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Citation: 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-S_MFI and MCM-41 Aluminosilicates[J]. Acta Physico-Chimica Sinica, ;2005, 21(03): 324-327. doi: 10.3866/PKU.WHXB20050320 shu

Comparison on the Catalytic Cracking and Alkylation Activities between MSU-S_MFI and MCM-41 Aluminosilicates

1.
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

Received Date: 6 July 2004
Available Online: 15 March 2005

Mesoporous aluminosilicates MSU-S_MFI with well-ordered hexa nal 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-S_MFI 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-S_MFI 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-S_MFI are much higher than that of MCM-41.The catalytic cracking conversion of cumene on MSU-S_MFI is 31％ higher than that on MCM-41 with the same Si/Al ratio, and the butylation conversion of naphthalene over MSU-S_MFI is 15％ higher than that on the MCM-41 sample. Incorporation of MFI zeolitic nanoclusters into the mesostructured framework of MSU-S_MFI led to enhanced acidity.
- Mesoporous aluminosilicates; Catalytic cracking; Alkylation; Acidity
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Comparison on the Catalytic Cracking and Alkylation Activities between MSU-SMFI and MCM-41 Aluminosilicates

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通讯作者: 陈斌, bchen63@163.com

Comparison on the Catalytic Cracking and Alkylation Activities between MSU-S_MFI and MCM-41 Aluminosilicates