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ISSN 1000-6818CN 11-1892/O6CODEN WHXUEU
Acta Phys Chim Sin >> 2005,Vol.21>> Issue(03)>> 324-327     doi: 10.3866/PKU.WHXB20050320         中文摘要
Comparison on the Catalytic Cracking and Alkylation Activities between MSU-SMFI and MCM-41 Aluminosilicates
ZHENG Jun-Lin; ZHAI Shang-Ru; YANG Dong-Jiang; ZHANG Ye; WU Dong; SUN Yu-Han
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001; Graduate School of the Chinese Academy of Sciences, Beijing 100039
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Mesoporous aluminosilicates MSU-SMFI with well-ordered hexagonal symmetry were assembled from MFI zeolitic precursors containing abundant protozeolitic nanoclusters. Normal MCM-41 was synthesized by using tetraethyl orthosilicate (TEOS) and sodium aluminate as silica source and aluminum source,respectively. The pore diameter of MSU-SMFI sample and normal MCM-41 both are 2.70 nm, and their BET specific surface areas and pore volumes are comparable as seen from XRD and N2 sorption results. Although both MSU-SMFI and MCM-41 possess weak acidic sites and medium strong acidic sites in NH3-TPD profiles, the density of weak acidic sites and medium strong acidic sites in MSU-SMFI are much higher than that of MCM-41.The catalytic cracking conversion of cumene on MSU-SMFI is 31% higher than that on MCM-41 with the same Si/Al ratio, and the butylation conversion of naphthalene over MSU-SMFI is 15% higher than that on the MCM-41 sample. Incorporation of MFI zeolitic nanoclusters into the mesostructured framework of MSU-SMFI led to enhanced acidity.

Keywords: Mesoporous aluminosilicates   Catalytic cracking   Alkylation   Acidity  
Received: 2004-07-06 Accepted: 2004-09-25 Publication Date (Web): 2005-03-15
Corresponding Authors: SUN Yu-Han Email: yhsun@sxicc.ac.cn


Cite this article: ZHENG Jun-Lin; ZHAI Shang-Ru; YANG Dong-Jiang; ZHANG Ye; WU Dong; SUN Yu-Han. Comparison on the Catalytic Cracking and Alkylation Activities between MSU-SMFI and MCM-41 Aluminosilicates[J]. Acta Phys. -Chim. Sin., 2005,21 (03): 324-327.    doi: 10.3866/PKU.WHXB20050320
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