Heteropolyacid(H3PW12O40) Supported MCM-41: An Effective Solid Acid Catalyst for the Dehydration of Glycerol to Acrolein
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2017年第6期
论文作者：丁建飞 MA Tianlin YUN Zhi 邵荣
文章页码：1511 - 1516
摘 要：The gas-phase dehydration of glycerol was conducted over HPW/MCM-41 catalysts,which were prepared by impregnation of different amount of H3PW12O40（HPW）on the MCM-41 support.The samples were characterized by XRD,N2 physisorption,FTIR,NH3-TPD,and pyridine-FTIR measurements.N2 physisorption results suggested that the uniform framework of MCM-41 could still be well maintained after modified with HPW.Pyridine-FTIR experiments indicate that HPW modified MCM-41 can generate rich Br?nsted acid sites.Moreover,Br?nsted acid sites facilitated to improve acrolein selectivity.Under the optimized reaction conditions:40wt%HPW loading,20%glycerol concentration,and 320℃reaction temperature,the glycerol conversion and acrolein selectivity reach 85%and 80%,respectively.
丁建飞1，MA Tianlin1,2，YUN Zhi2，邵荣1
1. Collaborative Innovation Center for Ecological Building Materials and Environmental Protection Equipments, Yancheng Institute of Technology2. College of Chemistry and Chemical Engineering, Nanjing Tech University
摘 要：The gas-phase dehydration of glycerol was conducted over HPW/MCM-41 catalysts,which were prepared by impregnation of different amount of H3PW12O40（HPW）on the MCM-41 support.The samples were characterized by XRD,N2 physisorption,FTIR,NH3-TPD,and pyridine-FTIR measurements.N2 physisorption results suggested that the uniform framework of MCM-41 could still be well maintained after modified with HPW.Pyridine-FTIR experiments indicate that HPW modified MCM-41 can generate rich Br?nsted acid sites.Moreover,Br?nsted acid sites facilitated to improve acrolein selectivity.Under the optimized reaction conditions:40wt%HPW loading,20%glycerol concentration,and 320℃reaction temperature,the glycerol conversion and acrolein selectivity reach 85%and 80%,respectively.
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