Effects of P content in a P/HZSM-5 catalyst on the conversion of ethanol to hydrocarbons

作     者：Jiangyin Lu Yancong Liu 

作者机构：Key Laboratory of Oil and Gas Fine Chemicals of Ministry of Education Xinjiang University Urumqi 830046 Xinjiang China 

出 版 物：《Journal of Natural Gas Chemistry》 (天然气化学杂志（英文版）)

年 卷 期：2011年第20卷第2期

页      面：162-166页

核心收录：

学科分类：081702[工学-化学工艺] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

基　　金：supported by the Doctor Fund of Science Research of Xinjiang University (Grant No. BS060101) the National Natural ScienceFoundation of China (Grant No. 20963010) 

主　　题：ethanol P/HZSM-5 hydrocarbons modification 

摘      要：A series of P/HZSM-5 catalysts prepared by impregnation method were used for ethanol conversion to lower olefins. The catalysts were characterized by X-ray diffraction （XRD）, NH3-temperature-programmed desorption （NH3-TPD） and N2 adsorption-desorption measurements. It was found that the P/HZSM-5 catalysts showed high activity and selectivity toward light olefins. The selectivities of propylene and butylene can be improved with the introduction of phosphorus （P）. When the content of P reached 3.0 wt%, more than 18.9% propylene in the gaseous products was obtained over the P/HZSM-5 catalyst at 450 ？C. The introduction of P modified the strong Br？nsted acid sites of the original HZSM-5 catalysts and P/HZSM-5 catalysts could resist coke formation and showed good stability.