| 新工艺制备固体超强酸SO42-/SnO2-Nb2O5及其催化松油醇酯化 |
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| 引用本文： | 黄建团,郭海福,闫鹏,陈志胜.新工艺制备固体超强酸SO42-/SnO2-Nb2O5及其催化松油醇酯化[J].化学研究与应用,2012,24(6):940-947. |
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| 作者姓名： | 黄建团 郭海福 闫鹏 陈志胜 |
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| 作者单位： | 1. 肇庆学院化学化工学院,广东肇庆526061;内蒙古工业大学化工学院,内蒙古呼和浩特010051
2. 肇庆学院化学化工学院,广东肇庆,526061 |
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| 基金项目： | 肇庆市科技计划项目，肇庆市科技创新计划项目，广东省普通高校工程技术开发中心建设项目 |
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| 摘 要： | 采用新工艺制备固体超强酸SO42-/SnO2-Nb2O5,将其应用于松油酯化反应。催化剂最佳制备条件:Nb2O5引入(SnO2质量分数)3%,浸渍硫酸浓度1.5 mol/L,500℃焙烧3.0 h;最佳反应条件:n(松油醇):n(乙酸酐)=1.0:1.2,催化剂用量(松油醇质量分数)5%,50℃反应3.0 h;并采用FT-IR、XRD、TG-DTA对催化剂进行表征。结果表明:催化剂可使得松油醇转化率达94.3%,乙酸松油酯选择性达86.2%,新工艺制备的催化剂较沉淀法和sol-gel法的活性高。
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| 关 键 词： | 新工艺 固体超强酸 五氧化二铌 酯化 乙酸松油酯 制备 表征 |
Preparation of solid superacid SO42-/SnO2-Nb2O5 by a new technology and applied it to catalyze the esterification of terpineol |
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| HUANG Jian-tuan
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GUO Hai-fu
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YAN Peng
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CHEN Zhi-sheng.Preparation of solid superacid SO42-/SnO2-Nb2O5 by a new technology and applied it to catalyze the esterification of terpineol[J].Chemical Research and Application,2012,24(6):940-947. |
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| Authors: | HUANG Jian-tuan GUO Hai-fu YAN Peng CHEN Zhi-sheng |
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| Institution: | 1(1.College of Chemistry and Chemical Engineering,Zhaoqing University,Zhaoqing,5260621,China; 2.College of Chemical Engineering,Inner Mongolia University of Technology,Huhhot,010051,China) |
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| Abstract: | Use a new technology to prepare Soild superacid of SO42-/SnO2-Nb2O5.Applied it to catalyze the esterification of terpineol.The optimum preparation conditions for the catalyst are:content of Nb2O5 3%(mass fraction in SnO2),impregnated with 1.5 moL/L,calcinated at 500 ℃ for 3 h.The optimum reaction conditions for the esterification of terpineol are:n(terpineol):n(acetic anhydride)=1.0:1.2,catalyst quantity 5%(mass fraction in terpineol),react at 50 ℃ for 3 h.These catalysts were characterized by XRD、FT-IR and TG-DTA.The results show that:the conversion of terpineol reached 94.3%and the Selectivity of Terpinyl acetate reached 86.2%in the reaction,the new method is much better than precipitation and sol-gel in preparation of catalyst. |
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| Keywords: | New technology Soild superacid Niobium pentaoxide Esterify Terpinyl Preparation Characterization |
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