首页  课题组概况  研究方向  研究成果  成员介绍  实验设备  组内活动  合作交流  联系我们 
站内搜索:
新闻动态

祝贺贺雷老师的文章被 ACS Catalysi...
祝贺程世群等同学的文章被 Chinese ...
祝贺董灵玉等同学的文章被 Journal ...
祝贺侯璐等同学的文章被 ACS Centra...
祝贺刘占凯等同学的文章被 Angewand...
祝贺夏吉利等同学的文章被 Advanced...
祝贺原亚飞、王永胜等同学的文章被 ...

首页
您的位置: 首页>>正文

祝贺闫冰等同学的文章被 Chin. J. Catal. 接受发表!

2021年06月15日 14:53  点击:[]


祝贺闫冰等同学的文章

Electrospinning synthesis of porous boron‐doped silica nanofibers for oxidative dehydrogenation of light alkanes”

Chin. J. Catal. 接受发表!

Bing Yan, Wen‐Duo Lu, Jian Sheng, Wen‐Cui Li, Ding Ding, An‐Hui Lu *, Electrospinning synthesis of porous boron‐doped silica nanofibers for oxidative dehydrogenation of light alkanes. Chin. J. Catal., 2021,42: 1782-1789. DOI:10.1016/S1872-2067(21)63809-3.[DOWNLOAD]


Abstract

The discovery of the high activity and selectivity of boron-based catalysts for oxidative dehydrogenation (ODH) of alkanes to olefins has attracted significant attention in the exploration of a new method for the synthesis of highly active and selective catalysts. Herein, we describe the synthesis of porous boron-doped silica nanofibers (PBSNs) 100-150 nm in diameter by electrospinning and the study of their catalytic performance. The electrospinning synthesis of the catalyst ensures the uniform dispersion and stability of the boron species on the open silica fiber framework. The one-dimensional nanofibers with open pore structures not only prevented diffusion limitation but so guaranteed high catalytic activity at high weight hourly space velocity (WHSV) in the ODH of alkanes. Compared to other supported boron oxide catalysts, PBSN catalysts showed higher olefin selectivity and stability. The presence of Si-OH groups in silica-supported boron catalysts may cause low propylene selectivity during the ODH of propane. When the ODH conversion of ethane reached 44.3%, the selectivity and productivity of ethylene were 84% and 44.2% gcat-1 s-1, respectively. In the case of propane ODH, the conversion, selectivity of olefins, and productivity of propylene are 19.2%, 90%, and 76.6 μmol gcat-1 s-1, respectively. No significant variations in the conversion and product selectivity occurred during 20 h of operation at a high WHSV of 84.6 h-1. Transient analysis and kinetic experiments indicated that the activation of O2 was influenced by alkanes during the ODH reaction.


上一条:祝贺原亚飞、王永胜等同学的文章被 Angewandte 接受发表! 下一条:祝贺盛健等同学的文章被 J. Catal. 接受发表!

关闭

先进能源材料与催化团队 版权所有

本站部分内容来源于网络,版权归原作者或来源机构所有,如果涉及任何版权方面的问题请及时和我们联系,我们将尽快妥善处理!

推荐使用 Internet Explorer 浏览器浏览本站