Hydrogenation of phenol over Ni2P/ZrO2 catalysts

doi:10.16085/j.issn.1000-6613.2017-0819

Abstract

Abstract: 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.

Key words: biofuel, catalysis, hydrogenation, phenol, nickel phosphide, zirconium oxide (ZrO₂)

摘要： 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%。

关键词: 生物能源, 催化, 加氢, 苯酚, 磷化镍, 氧化锆

CLC Number:

TE624

LI Chenrui, LUO Hao, SUN Yuewei, ZHANG Ruiqin, LIU Yonggang. Hydrogenation of phenol over Ni₂P/ZrO₂ catalysts[J]. Chemical Industry and Engineering Progress, 2018, 37(03): 1008-1013.

李晨芮, 罗昊, 孙越伟, 张瑞芹, 刘永刚. Ni₂P/ZrO₂催化剂对苯酚的加氢性能[J]. 化工进展, 2018, 37(03): 1008-1013.

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Hydrogenation of phenol over Ni₂P/ZrO₂ catalysts

Ni₂P/ZrO₂催化剂对苯酚的加氢性能

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