Synthesis of MgO-Al_2O_3/ZSM-5 by Solid State Reaction for Propane Dehydrogenation  

作　　者：Zhou Shijian ZhouYuming Sheng Xiaoli ZhangYiwei Zhang Zewu Shi Junjun Kong Jie 

机构地区：[1]School of Chemistry and Chemical Engineering,Southeast University

出　　处：《China Petroleum Processing & Petrochemical Technology》2013年第3期50-56,共7页中国炼油与石油化工（英文版）

基　　金：the financial supports of the National Natural Science Foundation of China(Grant No.21376051,21106017,21306023 and 51077013);the Natural Science Foundation of Jiangsu(Grant No.BK20131288);the Fund Project for Transformation of Scientific and Technological Achievements of Jiangsu Province of China(Grant No.BA2011086);the Specialized Research Fund for the Doctoral Program of Higher Education of China(Grant No.20100092120047);the Key Program for the Scientific Research Guiding Fund of Basic Scientific Research Operation Expenditure of Southeast University(Grant No.3207043101);Instrumental Analysis Fund of Southeast University

摘　　要：Solid-state grinding is a simple and effective method to introduce guest species into the channels of microporous materials through filling.The structure and the surface acidity of the materials were obtained from BET isotherms and NH3-TPD,respectively.XRD,UV-vis,UV diffuse-reflectance,and TEM were used to characterize the phases,and the morphology,respectively.The clustered layers of MgO-Al2O3phases were formed in the internal pore surface and were highly dispersed inside the channels of the ZSM-5 host.So the volume of MgO-Al2O3/ZSM-5 composite was larger than the ZSM-5 zeolite itself and some mesoporous channels appeared when Mg/Al species entered the channels.Meanwhile,new acid sites emerged in MgO-Al2O3/ZSM-5 composite and the acid amount of the sample changed.The improved Pt dispersion and the increased acid content would cause the increase of propane conversion and the modification of selectivity during the reaction.Solid-state grinding is a simple and effective method to introduce guest species into the channels of microporous materials through filling.The structure and the surface acidity of the materials were obtained from BET isotherms and NH3-TPD, respectively.XRD, UV-vis, UV diffuse-reflectance, and TEM were used to characterize the phases, and the morphology, respectively.The clustered layers of MgO-Al2O3phases were formed in the internal pore surface and were highly dispersed inside the channels of the ZSM-5 host.So the volume of MgO-Al2O3/ZSM-5 composite was larger than the ZSM-5 zeolite itself and some mesoporous channels appeared when Mg/Al species entered the channels.Meanwhile, new acid sites emerged in MgO-Al2O3/ZSM-5 composite and the acid amount of the sample changed.The improved Pt dispersion and the increased acid content would cause the increase of propane conversion and the modification of selectivity during the reaction.

关 键 词：MGO-AL2O3 solid state reaction PTSN propane dehydrogenation 

分 类 号：O621.3[理学—有机化学]