| FINE CONTROL OF HZSM-5’S PORE-OPENING SIZE BY A NEW CVD METHOD |
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| 引用本文： | 董飞,王桂茹,王祥生.FINE CONTROL OF HZSM-5’S PORE-OPENING SIZE BY A NEW CVD METHOD[J].中国化学工程学报,1995,3(4):208-214. |
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| 作者姓名： | 董飞 王桂茹 王祥生 |
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| 作者单位： | Dong Fei Wang Guiru
Wang Xiangsheng
School of chemical engineering，Dalian University of Technology，Dalian 116012，China |
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| 摘 要： | A new CVD method without vacuum condition(CVDWV)was designed in this study,ithad been found that by modifying the flow rate of the carrier gas(N_2)and the temperature of sur-face reaction,silicon saturator and sample tube,the amount of silica deposited on the external sur-face of the zeolite could be precisely controlled,The changes in the physicochemical properties ofzeolite,such as pore-opening size,acidity and reaction property were investigated.The results ob-tained showed that:modification of the improved CVD method did not change the internal structureand acidity of the zeolite,but could bring about significant change of pore-opening size and reactionproperty as desired.
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| 关 键 词： | HZSM-5 CVD zeolite pore-opening size silica adsorption external surface deposit |
| 收稿时间： | 1993-9-27 |
| 修稿时间： | 1994-4-5
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FINE CONTROL OF HZSM-5 S PORE-OPENING SIZE BY A NEW CVD METHOD |
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| TONG Fei,WANG Guiru,WANG Xiangsheng.FINE CONTROL OF HZSM-5 S PORE-OPENING SIZE BY A NEW CVD METHOD[J].Chinese Journal of Chemical Engineering,1995,3(4):208-214. |
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| Authors: | TONG Fei WANG Guiru WANG Xiangsheng |
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| Affiliation: | School of chemical engineering, Dalian University of Technology, Dalian 116012, China |
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| Abstract: | A new CVD method without vacuum condition (CVDWV) was designed in this study, it had been found that by modifying the flow rate of the carrier gas (N2) and the temperature of surface reaction, silicon saturator and sample tube, the amount of silica deposited on the external surface of the zeolite could be precisely controlled, The changes in the physicochemical properties of zeolite, such as pore-opening size, acidity and reaction property were investigated. The results obtained showed that: modification of the improved CVD method did not change the internal structure and acidity of the zeolite, but could bring about significant change of pore-opening size and reaction property as desired. |
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| Keywords: | HZSM-5 CVD zeolite pore-opening size silica adsorption external surface deposit |
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