Ｌｉ＋部分替代ＭＴｉＯ３（Ｍ＝Ｃａ、Ｓｒ）催化剂中的Ｔｉ４＋，明显地提高了乙烷氧化脱氢（ＯＤＨＥ）反应中乙烯的选择性。在ＣａＴｉ０．９Ｌｉ０．１Ｏ３－δ催化剂上，反应温度为８５０℃时，乙烯选择性为７７．４％，乙烷转化率为８１．７％。Ｌｉ掺杂的作用是增加了催化剂的Ｐ型半导性和未充分还原的氧物种数目。
The partial replacement of Ti4 + in the catalyst of MTiO3 (M = Ca, Sr) with Li + significantly enhanced the selectivity of ethylene in the oxydehydrogenation (ODHE) reaction of ethane. On the CaTi0.9Li0.1O3-δ catalyst, the selectivity of ethylene was 77.4% and the conversion of ethane was 81.7% when the reaction temperature was 850 ℃. The role of Li doping is to increase the P-type semiconducting catalyst and the number of oxygen species not fully reduced.