文献类型：期刊文献

中文题名：Synthesis and characterization of aluminum and Al/REE pillared clays and supported palladium catalysts for benzene oxidation

英文题名：Synthesis and characterization of aluminum and Al/REE pillared clays and supported palladium catalysts for benzene oxidation

作者：Zuo Shufeng[1];Zhou Renxian[2];Qi Chenze[1]

机构：[1]Shaoxing Univ, Inst Appl Chem, Shaoxing 312000, Peoples R China;[2]Zhejiang Univ, Inst Catalysis, Hangzhou 310028, Zhejiang, Peoples R China

年份：2011

卷号：29

期号：1

起止页码：52

中文期刊名：稀土学报：英文版

外文期刊名：JOURNAL OF RARE EARTHS

收录：SCI-EXPANDED(收录号：WOS:000287021900011)、CSTPCD、、EI(收录号：20110713659104)、Scopus(收录号：2-s2.0-79751505902)、CSCD2011_2012、WOS、CSCD

基金：Project supported by the Ministry of Science and Technology of China (2004 CB719504) and the National Natural Science Foundation of China (20577043)

语种：英文

中文关键词：钯催化剂;稀土元素;柱撑粘土;铝合金;苯氧化;挥发性有机化合物;表征;高分辨透射电子显微镜

外文关键词：pillared clays; porous materials; benzene; catalytic oxidation; rare earths

中文摘要：Volatile organic compounds (VOCs) are considered as a major pollutant in indoor and outdoor air.More stringent environmental regulations have been implemented in order to reduce the VOC emissions.One of the techniques available for destructive removal of VOCs is catalytic oxidation.In the present work,Al/Rare Earths (REE: Y,Ce,La,Pr and Nd) pillared clays (PILCs) were used to support 0.2 wt.% of palladium for the complete oxidation of low concentration of benzene.The supports and catalysts were characterized by XRD,N2 adsorp-tion/desorption,FTIR spectroscopy,HRTEM and H2-TPR techniques.The results indicated that after Al and Al/REE pillaring,the basal spac-ing,SBET,Amic and Vmic of Al and AlREE-PILC had a considerable increase compared with those of Na-mmt.Activity tests of deep oxidation of benzene showed that the catalytic activity of Pd catalysts supported on Al and AlREE-PILC were much higher than that on initial clays,which was due to the fact that optimized structure of PILCs,such as large basal spacing,high SBET and porosity,improved Pd dispersion and increased the active sites of Pd.Especially for Pd/AlCe-PILC,the temperature of complete oxidation was about 280 oC,exhibiting the highest catalytic activity.

外文摘要：Volatile organic compounds (VOCs) are considered as a major pollutant in indoor and outdoor air. More stringent environmental regulations have been implemented in order to reduce the VOC emissions. One of the techniques available for destructive removal of VOCs is catalytic oxidation. In the present work, Al/Rare Earths (REE: Y, Ce, La, Pr and Nd) pillared clays (PILCs) were used to support 0.2 wt.% of palladium for the complete oxidation of low concentration of benzene. The supports and catalysts were characterized by XRD, N-2 adsorption/desorption, FTIR spectroscopy, HRTEM and H-2-TPR techniques. The results indicated that after Al and Al/REE pillaring, the basal spacing, S-BET, A(mic) and V-mic of Al and AlREE-PILC had a considerable increase compared with those of Na-mmt. Activity tests of deep oxidation of benzene showed that the catalytic activity of Pd catalysts supported on Al and AlREE-PILC were much higher than that on initial clays, which was due to the fact that optimized structure of PILCs, such as large basal spacing, high S-BET and porosity, improved Pd dispersion and increased the active sites of Pd. Especially for Pd/AlCe-PILC, the temperature of complete oxidation was about 280 degrees C, exhibiting the highest catalytic activity.