负载型纳米Au/Cr_2O_3催化甘油氧化合成甘油酸  

Selective Oxidation of Glycerol to Glyceric Acid Catalyzed by Supported Nanosized Au/Cr_2O_3

作　　者：王晓丽[1] 吴功德[1] 刘献锋[1] 张方[1] 薛云波[1] 唐旭[1] 金同发 

机构地区：[1]南京工程学院环境工程学院,江苏南京211167

出　　处：《分子催化》2017年第4期334-340,共7页Journal of Molecular Catalysis(China)

基　　金：国家自然科学基金(21203093);江苏省自然科学基金(BK20141388;BK20161481);江苏省产学研合作-前瞻性联合研究项目(BY2016008-03);南京工程学院"学术拔尖人才工程";南京工程学院大学生创新基金(TP20161201;TZ20170023)~~

摘　　要：制备了一系列负载型纳米Au/Cr_2O_3催化剂,采用ICP、FTIR、XRD和N2吸附脱附对所制备的催化剂进行了表征.以3%的H_2O_2为氧化剂,考察其对甘油选择性氧化反应的催化性能.结果表明,该类催化剂在甘油选择性氧化反应中表现出了较好的催化性能,其中Au/Cr_2O_3(0.95%)的催化性能最好,甘油转化率可达81.5%,甘油酸选择性为67.0%,且该非均相催化剂重复使用10次后仍保持较高的催化活性.A series of supported nanosized Au/Cr2O3 were prepared and characterized by various physico-chemical measurements such as ICP, FTIR, XRD and N2 sorption. The supported catalysts were effective in the selective oxidation of glycerol to glyceric acid with 3 % hydrogen peroxide. Under the optimal reaction conditions, the highest conversion of glycerol reached 81.5% with 67.0% of the selectivity to glyceric acid over Au/Cr2O3（0.95% ）. In addition, the catalytic activity was remained after being recycled 10 times.

关 键 词：纳米金 负载 氧化物 甘油 甘油酸 

分 类 号：O643.32[理学—物理化学]