文献类型：期刊文献

中文题名：中空碳化硅微球的制备及其在催化NaBH_4制氢中的应用

英文题名：Preparation of Hollow Silicon Carbide Microspheres and Their Application in Catalysis of Hydrogen Production from NaBH_4

作者：张建强[1];牟广宇[1];魏清莲[1];黄永民[1]

机构：[1]华东理工大学应用化学研究所,上海200237

年份：2015

卷号：41

期号：5

起止页码：636

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心2014】；CSCD:【CSCD2015_2016】；

基金：化学工程联合国家重点实验室开放课题(SKL-ChE-13C01)

语种：中文

中文关键词：酵母菌;酚醛树脂;中空碳化硅微球;Ru/SiC催化剂;NaBH4

外文关键词：yeast ; phenolic resin; hollow SiC microspheres; Ru/SiC catalyst ; NaBH4

摘要：首先利用酵母菌为模板合成空心的椭球状二氧化硅,以它为硅源和模板,将作为碳源的酚醛树脂包覆在二氧化硅表面,经过碳热还原反应制备出中空碳化硅微球。利用X射线衍射(XRD)、氮气吸脱附(BET)、扫描电镜(SEM)和傅里叶变换红外(FT-IR)等测试手段对产物进行组分、形貌和结构表征,同时考察了反应温度、碳与硅物质的量之比(nC/nSi)对产物比表面积的影响,并对产物形成机理进行了探讨。然后以SiC作载体制备了Ru/SiC催化剂,实验表明该催化剂用于硼氢化钠水解制氢反应时具有较好的催化活性,最大产氢速率可达2 280mL/(g·min)。
Hollow silicon carbide（SiC） microspheres were prepared by carbothermal reduction method, in which ellipsoidal silica and phenolic resin were used as silica and carbon precursors, respectively. The ellipsoidal silica microparticles were synthesized by TEOS hydrolysis with the yeasts as templates. The as-synthesized SiC was characterized by XRD, SEM, N2 absorption-desorption and FT-IR. The effects of the reaction temperature and nc/nSi on the surface area as well as the formation mechanism of SiC microspheres were investigated. Then the synthesized SiC was used as carrier of the Ru/ SiC catalyst for the sodium borohydride hydrolysis reaction. Experimental results showed that the obtained catalyst possessed good catalytic activity and the maximum hydrogen production rate was up to 2 280 mL/（g·min）.