Ni2P/ZrO2催化剂对苯酚的加氢性能

采用浸渍法及热分解法合成了不同负载量的Ni₂P/ZrO₂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Ni₂P活性的影响。结果表明：Ni₂P分散负载在ZrO₂的表面，ZrO₂载体降低了Ni₂P的粒径，有效防止了Ni₂P的聚集，显著提高了Ni₂P对苯酚加氢脱氧的活性。在相同催化条件下，10%-Ni₂P/ZrO₂呈现出最佳催化活性。以10%-Ni₂P/ZrO₂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%。

Hydrogenation of phenol over Ni2P/ZrO2 catalysts

Ni₂P/ZrO₂ 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 N₂ adsorption-desorption to study their physicochemical properties. The catalytic performance has been investigated by hydrotreating of phenol. Compared with unsupported Ni₂P,Ni₂P nanoparticles dispersed on the ZrO₂ surface have much smaller particle size. ZrO₂ can effectively reduce the particle size and prevent the aggregation of Ni₂P,which significantly improved the catalytic performance. The catalyst with 10% nickel loading (10%-Ni₂P/ZrO₂) 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.