碱处理对高岭土微球上原位合成

ZSM-5分子筛的影响

INORGANICCHEMICALSINDUSTRY ›› 2016, Vol. 48 ›› Issue (7): 68-.

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Effect of alkali treatment on in-situ synthesis of ZSM-5 zeolite on calcined kaolin microspheres

Liu Minghui1，Wei Zhenhao1，Zhou Zhuo1，Zhu Xuedong1，2

1.Engineering Research Center of Large Scale Reactor Engineering and Technology，East China University of Science and Technology，Shanghai 200237，China；2.State Key Laboratory of Chemical Engineering，East China University of Science and Technology

Online:2016-07-10 Published:2016-07-25

Abstract

Abstract: ZSM-5 zeolite on alkaline-treated calcined kaolin microspheres（CKM） was in-situ synthesized by hydrothermal crystallization method.The effects of alkali treatment conditions on in-situ synthesis of ZSM-5 zeolite were investigated.The synthesized samples were characterized by XRD，FESEM，N2 adsorption-desorption，and NH3-TPD respectively.Results showed that alkali treatment conditions had significant impacts on the chemical compositions and morphologies of ZSM-5 zeolite.Small-sized ZSM-5 crystallites，with 0.8~1 μm in size and with 128 m2/g in specific surface area were optimally formed on CKM at 95 ℃ for 2 h using 7.4%（mass fraction） NaOH solution.The synthesized products had larger specific surface area，pore volume，and stronger acidity.

Key words: alkali treatment, calcined kaolin microspheres, in-situ synthesis, ZSM-5 zeolite

CLC Number:

TQ426.6

LIU Ming-Hui, WEI Zhen-Hao, ZHOU Zhuo, ZHU Xue-Dong. Effect of alkali treatment on in-situ synthesis of ZSM-5 zeolite on calcined kaolin microspheres[J]. INORGANICCHEMICALSINDUSTRY, 2016, 48(7): 68-.

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Effect of alkali treatment on in-situ synthesis of ZSM-5 zeolite on calcined kaolin microspheres

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