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现代化工  2019, Vol. 39 Issue (3): 181-184,186    DOI: 10.16606/j.cnki.issn0253-4320.2019.03.040
  科研与开发 本期目录 | 过刊浏览 | 高级检索 |
Pt/TiO2催化间甲基苯酚加氢脱氧路径探究
赵翔宇1, 李梅2
1. 天津大学化工学院, 天津 300072;
2. 中国民航大学理学院, 天津 300300
Major reaction pathways for hydrodeoxygenation of m-cresol over Pt/TiO2 catalyst
ZHAO Xiang-yu1, LI Mei2
1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
2. School of Science, Civil Aviation University of China, Tianjin 300300, China
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摘要 通过等体积浸渍法制备了催化剂Pt/TiO2。利用间甲基苯酚及其中间产物(甲基环己酮、甲基环己醇、甲基环己烷和甲苯等)在催化剂Pt/TiO2上的反应探究了甲基苯酚加氢脱氧的反应路径。利用XRD、H2-TPR、TEM、NH3-TPD、XPS等对催化剂的表面性质和结构性质进行了表征。结果表明,金属Pt能高度分散在载体TiO2上。Pt/TiO2催化间甲基苯酚加氢脱氧反应主要存在2种路径:一种是间甲基苯酚直接脱氧生成甲苯(DDO路径);另一种是间甲基苯酚先加氢生成甲基环己酮、甲基环己醇,然后脱水生成甲基环己烯,再加氢生成甲基环己烷。
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赵翔宇
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关键词:  间甲基苯酚  Pt/TiO2  加氢脱氧  反应路径  等体积浸渍法    
Abstract: Pt/TiO2 catalyst is prepared by incipient wetness impregnation.In order to get the reaction pathways of m-cresol hydrodeoxygenation,m-cresol and its intermediate products such as methyl cyclohexanone,methyl cyclohexanol,methyl cyclohexane and toluene are investigated over Pt/TiO2 catalyst at 250oC and ambient hydrogen pressure.The structures and properties of Pt/TiO2 is also investigated by various techniques such as XRD,TEM,BET,XPS,CO chemisorption,NH3-TPD,H2-TPR etc.It is found that Pt particles disperse highly onto the TiO2 supporter.There are two main reaction pathways for hydrodeoxygenation of m-cresol.The first one is the direct deoxygenation to toluene (DDO path) and the second one is that hydrodeoxygenation of m-cresol forms firstly methylcyclohexanone and methylcyclohexanol over Pt,then these two intermediates perform rapidly dehydration to gain methylcyclohexene that is again hydrogenated to methylcyclohexane.Among these two pathways,DDO path is predominant.
Key words:  m-cresol    Pt/TiO2    hydrodeoxygenation    reaction pathways    incipient wetness impregnation
收稿日期:  2018-06-19      修回日期:  2019-01-16           出版日期:  2019-03-20
ZTFLH:  O643  
通讯作者:  赵翔宇(1994),男,硕士研究生,研究方向为绿色催化,通讯联系人,1766127144@qq.com。    E-mail:  1766127144@qq.com
引用本文:    
赵翔宇, 李梅. Pt/TiO2催化间甲基苯酚加氢脱氧路径探究[J]. 现代化工, 2019, 39(3): 181-184,186.
ZHAO Xiang-yu, LI Mei. Major reaction pathways for hydrodeoxygenation of m-cresol over Pt/TiO2 catalyst. Modern Chemical Industry, 2019, 39(3): 181-184,186.
链接本文:  
http://www.xdhg.com.cn/CN/10.16606/j.cnki.issn0253-4320.2019.03.040  或          http://www.xdhg.com.cn/CN/Y2019/V39/I3/181
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