改性HZSM-5分子筛在甲醇制汽油中的研究进展  

Advances in modified HZSM-5 molecular sieve catalysts for methanol-to-gasoline reaction

作　　者：刘斌[1] 宋宝东[1] 曹刚 

机构地区：[1]天津大学化工学院化学工程研究所,天津300072 [2]天津南化催化剂有限公司,天津300071

出　　处：《化学工程》2014年第6期9-14,共6页Chemical Engineering(China)

基　　金：国家高技术研究发展计划(863计划;2012AA051003);天津市科技型中小企业技术创新基金

摘　　要：甲醇制汽油(MTG)在生物质、合成气和煤制取高辛烷值汽油中应用广泛。MTG工艺技术既可以解决甲醇产能过剩问题,又可以降低对石油的依赖程度。MTG工艺的核心是HZSM-5分子筛催化剂,提高HZSM-5分子筛催化剂的汽油选择性和催化寿命是MTG工艺过程中的关键。对传统的HZSM-5分子筛改性是提高其催化性能的有效方式。综述了负载过渡金属、制备多级介孔、合成纳米颗粒以及复合其他材料等改性方法制备的HZSM-5分子筛对MTG反应催化性能的研究进展。着重说明了这些改性方法对HZSM-5分子筛酸性、孔径和表面积等性质的影响,同时对改性后的HZSM-5分子筛的汽油选择性和催化寿命进行了比较。指出了各种改性方法的优缺点和对汽油品质的影响,并对今后的研究方向进行了展望。Methanol-to-gasoline （MTG）technology can not only solve the methanol overcapacity but also reduce the dependence on oil.The core of MTG technology is the HZSM-5 zeolites and the key point is to improve the gasoline selectivity and lifespan of HZSM-5 molecular sieve catalysts.The modification of traditional HZSM-5 zeolite is an effective way to improve its catalytic performance.The catalytic properties of modified HZSM-5 catalysts for MTG reaction were reviewed in terms of the modification methods including loading transition metals,forming multistage mesoporoes and nanoparticles as well as incorporating with other materials.The effects of these methods on properties such as acidity,surface area and aperture of HZSM-5 zeolites were mainly discussed.Besides,the gasoline selectivity and lifespan of modified HZSM-5 zeolites were compared respectively.The advantages and disadvantages of all these modification methods and their influence on gasoline quality were pointed out and the directions for further studies were prospected.

关 键 词：MTG HZSM-5 分子筛 改性 汽油选择性 催化剂寿命 

分 类 号：TE667[石油与天然气工程—油气加工工程]