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Synthesis, Characterization of Mesoporous Al-Mg Composite Oxide and Catalytic Performance for Oxyethylation of Fatty Alcohol
作者姓名:SONG  Wei-ming  DENG  Qi-gang  ZHOU  De-rui  ZHAO  De-feng
作者单位:[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
摘    要: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(Cx) 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.

关 键 词:    复合氧化物  合成方法  结构表征  催化反应  脂肪
文章编号:1005-9040(2005)-05-601-05
收稿时间:2005-04-05

Synthesis, Characterization of Mesoporous Al-Mg Composite Oxide and Catalytic Performance for Oxyethylation of Fatty Alcohol
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 University,2005,21(5):601-605.
Authors:SONG Wei-ming  DENG Qi-gang  ZHOU De-rui  ZHAO De-feng
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(Cs) 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.
Keywords:Mesoporous Al-Mg composites oxide  Characterization  Oxyethylation  Narrow-range distribution
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