第 53 卷第 1 期Vol. 53 No. 1
2023 年 2 月Feb 2023

所属栏目:功能材料

纳米金/香草醇基介孔碳催化剂在苯甲醇氧化中的应用
王倩芳1,2,肖 佳1,2,张平秀1,2,何 婧1,2,喻宁亚1,2* (1. 湖南师范大学 化学化工学院,湖南 长沙 410081;2. 石化新材料与资源精细利用国家地方联合工程实验室,湖南 长沙 410081)
摘 要:以木质素降解产物香草醇替代苯酚,合成中加入金前驱体和稳定剂,在模板剂F127(EO106PO70EO106)存在下,一步法合成了具有蠕虫状孔道结构的纳米金/香草醇基介孔碳催化剂。催化剂催化氧化苯甲醇性能良好。优化条件为:催化剂用量25 mg,苯甲醇1 mmol,碳酸钾用量2 mmol,水用量5 mL,反应温度100 ℃,反应时间6 h。优化条件下,苯甲醇转化率为98.4%,苯甲酸选择性为98.0%。催化剂重复使用4次,其催化性能基本保持不变。
关键词:金纳米粒子;香草醇;介孔碳;苯甲醇;氧化
中图分类号:O621.25+4  文献标识码:A  文章编号:1009-9212(2023)01-0072-07
Catalytic Application of Au/Vanillyl Alcohol-based Mesoporous Carbon in Oxidation of Benzyl Alcohol
WANG Qian-fang1,2, XIAO Jia1,2, ZHANG Ping-xiu1,2, HE Jing1,2, YU Ning-ya1,2* (1. College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China; 2. National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Changsha 410081, China)
Abstract:Using vanillyl alcohol, being one of degradation products of lignin, as a substitution for phenol, Au nanoparticle/mesoporous carbon composite catalysts with worm-like mesostrucsture were prepared via an one-pot procedure involving in-situ addition of Au precursor and stabilizer in the presence of template of F127 (EO106PO70EO106). The resultant catalysts showed good catalytic performance in aerobic oxidation of benzyl alcohol. Under optimal reaction conditions (25 mg of catalyst, 1 mmol of benzyl alcohol, 2 mmol of K2CO3, 5 mL of water, 100 ℃, 6 h), the conversion of benzyl alcohol and the selectivity to benzoic acid were as high as 98.4% and 98.0%, respectively. In addition, the above catalyst could be used for 4 times without significant loss of catalytic activity.
Key words:Au nanoparticle; vanillyl alcohol; mesoporous carbon; benzyl alcohol; oxidation
作者简介:王倩芳(1998—),女,河南濮阳人,研究方向:有机催化(E-mail:3297795403@qq.com)。
联 系 人:喻宁亚,教授,博士,研究方向:催化化学研究(E-mail:yuningya@hotmail.com)。
收稿日期:2022-10-23