高校化学工程学报2018，Vol.32Issue(1)：117-123,7.DOI:10.3969/j.issn.1003-9015.2018.01.016
n型半导体氧化物上的Cu基催化剂对醋酸异丙酯加氢性能的影响
Effects of Cu/n-Type Semiconductor Oxides on Isopropyl Acetate Hydrogenation
摘要
Abstract
Ethanol and isopropanol were prepared via hydrogenation of isopropyl acetate catalyzed by six different copper-based catalysts (CuO-ZnO, CuO-Fe2O3, CuO-CeO2, CuO-TiO2, CuO-BaO and CuO-SnO2, respectively).All of the catalysts were prepared by co-precipitation and their physiochemical properties were characterized by X-ray diffraction(XRD), H2-temperature-programmed reduction(TPR), N2O oxidation titration, inductively coupled plasma(ICP) element analysis, NH3-temperature-programmed desorption(TPD) and X-ray photoelectron spectroscopy(XPS). Effects of different oxides on copper dispersion, specific surface area of copper active sites, surface acidity, copper binding energy and catalytic reaction were investigated.Results show that the catalytic activity is different with an order of Cu-ZnO > Cu-Fe2O3> Cu-CeO2> Cu-TiO2>Cu-BaO > Cu-SnO2. Cu-ZnO shows the best catalytic activity as it has the lowest reduction temperature, the highest copper dispersion and specific surface area of active sites, the smallest particle size and the strongest binding energy. Moreover, it shows the highest ethanol selectivity and lowest ethyl acetate selectivity due to the lowest acidity. Cu-BaO and Cu-SnO2show poor catalytic activity due to their formation of copper barium composite oxide and copper-tin alloy after reduction. Cu-Fe2O3shows good ethanol selectivity due to its lower acidity.关键词
n型半导体氧化物/醋酸异丙酯/加氢/乙醇/异丙醇Key words
n-type semiconductor oxides/isopropyl acetate/hydrogenation/ethanol/isopropanol分类
化学化工引用本文复制引用
罗丽娟,崔咪芬,费兆阳,陈献,汤吉海,乔旭..n型半导体氧化物上的Cu基催化剂对醋酸异丙酯加氢性能的影响[J].高校化学工程学报,2018,32(1):117-123,7.基金项目
江苏高校优势学科建设工程资助项目(PADD). （PADD）
