摘要
用浸渍-燃烧法制备了固体超强碱Mg O-Ca O和Mg O-Sr O负载的高分散铜基催化剂,并将其用于甘油氢解制备1,2-丙二醇的反应。N2吸附、X射线衍射、透射电子显微镜、H2程序升温还原和N2O氧化吸附及CO2程序升温脱附等表征实验结果显示:Cu粒子均分散于Cu/Mg O-Ca O(或者Cu/Mg O-Sr O)催化剂的表面;与Cu/Mg O相比,Cu/Mg O-Ca O和Cu/Mg O-Sr O具有更强的碱性,可以加速甘油的转化。上述结果表明,甘油氢解反应中铜催化剂的活性随碱性的增强而增加。
Highly dispersed copper nanoparticles supported on combined alkaline-earth metal oxides MgO-CaO and MgO-SrO were synthesized by impregnation-combustion method and used for hydrogenolysis of glycerol. The nanoparticles were characterized using N2-adsorption, X-ray diffraction, transmission electronic microscope, temperature-programmed reduction with H2, dissociative N2O adsorption and CO2 temperature-programmed desorption. The results revealed that Cu particles dispersed highly on the surface of Cu/MgO-CaO and Cu/MgO-SrO catalyst. The enhanced alkalinity of Cu/MgO-CaO and Cu/MgO-SrO accelerated the conversion of glycerol compared to Cu/MgO. It was concluded that the activity of Cu-based catalyst increased with its alkalinity.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2015年第8期3014-3021,共8页
CIESC Journal
基金
国家自然科学基金项目(21473155,21273198,21073159)
浙江省自然科学基金项目(LZ12B03001)~~
关键词
生物柴油
甘油
氢解
1
2-丙二醇
固体碱
biodiesel
glycerol
hydrogenolysis
1,2-propanediol
solid-base
