摘要
采用水热法制备了Ni3Si2O5（OH）4，在823K下通过氢气还原制备出了具有核壳结构Ni／SiO2催化剂，探讨以Ni／SiO2为催化剂，反应时间、温度、压力等因素对硝基苯液相加氢性能的影响，确定了硝基苯液相加氢适宜的条件，在该条件下硝基苯的转化率为97％，苯胺的选择性为99％。
Ni3Si2O5（OH）4 microspheres have been synthesized by a hydrothermal method, and Ni/SiO2 catalysts with core- shell structure have been successfully fabricated by hydrogen reduction at 823K. The effects of reaction time, temperature and pressure for nitrobenzene liquid hydrogenation on Ni/SiO2 catalysts were investigated. The results indicate that the conversion of the nitrobenzene can reach to 97%, and the selectivity of the phenylamine can reach 99% at optimum conditions.
基金
基金项目：国家自然科学基金项目（51272115）.高等学校博士学科点专项科研基金项目（20093719110003）.青岛市科技局资助项目（10-3-4-4-9-jch）.山东省自然科学基金项目（ZR2012EMM001）
关键词
水热法
核壳结构
硝基苯催化加氢
NI
SIO2催化剂
hydrothermal method
core-shell structure
nitrobenzene catalytic hydrogenation
Ni/SiO2 catalyst
