文献类型：期刊文献

英文题名：Efficient Hydrolysis of Sodium Borohydride by Co-B Supported on Nitrogen-doped Carbon

作者：Xu, Jianan[1];Du, Xuexun[1];Wei, Qinglian[1];Huang, Yongmin[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Specially Funct Polymer Mat & Related Tec, Shanghai 200237, Peoples R China

年份：2020

卷号：5

期号：22

起止页码：6683

外文期刊名：CHEMISTRYSELECT

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000540615000022)】；

基金：This research is based on work supported by the National Natural Science Foundation of China (NO. 21476071) and Research Centre of Analysis and Test of ECUST.

语种：英文

外文关键词：heterogeneous catalysis; hydrolysis; nitrogen-doped carbon; catalytic activity

摘要：In this work, dehydrogenation of NaBH(4)in alkaline solutions was catalyzed by amorphous Co-B catalysts supported on nitrogen doped carbon (N-C) that is rarely utilized in this field. The physicochemical properties of the as-prepared catalysts were characterized by X-ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), High Resolution Transmission Electron Microscopy (HRTEM), X-ray Photoelectron Spectroscopy (XPS), Raman Spectroscopy and BET (Brunner-Emmet-Teller) measurements. Among all the catalysts made in this paper, Co-B/N-C-700 exhibited best activity, which is likely to be attributed to the possession of more metal Co as active sites. The hydrogen generation rate (HGR) reached 2649 ml H-2 min(-1)g(cat)(-1)in 10 wt. % NaOH + 10 wt. % NaBH(4)solution at 30 degrees C. The value of activation energy is 37.57 kJ mol(-1)and compares favorably with values of some previous reports. Besides, influences of NaOH concentration, NaBH(4)concentration, temperature, recycle times and amount of catalyst for the catalytic performance of Co-B/N-C-700 were also investigated to reflect more on hydrolysis of sodium borohydride.