催化作用
选择性
四氢呋喃
合金
纳米颗粒
琥珀酸
同种类的
产量(工程)
材料科学
金属
化学工程
路易斯酸
1,4-丁二醇
化学
无机化学
冶金
纳米技术
有机化学
物理
溶剂
工程类
热力学
作者
Son Dinh Le,Shun Nishimura
标识
DOI:10.1016/j.apcatb.2020.119619
摘要
Three kinds of supported CuPd catalysts are studied for the hydrogenation of succinic acid (SA) to value-added chemicals including γ-butyrolactone (GBL), 1,4-butanediol (BDO), and tetrahydrofuran (THF). The strength of metal–support interaction played an essential role in the construction of CuPd nanoparticles (NPs), inducing different catalytic activity and selectivity. In-depth characterizations revealed that while homogeneous alloys were dominantly constructed on TiO2 and SiO2 supports, heterogeneous alloy with a great extent of Cu segregation was preferably formed on γ-Al2O3. Although a high GBL selectivity was achieved over CuPd/TiO2, large particles with the least Cu segregation caused a lower SA conversion while preventing it from further hydrogenation. In contrast, smaller CuPd NPs with a minority of Cu segregation on SiO2 made it a superior catalyst in the BDO production. Notably, strong Lewis acid sites on γ-Al2O3 occupied a major role in the formation of highly selective THF with a nearly quantitative yield.
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