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《Journal of Fudan University(Natural Science)》 2015-04
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The Structural Changes of HZSM-5 Zeolites Treated by Hydrothermal Method and Their Effects on the Alkylation of Toluene with Methanol

TANG Jianyuan;ZHAO Chengwen;LI Yonggang;XING Haijun;LOU Baohua;NING Chunli;ZHANG Chunlei;Technology Research Institute of Shanghai Huayi Group;  
HZSM-5 molecular sieves under different hydrothermal pretreatment time modified with multicomponents were prepared by impregnation,and the change of acidity and pore structure of before and after pretreatment of the simple was studied by X-ray diffraction,scanning electron microscopy,N2 adsorption,27 Al MAS NMR and temperature-programmed desorption.Shape-Selective alkylation of toluene with methanol was investigated in a continuous flow fixed-bed reactor.Among them,the modified catalyst under hydrothermal pretreatment for 4hshows the best stability under the test conditions(reaction temperature is 440 ℃,space velocity(WHSV)is 5h-1,n(toluene)/n(methanol)=2).Its performance is significantly better than the catalyst without hydrothermal pretreatment.
【Fund】: 上海市博士后科研资助计划重点项目(B类)(13R21420100)
【CateGory Index】: O643.36;TQ241.13
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