In this work, co-feeding ethanol with methanol was adopted to prolong the lifetime of a catalyst in a methanol to propylene (MTP) reaction. The effect of an ethanol additive on the MTP reaction was further investigated over an MTP catalyst, pure catalysts of ZSM-5 and γ-Al₂O₃, and a mixed catalyst of ZSM-5 and γ-Al₂O₃, by using methanol and ethanol alone. The catalytic performance showed that with an increasing addition of ethanol, the lifetime of the commercial MTP catalyst was greatly improved, and the selectivity for ethylene correspondingly increased. The catalytic performances of methanol and ethanol on different catalysts showed that the reactivity of methanol and ethanol were in the following order: ethanol on ZSM-5 > ethanol on γ-Al₂O₃ > methanol on ZSM-5 > methanol on γ-Al₂O₃. Moreover, coke deposition on moderately strong and strong acid sites and pore blockage were responsible for catalyst deactivation.

在这项工作中，采用乙醇与甲醇共同进料来延长催化剂在甲醇制丙烯（MTP）反应中的寿命。对MTP反应的乙醇添加剂的效果进一步研究过的MTP催化剂，ZSM-5和纯催化剂的γ-Al ₂ ö ₃，和ZSM-5的混合催化剂和在γ-Al ₂ ö ₃，仅使用甲醇和乙醇即可。催化性能表明，随着乙醇添加量的增加，商品化MTP催化剂的寿命大大提高，对乙烯的选择性也相应提高。甲醇和对不同的催化剂乙醇的催化性能表明，甲醇和乙醇的反应是在按下列顺序：乙醇在ZSM-5>乙醇上的γ-Al ₂ ö ₃ >甲醇在ZSM-5>甲醇上的γ-Al ₂ O ₃。此外，焦炭在中等强度和强酸性位点上的沉积和孔堵塞是造成催化剂失活的原因。