Interlayer expansion of the layered zeolite precursor COK-5 with Sn(acac)_2Cl_2  

作　　者：Chaoqun Bian Qinming Wu Jian Zhang Shuxiang Pan Liang Wang Xiangju Meng Feng-Shou Xiao 

机构地区：[1]Department of Chemistry, Key Lab of Applied Chemistry of Zhejiang Province, Zhejiang University

出　　处：《Journal of Energy Chemistry》2015年第5期642-645,共4页能源化学（英文版）

基　　金：supported by the National Natural Science Foundation of China (21422306 and 21403192);Zhejiang Provincial Natural Science Foundation of China under grant no. LR15B030001;the Fundamental Research Funds for the Central Universities (2015XZZX004-04)

摘　　要：In the interlayer expansion of the layered zeolite precursor COK-5, a Sn, salt, bis（2,4-pentanedionate）- dichlorotin [Sn（acac）2CL2], instead of a silylating agent was used to link the layers at 180 ℃. The obtained material, which is designed as Sn-COE-5, shows a shift of the first XRD reflection, which is very similar to that of COK-5 interlayer expanded with dichlorodimethylsilane （DCDMS）, indicating an increase in interlayer distance. X-ray diffraction （XRD）, N2 sorption isotherms, inductively coupled plasma （ICP）, and X-ray photo- electron spectroscopy （XPS） support the incorporation of isolated Sn sites in the sample. In the conversion of glucose to levulinic acid. Sn-COE-5 exhibits much higher activity than COK-5, which is due to the presence of Lewis acidic sites in the Sn-COE-5.In the interlayer expansion of the layered zeolite precursor COK-5, a Sn, salt, bis（2,4-pentanedionate）- dichlorotin [Sn（acac）2CL2], instead of a silylating agent was used to link the layers at 180 ℃. The obtained material, which is designed as Sn-COE-5, shows a shift of the first XRD reflection, which is very similar to that of COK-5 interlayer expanded with dichlorodimethylsilane （DCDMS）, indicating an increase in interlayer distance. X-ray diffraction （XRD）, N2 sorption isotherms, inductively coupled plasma （ICP）, and X-ray photo- electron spectroscopy （XPS） support the incorporation of isolated Sn sites in the sample. In the conversion of glucose to levulinic acid. Sn-COE-5 exhibits much higher activity than COK-5, which is due to the presence of Lewis acidic sites in the Sn-COE-5.

关 键 词：Interlayer expansion COK-5 Isolated tin species Sn（acac）2Cl2 COE-5 

分 类 号：TQ426[化学工程]