Catalytic activity of Au/Fe-PILC and Au/Fe-oxide catalysts for catalytic combustion of formaldehyde

摘要：

Iron polymeric hydroxygroups pillared clays (Fe-PILC) were prepared by Na+-montmorillonite with iron pillaring agent.2.01Au/Fe-PILC catalyst was obtained by deposited-precipitation (DP) method.2.52Au/Fe-oxide catalyst was prepared by co-precipitation method.The catalytic activity of these catalysts was measured by catalytic combustion of formaldehyde.The catalyst of 2.01Au/Fe-PILC exhibits the high catalytic activity.The catalytic combustion reaction of formaldehyde proceeds at considerable rates at 20 ℃ and complete burn-off of formaldehyde is achieved at 120 ℃.The structure of catalysts,the valence state of gold and the size of gold particles were investigated by means of X-ray powder diffractometry,X-ray photoelectron spectroscopy and transmission electron microscopy.The results show that gold atoms with partially positive charge exist in the catalyst and play an important role in the catalytic activity.In addition,nano-sized,well-dispersed gold particles and good adsorption properties of support are necessary to obtain high activity Au catalysts for catalytic combustion of formaldehyde.

关键词： Au/Fe-PILC catalyst catalytic combustion of formaldehyde gold with positive charge gold nanocrystals

作者: LI Chang-yan SHEN Yue-nian HU Rui-sheng LI Pei-pei ZHANG Jun

作者单位: College of Chemistry and Chemical Engineering,Inner Mongolia University,Huhhot 010021,China Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730050,China

会议类型: 国际会议

会议名称: 2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)

会议地点: 长沙

会议语种:英文

在线出版日期: 2007-11-28（万方平台首次上网日期，不代表论文的发表时间）