Selective Dealumination of ZSM-5 by Hydrothermal Treatment

Kui ZHANG Huai Bin ZHANG Shou He XIANG Shang Yuan LIU He Xuan LI Fei HE

引用本文: Kui ZHANG,  Huai Bin ZHANG,  Shou He XIANG,  Shang Yuan LIU,  He Xuan LI,  Fei HE. Selective Dealumination of ZSM-5 by Hydrothermal Treatment[J]. Chinese Chemical Letters, 1998, 9(4): 397-400. shu
Citation:  Kui ZHANG,  Huai Bin ZHANG,  Shou He XIANG,  Shang Yuan LIU,  He Xuan LI,  Fei HE. Selective Dealumination of ZSM-5 by Hydrothermal Treatment[J]. Chinese Chemical Letters, 1998, 9(4): 397-400. shu

Selective Dealumination of ZSM-5 by Hydrothermal Treatment

  • 基金项目:

    This work was supported by the key project of the National Natural Science Foundation of China, Grant No. 29133071

摘要: We studied the factors affecting the framework aluminium distribution in the ZSM-5 structure by hydrothermal treatment under different conditions. 27A1MASNMR, XPS and chemical analysis revealed that with steaming at lower water vapor pressure, the framework aluminium located at the external surface is less stable. Steaming at higher water vapor pressure is beneficial in removing the framework A1 in HZSM-5, and especially helpful in removing that located at the internal surface of HZSM-5. By changing steaming conditions, one may control the framework aluminium distribution in the HZSM-5 structure.

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  • 收稿日期:  1997-08-15
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