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Catalytic synthesis of dibenzalpenlpentaerythritol by Ce-tioso_4 as composite catalyst
Author(s): WU Hu, MAO Lixin, LIAO Dezhong(departmentofchemistryandchemicalengineering, HUNAN Instituteofscienceandtechnology, YUEYANG 414000, china)
Pages: 77-
80
Year: 2006
Issue:
3
Journal: Journal of Yueyang Normal University
Keyword: 季戊四醇双缩苯甲醛; 硫酸铈; 硫酸钛; 复合催化剂; 合成; 催化活性;
Abstract: 以硫酸铈掺杂硫酸钛后经450℃高温焙烧制得一类新型复合固体酸催化剂,考察了该催化剂在合成季戊四醇双缩苯甲醛中的催化活性和选择性,在苯甲醛与季戊四醇摩尔比为2.0:1(3.38ml,2.269g),催化剂用量为0.1135g,回流温度83℃,反应时间2h的优化条件下,反应产率为87.7%。且催化剂容易制备,稳定性好,可连续使用。基于布朗斯特酸碱理论,结合稀土金属和过渡金属丰富的轨道能级结构,对复合催化剂的催化活性的成因进行了分析,并以吡啶作为探针分子,通过红外光谱法检测了催化剂表面的酸性质。
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