Synthesis and Characterization of H-form Aluminosilicate MCM-41 in a Novel Alkali-metal Free Media

Chem. J. Chinese Universities ›› 1999, Vol. 20 ›› Issue (10): 1495.

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Synthesis and Characterization of H-form Aluminosilicate MCM-41 in a Novel Alkali-metal Free Media

LIN Wen-Yong¹, PANG Wen-Qin¹, WEI Chang-Ping², LI Dong-Mei³, ZHEN Kai-Ji²

1. The Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Chang chun 130023;
2. China Department of Chemistry, Jilin University, Chang chun 130023;
3. State Key Laboratory of Super Hard Materials, Jilin University, Chang chun 130023

Received:1998-09-30 Online:1999-10-24 Published:1999-10-24

Abstract

Abstract: Incorporation of aluminum into MCM-41 framework was achieved in an alkali-free system, by using diethylamine as the base source. The properties of the product are compared with those of the samples obtained with NaOH. XRD and TEM results show that the resulted materiaLIs highly ordered. ²⁷AlMAS NMR experiment indicates that aluminum atoms are present with a 4-coordinated form in the as-synthesized samples. Upon calcination, a small amount of Al was removed from the framework, as indicated by a small peak characteristic of 6-coordinated ALIN the NMR profile. The surface acidity of the calcined samples were studied with Py-IR technique.

Key words: H-form MCM-41, Synthesis, Organic weak base, Surface acidity

CLC Number:

O614

TrendMD:

LIN Wen-Yong, PANG Wen-Qin, WEI Chang-Ping, LI Dong-Mei, ZHEN Kai-Ji . Synthesis and Characterization of H-form Aluminosilicate MCM-41 in a Novel Alkali-metal Free Media[J]. Chem. J. Chinese Universities, 1999, 20(10): 1495.

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Synthesis and Characterization of H-form Aluminosilicate MCM-41 in a Novel Alkali-metal Free Media

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