SO42-/TiO2-SnO2固体酸催化剂的制备及其催化合成丙烯酸苄酯

doi:10.16085/j.issn.1000-6613.2017-1444

化工进展 ›› 2018, Vol. 37 ›› Issue (05): 1823-1830.DOI: 10.16085/j.issn.1000-6613.2017-1444

SO₄^2-/TiO₂-SnO₂固体酸催化剂的制备及其催化合成丙烯酸苄酯

潘柳依^1,2, 淡勇¹, 王军峰³, 牛梦龙⁴, 范铮⁴, 李稳宏¹

1 西北大学化工学院, 陕西西安 710069;
2 宝鸡文理学院化学化工学院, 陕西宝鸡 721013;
3 陕西延长石油(集团)有限责任公司, 陕西西安 710075;
4 西安石油大学化学化工学院, 陕西西安 710065

收稿日期:2017-07-13 修回日期:2017-12-10 出版日期:2018-05-05 发布日期:2018-05-05
通讯作者: 淡勇,教授,硕士生导师,研究方向为能源化工和化工机械。
作者简介:潘柳依(1990-),女,博士研究生,研究方向为催化合成。E-mail:liuyi88611@163.com。

Preparation of SO₄^2-/TiO₂-SnO₂ solid acid catalyst and its catalytic activity in synthesis of benzyl acrylate

PAN Liuyi^1,2, DAN Yong¹, WANG Junfeng³, NIU Menglong⁴, FAN Zheng⁴, LI Wenhong¹

1 School of Chemical Engineering, Northwest University, Xi'an 710069, Shaanxi, China;
2 School of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, Shaanxi, China;
3 Shaanxi Yanchang Petroleum(Group) Co., Ltd., Xi'an 710075, Shaanxi, China;
4 College of Chemistry & Chemical Engineering, Xi'an Shiyou University, Xi'an 710065, Shaanxi, China

Received:2017-07-13 Revised:2017-12-10 Online:2018-05-05 Published:2018-05-05

摘要/Abstract

摘要： 采用共沉淀法制备了SO₄^2-/TiO₂-SnO₂固体酸催化剂，利用SEM-EDS、XRD、FTIR、Py-IR、XPS等技术对其进行了表征，结果表明：Sn掺杂会改变催化剂晶型结构与酸性中心的数量和分布情况。在Sn掺杂量为5%、焙烧温度为500℃条件下，将其用于丙烯酸苄酯合成，显示了良好的催化活性。通过对反应条件进行优化，结果表明：酸醇摩尔比为1.3∶1、催化剂用量3%、反应温度120℃时，反应苯甲醇的转化率为93.1%，产物选择性为98.8%。与SO₄^2-/TiO₂相比，其反应活性与稳定性显著提高，抗结焦能力增强。

关键词: 固体酸催化剂, 锡掺杂, 丙烯酸苄酯

Abstract: SO₄^2-/TiO₂-SnO₂ solid acid catalysts prepared by co-precipitation method and then were characterized by SEM-EDS,XRD,FTIR,Pyridine-IR and XPS. The result showed that crystal structure of the catalyst,and the quantity and distribution of the acid centers were changed by doping Sn. The catalyst doped with 5% Sn and calcined at 500℃ showed excellent catalytic activity in the synthesis of benzyl acrylate. Under the optimal conditions of 3% catalyst,reaction temperature of 120℃,and ratio of acid and olefin of 1.3:1,the conversion of phenylcarbinol was 93.1% and the selectivity of the product was 98.8%. Compared with SO₄^2-/TiO₂,the reactivity,stability and the anticaking ability were significantly improved.

Key words: solid acid catalyst, Sn doping, benzyl acrylate

中图分类号:

TQ231.2

潘柳依, 淡勇, 王军峰, 牛梦龙, 范铮, 李稳宏. SO₄^2-/TiO₂-SnO₂固体酸催化剂的制备及其催化合成丙烯酸苄酯[J]. 化工进展, 2018, 37(05): 1823-1830.

PAN Liuyi, DAN Yong, WANG Junfeng, NIU Menglong, FAN Zheng, LI Wenhong. Preparation of SO₄^2-/TiO₂-SnO₂ solid acid catalyst and its catalytic activity in synthesis of benzyl acrylate[J]. Chemical Industry and Engineering Progress, 2018, 37(05): 1823-1830.

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SO₄^2-/TiO₂-SnO₂固体酸催化剂的制备及其催化合成丙烯酸苄酯

Preparation of SO₄^2-/TiO₂-SnO₂ solid acid catalyst and its catalytic activity in synthesis of benzyl acrylate

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