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[1]王磊济,费兆阳,陈献,等.苯选择性加氢RuZn-ZrO2催化剂的基底形貌效应[J].南京工业大学学报(自然科学版),2019,41(01):15-21.[doi:10.3969/j.issn.1671-7627.2019.01.003]
 WANG Leiji,FEI Zhaoyang,CHEN Xian,et al.Substrate morphology effect of RuZn-ZrO2 catalyst on selective hydrogenation of benzene[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2019,41(01):15-21.[doi:10.3969/j.issn.1671-7627.2019.01.003]
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苯选择性加氢RuZn-ZrO2催化剂的基底形貌效应()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
41
期数:
2019年01期
页码:
15-21
栏目:
出版日期:
2019-01-28

文章信息/Info

Title:
Substrate morphology effect of RuZn-ZrO2 catalyst on selective hydrogenation of benzene
文章编号:
1671-7627(2019)01-0015-07
作者:
王磊济1费兆阳12陈献1汤吉海1崔咪芬1乔旭12
1.南京工业大学 化工学院,江苏 南京 210009; 2.南京工业大学 材料化学工程国家重点实验室,江苏 南京 210009
Author(s):
WANG Leiji1FEI Zhaoyang12CHEN Xian1TANG Jihai1CUI Mifen1QIAO Xu12
1.College of Chemical Engineering,Nanjing Tech University,Nanjing 210009,China; 2.State Key Laboratory of Materials-Oriented Chemical Engineering,Nanjing Tech University,Nanjing 210009,China
关键词:
形貌效应 晶相 环己烯 选择性加氢
Keywords:
morphology effect crystal phase benzene cyclohexene selective hydrogenation
分类号:
O643.32
DOI:
10.3969/j.issn.1671-7627.2019.01.003
文献标志码:
A
摘要:
以棒状和花状ZrO2为载体,采用化学还原浸渍法制备RuZn-ZrO2催化剂,利用X线衍射仪(XRD)、N2吸附-脱附、H2化学吸附、扫描电子显微镜(SEM)和傅里叶变换红外光谱仪(FT-IR)等表征催化剂的物理化学性质,并考察催化剂在苯选择性加氢反应中的催化性能。结果表明:花状四方相RuZn-ZrO2催化剂表现出最优的苯选择性加氢催化性能,不仅活性最高,而且环己烯选择性也最好,其较高的催化性能主要归因于高的Ru粒子分散度和高的饱和吸水量,这些物化性质依赖于ZrO2载体的独特形貌和晶相。动力学分析表明,苯加氢生成环己烯的反应速率常数(k1)与环己烯加氢生成环己烷的反应速率常数(k2)的比值与环己烯收率呈正相关。
Abstract:
RuZn-ZrO2 catalysts using rod and flower ZrO2 as the supports were prepared by wet impregnation-chemical reduction.The catalysts were characterized by X-ray diffraction(XRD),N2 adsorption-desorption,H2 chemisorption,scanning electron microscopy(SEM)and Fourier transform infrared spectroscopy(FT-IR).The catalytic performances of RuZn-ZrO2 catalysts were evaluated by the selective hydrogenation of benzene to cyclohexene.Results showed that the RuZn-ZrO2 catalysts exhibited the best catalytic activity and selectivity for cyclohexene.Its higher catalytic performance was ascribed to the higher Ru particle dispersion and higher saturated water absorption,which were due to the unique morphology and crystal phase of the ZrO2 support.Kinetic studies showed that the resulting k1/k2 ratio of the rate constants of the benzene to cyclohexene step(k1)and the cyclohexene to cyclohexane step(k2)was positively correlated with the yield of cyclohexene.

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备注/Memo

备注/Memo:
收稿日期:2017-05-17
基金项目:国家自然科学基金(21306089); 江苏高校优势学科建设工程
作者简介:王磊济(1991—),男,E-mail:18260032083@163.com; 费兆阳(联系人),副教授,E-mail:zhaoyangfei@njtech.edu.cn; 乔旭(联系人),教授,E-mail:qct@njtech.edu.cn.
引用本文:王磊济,费兆阳,陈献,等.苯选择性加氢RuZn-ZrO2催化剂的基底形貌效应[J].南京工业大学学报(自然科学版),2019,41(1):15-21..
更新日期/Last Update: 2019-02-26