Ni_2P/ZrO_2催化剂对苯酚的加氢性能  

Hydrogenation of phenol over Ni_2P/ZrO_2 catalysts

作　　者：李晨芮 罗昊 孙越伟 张瑞芹[1,2] 刘永刚[1,2] 

机构地区：[1]郑州大学化学与分子工程学院,河南郑州450001 [2]郑州大学环境科学研究院,河南郑州450001

出　　处：《化工进展》2018年第3期1008-1013,共6页Chemical Industry and Engineering Progress

基　　金：河南省国际合作项目(172102410041)

摘　　要：采用浸渍法及热分解法合成了不同负载量的Ni_2P/Zr O_2催化剂,通过XRD、TEM和氮气吸脱附等多种手段表征其物理化学性质,并通过对苯酚的加氢处理来研究载体对Ni_2P活性的影响。结果表明:Ni_2P分散负载在Zr O_2的表面,Zr O_2载体降低了Ni_2P的粒径,有效防止了Ni_2P的聚集,显著提高了Ni_2P对苯酚加氢脱氧的活性。在相同催化条件下,10%-Ni_2P/Zr O_2呈现出最佳催化活性。以10%-Ni_2P/Zr O_2为代表考察催化反应最优条件,在反应温度300℃、初始氢气压5MPa下反应2h,苯酚转化率达到90.8%,环己烷选择性达到91.7%。Ni_2P/Zr O_2 catalysts with different loading of nickel were prepared by impregnation and thermal decomposition method and characterized by a variety of techniques such as XRD,TEM and N_2adsorption-desorption to study their physicochemical properties.The catalytic performance has been investigated by hydrotreating of phenol.Compared with unsupported Ni_2P,Ni_2P nanoparticles dispersed on the Zr O_2 surface have much smaller particle size.Zr O_2 can effectively reduce the particle size and prevent the aggregation of Ni_2P,which significantly improved the catalytic performance.The catalyst with 10%nickel loading（10%-Ni_2P/Zr O_2）exhibited the best activity.The conversion of phenol and the selectivity of cyclohexane reached 90.8%and 91.7%,respectively under reaction temperature of 300℃,initial hydrogen pressure of 5MPa and reaction time of 2 hours.

关 键 词：生物能源 催化 加氢 苯酚 磷化镍 氧化锆 

分 类 号：TE624[石油与天然气工程—油气加工工程]