摘要
甘油选择性氢解为1,3-丙二醇具有重要工业价值和学术研究价值。利用组装技术制备了铂/氧化钨/无定形硅铝氧化物催化剂,并对催化剂进行了透射电镜表征和元素分布分析。铂纳米粒子先与氧化钨纳米粒子组装,再负载于无定型硅铝氧化物,所得催化剂中铂与氧化钨结合良好,且表现出最佳催化性能;该催化剂上甘油转化率可达到70.7%,1,3-丙二醇选择性达到43.6%。铂的负载量和载体类型对1,3-丙二醇的选择性生成有重要影响。氨气程序升温脱附结果表明,三氧化钨的酸性位点与无定形硅铝氧化物酸性位点共同影响了甘油的转化和1,3-丙二醇的生成。
The selective hydrogenolysis of glycerol to 1,3-propanediol(1,3-PDO)is not only an important industrial process but a scientific issue.The platinum/tungsten oxide/amorphous silicon-aluminum oxide(Pt/WO_(3)/ASA)catalysts can be obtained with a self-assembly method,which are characterized with TEM and elemental mapping.The Pt nanoparticles first assembly with WO_(3) nanoparticles and the Pt/WO_(3) composite is then loaded on ASA to obtain the catalyst,in which catalyst Pt nanoparticles well combine with WO_(3) nanoparticles.The optimized catalyst 2 Pt/10 W/ASA exhibits best catalytic performance in the selective hydrogenolysis of glycerol;over the optimized catalyst,at the conversion of glycerol reach 70.7%,and the selectivity of 1,3-PDO can reach 43.6%.The loading percentages of Pt and types of the support are very important for the formation of 1,3-PDO.The NH_(3)-TPD results reveal that the acidic sites in WO_(3) and ASA are very important for the conversion of glycrol and the production of 1,3-PDO.
作者
尹艳艳
赵余龙
孙齐磊
肖滋成
薛富民
梁明会
YIN Yanyan;ZHAO Yulong;SUN Qilei;XIAO Zicheng;XUE Fumin;LIANG Minghui(Shandong Jianzhu University,Jinan 250101,Shandong,China;National Center for Nanoscience and Technology,Beijing 100190,China;Hubei University of Technology,Wuhan 430068,Hubei,China;Qilu University of Technology,Jinan 250014,Shandong,China)
出处
《金属功能材料》
CAS
2021年第6期44-51,共8页
Metallic Functional Materials
基金
北京市科委科技计划资助项目(Z161100001116080)。
关键词
自组装
催化剂
甘油
1
3-丙二醇
选择性氢解
self-assembly
catalyst
glycerol
1,3-propanediol
selective hydrogenolysis
作者简介
尹艳艳(1995-),女,硕士生,E-mail:yinyy2019@nanoctr.cn;通讯作者:孙齐磊(1977-),男,博士,E-mail:qileisun@163.com;通讯作者:梁明会(1978-),男,博士,副研究员,E-mail:liangmh®nanoctr.cn。
