厦门大学学报（自然科学版）2017，Vol.56Issue(1)：42-47,6.DOI:10.6043/j.issn.0438-0479.201601039
原位还原制备Au-P/SiO2催化剂及其催化性能
Au-P/SiO2 Prepared with In situ Reduction and Its Catalytic Performance
摘要
Abstract
Formic acid decomposition is an effective way to solve energy problem.Compared with Pd catalysts,Au catalysts have bet-ter anti-inactivation ability.In this article,Au-P/SiO2 catalysts were prepared with in situ reduction using NaH2 PO2 .The catalysts were characterized by X-ray diffraction,transmission electron microscope,X-ray photoelectron spectroscopy,and catalytic perform-ances of the catalysts were tested through catalytic decomposition of formic acid.The results of the catalyst characterization demon-strated that with this method,the Au particles (3 nm)highly dispersed on the surface of SiO2 ,and some P entered into the crystal lattice of Au,which contributed the formation of Au-P compound and changed the electrical property of Au.Meanwhile,in the process of reaction,PⅢ appeared,and it was oxidized into PⅤ by Auδ+ to form gold phosphate with acid-base properties.For the reasons a-bove,Au-P/SiO2 is more active than Au/SiO2 .In 363 K,4 mol/L formic acid solution,the conversion rate of formic acid reached 51% over Au-P/SiO2 ,which is 4 times of Au/SiO2 .关键词
次亚磷酸钠/Au-P复合物/磷酸金/甲酸分解Key words
sodium phosphinate/Au-P compound/gold phosphate/formic acid decomposition分类
化学化工引用本文复制引用
郑潇潇,谢婷,肖玥,张鸿斌,张来英,李海燕..原位还原制备Au-P/SiO2催化剂及其催化性能[J].厦门大学学报（自然科学版）,2017,56(1):42-47,6.基金项目
国家重点基础研究发展计划(973计划)项目(2011CBA00500) （973计划）
福建省自然科学基金(E0510001) （E0510001）
