高通量技术研制开发甲醇制丙烯催化剂

High Throughput Research and Development of Catalysts for Converting Methanol into Propylene

采用高通量催化剂评价技术,筛选开发了具有高活性高选择性的甲醇制丙烯反应(MTP)催化剂.分别以商品和自制ZSM-5沸石为对象,详细研究了沸石硅铝比,晶粒大小对丙烯收率和选择性的影响,并对ZSM-5沸石进行了酸改性和孔道结构改性等优化处理,得到了性能优异的MTP催化剂.研究表明,复合改性后催化剂的甲醇转化率为100%,丙烯收率最高可以达到42%以上;在470℃,WHSV=2 h^(-1),甲醇浓度为60%时,催化剂寿命超过700 h.

The unique high-throughput technology and apparatus were applied to research and development of zeolite catalysts for conversion of methanol into propylene（MTP） with high activity and selectivity. The effects of Si/A1 ratio and crystal size of ZSM-5 zeolite on catalytic performance were studied. The acidity and diffusivity of the catalysts were optimized with different methods, including ion-exchange, oxide doping and alkali treatment. A propylene yield of≈42% and a lifetime of more than 700 h with 100% conversion of methanol are achieved with a 60% methanol/H20 feed at 470℃ and WHSV=2 h 1using Yashen MTP catalysts.