%0 Journal Article
%T Synthesis of hydrophobic bifunctional mesoporous solid acid catalysts and their performance evalution in the esterification reaction of acetic acid with ethanol<br>疏水双功能介孔固体酸的合成及其在乙酸乙酯酯化反应中的应用
%A XUE Hai-xia
%A LI Jun-ping
%A XU Zhen-qin
%A WANG Feng
%A ZHAO Ning
%A XIAO Fu-kui
%A WEI Wei
%A SUN Yu-han
%A <br>薛海霞
%A 李军平
%A 许振芹
%A 王峰
%A 赵宁
%A 肖福魁
%A 魏伟
%A 孙予罕
%J 燃料化学学报
%D 2009
%I 
%X Single-step synthesis of bifunctional mesoporous solid acid materials SBA-15-SO_3H-(CH_3)_x containing different hydrophobic alkyl (methyl, dimethyl or trimethyl) was carried out by hydrothermal treatment of gels. The catalysts were characterized by XRD, N_2 adsorption, elementary analysis, and were tested in the esterification reaction of acetic acid with ethanol. The results revealed that the hydrophobicity of the as-prepared materials increased with the increase of methyl number of hydrophobic precursors, and the catalytic activity increased with the hydrophobicity of the materials. Among these materials, SBA-15-SO_3H-(CH_3)_3 showed good performance toward the esterification reaction. Effects of reaction temperature, catalyst amounts, reaction time and the molar ratios of acetic acid/ ethanol over the catalyst SBA-15-SO_3H-(CH_3)_3 were also studied. Under the optimal reaction conditions of temperature 120℃, n(acetic acid)∶ n(ethanol) = 4∶1, catalyst 1%, time 1h, the conversion of ethanol and the selectivity of ethyl acetate were 93% and 100%, respectively.
%K solid acid catalysts
%K mesoporous
%K hydrophobicity
%K esterification)<br>固体酸催化剂
%K 介孔
%K 疏水性
%K 酯化反应
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=6579068328FE643F&jid=C6AB115B41BD2F1616ECDB095B69B8ED&aid=2D8C45B3541BDAC451A0A41C9C000C06&yid=DE12191FBD62783C&vid=42425781F0B1C26E&iid=B31275AF3241DB2D&sid=F4DCFB3CB96519BF&eid=8A6D8366EA57F0FF&journal_id=0253-2409&journal_name=燃料化学学报&referenced_num=0&reference_num=12