Synthesis of Mesoporous Aluminosilicates with Enhanced Acidity from Zeolites MCM-56 and MCM-49

Chem. J. Chinese Universities

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Synthesis of Mesoporous Aluminosilicates with Enhanced Acidity from Zeolites MCM-56 and MCM-49

SONG Ke, GUAN Jing-Qi, WU Shu-Jie, XU Hai-Yan, KAN Qiu-Bin^*

College of Chemistry, Jilin University, Changchun 130021, China

Received:2008-05-12 Revised:1900-01-01 Online:2009-02-10 Published:2009-02-10
Contact: KAN Qiu-Bin

Abstract

Abstract: With zeolites MCM-56 and MCM-49 as the sources of silicon and aluminum treated with a sodium hydroxide solution, cetyltrimethylammonium bromide(CTAB) as template, mesoporous aluminosilicates with hexagonal structure denoted as MM-56 and MM-49 were synthesized. The structures of MM-56 and MM-49 were characterized via XRD, FTIR and N₂ adsorption-desorption techniques. The acidities of MM-56 and MM-49 were characterized via NH₃-TPD and IR spectroscopy of pyridine adsorption. Compared with conventional mesoporous aluminosilicates materials, MM-56 and MM-49 have enhanced acidity and show higher catalytic activity for the alkylation of phenol with tert-butanol.

Key words: MCM-56, MCM-49, Mesoporous, Enhanced acidity, Alkylation with tert-butanol

CLC Number:

O643.32+2

TrendMD:

SONG Ke, GUAN Jing-Qi, WU Shu-Jie, XU Hai-Yan, KAN Qiu-Bin^*. Synthesis of Mesoporous Aluminosilicates with Enhanced Acidity from Zeolites MCM-56 and MCM-49[J]. Chem. J. Chinese Universities, doi: .

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Synthesis of Mesoporous Aluminosilicates with Enhanced Acidity from Zeolites MCM-56 and MCM-49

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