碱处理对高岭土微球上原位合成

ZSM-5分子筛的影响

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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Inorganic Acid-Base-Salt Committee of CIESC

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

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