摘要
采用“沉积沉淀-化学镀”法制备了Ni_(3)P/γ-Al_(2)O_(3)催化剂,利用X射线衍射(XRD)、N_(2)-物理吸附和透射电镜(TEM)对催化剂进行表征。考察了催化剂制备条件以及反应条件对Ni_(3)P/γ-Al_(2)O_(3)催化肉桂醛(CAL)选择加氢反应性能的影响。结果表明,负载量为25%、镀液pH为5.5制备的催化剂前体,经400℃下H_(2)热处理后获得的催化剂具有最高的苯丙醛(HCAL)收率。在70℃和1.0 MPa H_(2)下反应1 h,肉桂醛转化率为93.7%,苯丙醛选择性为90.1%。
Ni_(3)P/γ-Al_(2)O_(3)catalysts are prepared through deposition-precipitation followed by electroless plating, and characterized by means of powder X-ray diffraction(XRD),N_(2)-adsorption/desorption isotherms, and transmission electron microscope(TEM).The effects of catalyst preparation conditions and reaction conditions on the performance of Ni_(3)P/γ-Al_(2)O_(3)in selective hydrogenation of cinnamaldehyde are investigated.The results show that a thermal treatment to the catalyst precursor prepared with a loading of 25 wt%,and pH of 5.5 in H_(2)at 400℃ can lead to a highly dispersed Ni_(3)P/γ-Al_(2)O_(3)catalyst, which affords the highest yield to hydrocinnamaldehyde.The conversion of cinnamaldehyde is 93.7% and the selectivity of hydrocinnamaldehyde is 90.1% after the reaction has performed at 70℃ and 1.0 MPa H_(2)for 1 h.
作者
黄卉
遇治权
张朋
王瑶
刘颖雅
孙志超
王安杰
HUANG Hui;YU Zhi-quan;ZHANG Peng;WANG Yao;LIU Ying-ya;SUN Zhi-chao;WANG An-jie(State Key Laboratory of Fine Chemicals,Dalian University of Technology,Dalian 116024,China;Liaoning Provincial Key Laboratory of Petrochemical Technology and Equipment,Dalian 116024,China)
出处
《现代化工》
CAS
CSCD
北大核心
2022年第12期102-107,113,共7页
Modern Chemical Industry
基金
国家自然科学基金(22172012,22172015,21972014,U1508205)
科技部国家重点研发计划(2016YFE0109800)。
关键词
磷化镍
氧化铝
化学镀法
肉桂醛
选择加氢
nickel phosphide
alumina
electroless plating
cinnamaldehyde
selective hydrogenation
