NaOH浓度对苯选择加氢制环己烯Ru-Zn催化剂性能的影响

doi:10.11949/j.issn.0438-1157.20151370

化工学报 ›› 2016, Vol. 67 ›› Issue (4): 1324-1332.DOI: 10.11949/j.issn.0438-1157.20151370

• 催化、动力学与反应器 • 上一篇下一篇

NaOH浓度对苯选择加氢制环己烯Ru-Zn催化剂性能的影响

孙海杰¹, 陈秀丽¹, 黄振旭¹, 刘仲毅², 刘寿长²

1. 郑州师范学院化学化工学院环境与催化工程研究所, 河南郑州 450044;
2. 郑州大学化学与分子工程学院, 河南郑州 450001

收稿日期:2015-08-31 修回日期:2016-01-11 出版日期:2016-04-05 发布日期:2016-04-05
通讯作者: 孙海杰
基金资助:
国家自然科学基金项目(21273205,U1304204);河南省高等学校重点科研项目(16A150025);河南省科技攻关重点项目(162102210333)。

Effect of NaOH concentration on performance of Ru-Zn catalyst for selective hydrogenation of benzene to cyclohexene

SUN Haijie¹, CHEN Xiuli¹, HUANG Zhenxu¹, LIU Zhongyi², LIU Shouchang²

1. Institute of Environmental and Catalytic Engineering, School of Chemistry and Chemical Engineering, Zhengzhou Normal University, Zhengzhou 450044, Henan, China;
2. College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, Henan, China

Received:2015-08-31 Revised:2016-01-11 Online:2016-04-05 Published:2016-04-05
Supported by:
supported by the National Natural Science Foundation of China (21273205, U1304204), the Key Scientific Research Project of Henan Province(16A150025) and the Key Scientific and Technological Research Project of Henan Province(162102210333).

摘要/Abstract

摘要：

用共沉淀法制备了纳米Ru-Zn催化剂,考察了不同浓度NaOH同时作沉淀剂和还原介质对苯选择加氢制环己烯Ru-Zn催化剂性能的影响,并用X射线衍射(XRD)、N₂物理吸附(BET)、X射线荧光光谱(XRF)和透射电镜(TEM)手段等对催化剂进行了表征。结果表明,NaOH浓度可以调变Ru-Zn催化剂的Zn含量、粒径和孔径,进而影响Ru-Zn催化剂的苯选择加氢制环己烯性能。NaOH含量为15%时制备的Ru-Zn催化剂在优化的反应条件下获得了61.5%的环己烯收率,而且该催化剂具有良好的重复使用性能。

关键词: 苯, 加氢, 钌, 催化剂, 沉淀剂, 还原介质

Abstract:

Ru-Zn catalysts were prepared by the co-precipitation method, and the effect of the different NaOH concentration as precipitant and reduction medium on the performance of Ru-Zn catalyst for selective hydrogenation of benzene to cyclohexene was investigated. The catalysts were characterized by X-ray diffraction (XRD), N₂ physisorption (BET), X-ray fluorescene (XRF) and transmission electron micrograph (TEM). It was found that the concentration of NaOH could modify the Zn contents, particle size and pore diameter, and then affect the performance of Ru-Zn catalysts. The Ru-Zn catalyst prepared with the NaOH concentration of 15% gave a high cyclohexene yield of 61.5%. Moreover, this catalyst exhibited the excellent reusability.

Key words: benzene, hydrogenation, ruthenium, catalyst, precipitant, reduction medium

中图分类号:

X511

孙海杰, 陈秀丽, 黄振旭, 刘仲毅, 刘寿长. NaOH浓度对苯选择加氢制环己烯Ru-Zn催化剂性能的影响[J]. 化工学报, 2016, 67(4): 1324-1332.

SUN Haijie, CHEN Xiuli, HUANG Zhenxu, LIU Zhongyi, LIU Shouchang. Effect of NaOH concentration on performance of Ru-Zn catalyst for selective hydrogenation of benzene to cyclohexene[J]. CIESC Journal, 2016, 67(4): 1324-1332.

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NaOH浓度对苯选择加氢制环己烯Ru-Zn催化剂性能的影响

Effect of NaOH concentration on performance of Ru-Zn catalyst for selective hydrogenation of benzene to cyclohexene

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