李志勤,任枭雄,王元哲,李宗轩,马少博,邱泽刚.UIO-66热解ZrO2负载CoMoS对4-甲基酚的加氢脱氧性能[J].分子催化编辑部,2022,36(1):42-50
UIO-66热解ZrO2负载CoMoS对4-甲基酚的加氢脱氧性能
Catalytic Performance of UIO-66 Pyrolysis ZrO2 Supported CoMoS for Hydrodeoxygenation of 4-Methylphenol
投稿时间:2021-11-09  修订日期:2022-01-12
DOI:10.16084/j.issn1001-3555.2022.01.005
中文关键词:  UIO-66  氧化锆  加氢脱氧  4-甲基酚
英文关键词:UIO-66  zirconia  hydrodeoxygenation  4-methylphenol
基金项目:国家自然科学基金(21878243),省部共建煤炭高效利用与绿色化工国家重点实验室开放课题(2022-K50)陕西省重点研发计划(2022GY-153)
作者单位E-mail
李志勤 西安石油大学, 陕西 西安 710065  
任枭雄 西安石油大学, 陕西 西安 710065  
王元哲 西安石油大学, 陕西 西安 710065  
李宗轩 西安石油大学, 陕西 西安 710065  
马少博 西安石油大学, 陕西 西安 710065  
邱泽刚 西安石油大学, 陕西 西安 710065 qiuzegang@xsyu.edu.cn 
摘要点击次数: 13
全文下载次数: 21
中文摘要:
      以金属有机骨架材料UIO-66热解制备了具有片层簇状结构ZrO2.UIO-66热解条件影响CoMoS/ZrO2的晶相、表面原子含量、形貌以及比表面积(可达117.7 m2/g).随着热解温度升高,ZrO2晶相呈现由四方相向单斜相的转化,表面Mo含量呈现先减小后增加的趋势,片层结构逐渐变短,而簇状结构则逐渐由蓬松变得致密,比表面积逐渐减小.热解温度为600℃时出现催化剂片层结构的坍塌聚集以及晶相的破坏.当UIO-66热解温度为500℃、热解时间为4 h时,CoMoS/ZrO2明显出现单斜相,表面Mo原子含量较高,片层结构较均一,此催化剂在4-甲基酚加氢脱氧中显示出较高的活性和对甲苯的选择性,4-甲基酚转化率达100%,甲苯的选择性达82%.
英文摘要:
      ZrO2 with lamellar cluster structure was synthesized by pyrolysis of metal-organic framework material UIO-66. The pyrolysis conditions of UIO-66 affected the crystal phase, surface atomic content, morphology and specific surface area of CoMoS/ZrO2(up to 117.7 m2/g). With the increase of pyrolysis temperature, the ZrO2 crystal phase changed from a tetragonal phase to a monoclinic phase, the surface Mo content showed a trend of first decreasing and then increasing, the lamellar structure gradually became shorter, the cluster structure gradually changed from fluffy to dense, and the specific surface area gradually decreased. When the pyrolysis temperature was 600℃, the collapse and aggregation of catalyst lamellar structure, and the destruction of crystal phase occurred. When the pyrolysis temperature was 500℃ and time was 4 h, the monoclinic phase obviously appeared in the CoMoS/ZrO2 catalyst. The surface Mo atom content was relatively high, and the lamellar structure was relatively uniform. CoMoS/ZrO2 showed high activity and selectivity for toluene in the hydrodeoxygenation of 4-methylphenol, with the conversion of 4-methylphenol reaching 100% and the selectivity for toluene reaching 82%.
HTML  查看全文  查看/发表评论  下载PDF阅读器