Selective oxidation of Cyclohexane Catalysis in SBA-15

doi:10.3696/j.issn.1006-396X.2011.02.015

Journal of Petrochemical Universities ›› 2011, Vol. 24 ›› Issue (2): 58-61.DOI: 10.3696/j.issn.1006-396X.2011.02.015

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Selective oxidation of Cyclohexane Catalysis in SBA-15

Liaoning Key Laboratory of Petrochemical Engineering, Liaoning Shihua University, Fushun Liaoning 113001, P.R.China

Received:2011-03-07 Revised:2011-04-12 Published:2011-04-25 Online:2011-04-25

SBA-15在环己烷选择性氧化中的催化研究

张晓彤,张翻,高翔,秦玉才,陈雷,宋丽娟^*

辽宁石油化工大学辽宁省石油化工重点实验室,辽宁抚顺113001

作者简介:张晓彤(1970 -), 男, 辽宁抚顺市, 副教授, 在读博士。
基金资助:
辽宁省教育厅科技项目(2007R29);国家自然科学基金项目(20976077)

Abstract

Abstract:

Au/SBA-15, Au-Ni/SBA-15, Au-Co/SBA-15 catalyst were prepared by in situ synthesis and deposition synthesis, and the crystal structure and metal dispersion were characterized by XRD, TEM-EDS and other means. In the condition of absence of any organic solvents or additives, air was used as the oxidant to oxidize cyclohexane selectively, and catalytic properties were evaluated in this reaction. It is found that good synergistic effect exists in the two-metal catalysts for selective oxidation of cyclohexane to cyclohexanone and cyclohexanol, which can greatly increase the catalytic activity. The conversion rate of cyclohexane is 22.1%, and the total selectivity of cyclohexanol and cyclohexanone is 95.1%, when Au-Co/SBA-15 was used as the catalyst in the condition of 3 MPa, 423 K and 2 hours.

Key words:

SBA-15, , Cyclohexane, , Characterization, , Synergistic effect

摘要： 采用原位合成法制备出Au/SBA -15 催化剂, 用沉积-沉淀方法制备出Au-Ni/ SBA -15 、Au -Co/ SBA -15 催化剂, 通过XRD、TEM -EDS 等手段对晶体结构和金属分散度进行表征。在没有任何有机溶剂或助剂的条件下, 以空气为氧化剂做环己烷选择性氧化, 并用该反应对催化剂催化性能进行评价。结果表明, 双金属催化剂对选择氧化环己烷制备环己酮和环己醇表现了良好的协同作用, 可以大大增加催化剂的活性。以Au -Co/SBA -15 为催化剂, 反应压力3 MPa , 反应温度为423 K , 反应时间2 h 时, 环己烷的转化率为22 .1 %, 环己醇和环己酮的总选择性为95 .1 %。

关键词: SBA-15 , 环己烷 , 表征 , 协同作用

ZHANG Xiao-tong, ZHANG Fan, GAO Xiang, et al. Selective oxidation of Cyclohexane Catalysis in SBA-15[J]. Journal of Petrochemical Universities, 2011, 24(2): 58-61.

张晓彤,张翻,高翔. SBA-15在环己烷选择性氧化中的催化研究[J]. 石油化工高等学校学报, 2011, 24(2): 58-61.

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Selective oxidation of Cyclohexane Catalysis in SBA-15

SBA-15在环己烷选择性氧化中的催化研究

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