摘要
采用浸渍法制备了Ni掺杂的Cu-Zn O催化剂,采用多种物理化学手段研究了其化学物理性质及甘油加氢制取1,2-丙二醇反应催化性能。结果发现,金属Ni助剂的引入可以进一步优化Ni-Cu-Zn O催化剂的甘油加氢生成1,2-丙二醇的反应活性。少量金属Ni的加入,Ni-Cu-Zn O催化剂的甘油转化率变化不大,生成1,2-丙二醇的选择性明显增加。而进一步增加Ni含量到nNi/nCu=0.5,Ni含量过高会导致Ni-Cu-Zn O催化剂中实际Cu原子的量减少,从而导致甘油转化率下降。Ni掺杂的Cu-Zn O催化剂甘油加氢性能稳定性较好,在反应102 h后没有明显变化。
Ni doped Cu-Zn O catalysts were prepared by impregnation method. It showed good catalytic properites in glycerol hydrogenolysis to 1,2-propanediol（1,2-PDO） reaction. By means of X-Ray Diffraction（XRD）,Brunauer-Emmet-Teller method N2 physical adsorption（BET）, H2-Temperature-programmed reduction（H2-TPR）,N2 O chemisorptions and microreaction test, the physical-chemical properties and glycerol hydrogenolysis catalytic properties were studied. It is found that, Ni additives enhanced the catalytic performance in glycerol hydrogenolysis to 1,2-PDO reaction. With small amount Ni additives, the glycerol conversion showed a slight enhancement while a big enhancement for 1,2-PDO selectivity. When Ni content increased to nNi/nCu=0.5, the glycerol conversion decreased a little while 1,2-PDO remained in a high level. The Ni doped Cu-Zn O catalyst showed a good stability in glycerol hydrogenolysis to 1,2-PDO reaction while the catalytic performance kept over102 hours.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2016年第3期469-474,共6页
Chinese Journal of Inorganic Chemistry
基金
国家教育部博士点专项基金(No.2012009111001)
国家自然科学基金(No.21573105)资助项目
