Synthesis, Characterization of Mesoporous Al-Mg Composite Oxide and Catalytic Performance for Oxyethylation of Fatty Alcohol

Chemical Research in Chinese Universities ›› 2005, Vol. 21 ›› Issue (5): 601-605.

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Synthesis, Characterization of Mesoporous Al-Mg Composite Oxide and Catalytic Performance for Oxyethylation of Fatty Alcohol

SONG Wei-ming^1,2, DENG Qi-gang^2,3, ZHOU De-rui³, ZHAO De-feng¹

1. State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, P. R. China;
2. College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, P. R. China;
3. College of Science, Harbin Institute of Technology, Harbin 150001, P. R. China

Received:2005-04-05 Online:2005-09-23 Published:2011-08-06
Supported by:
Supported by the Natural Science Foundation of Heilongjiang Province(No.9810B).

Abstract

Abstract: A mesoporous Al-Mg composite oxide with a hexagonal structure was synthesized with aluminium nitrate and magnesium nitrate as the reagents and sodium dodecyl sulfate(SDS) as the template in the presence of ethylenediamine. The XRD, nitrogen adsorption-desorption and TEM studies indicate that the composite has a hexagonal framework structure and an average pore diameter of 2.6 nm. The TG/DTA spectra indicate that the decomposition and the removal of the occluded surfactant of the sample take place in a range of 230-550 ℃. The mesoporous Al-Mg composite oxide exhibites a highly catalytic activity for the oxyethylation of fatty alcohols. Narrow-range distributed ethoxylates are formed in the presence of the mesoporous Al-Mg composite oxide catalyst. The distribution selectivity coefficient(C_s) is 24 when the mesoporous Al-Mg composite oxide was used as a catalyst for the oxyethylation of octanol and the average adduct degree of ethoxylates is 6.4.

Key words: Mesoporous Al-Mg composites oxide, Characterization, Oxyethylation, Narrow-range distribution

SONG Wei-ming, DENG Qi-gang, ZHOU De-rui, ZHAO De-feng. Synthesis, Characterization of Mesoporous Al-Mg Composite Oxide and Catalytic Performance for Oxyethylation of Fatty Alcohol[J]. Chemical Research in Chinese Universities, 2005, 21(5): 601-605.

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Synthesis, Characterization of Mesoporous Al-Mg Composite Oxide and Catalytic Performance for Oxyethylation of Fatty Alcohol

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