| 限域于SBA-15孔道内的活性相聚集形态 |
| |
| 引用本文： | 李常丽,张庆红,王野,万惠霖.限域于SBA-15孔道内的活性相聚集形态[J].催化学报,2008,29(1):37-40. |
| |
| 作者姓名： | 李常丽 张庆红 王野 万惠霖 |
| |
| 作者单位： | 厦门大学化学化工学院固体表面物理化学国家重点实验室,福建厦门,361005 |
| |
| 基金项目： | 科技部973项目(2005CB221408)，福建省新世纪高等学校优秀人才支持计划，教育部留学回国人员启动基金 |
| |
| 摘 要： | 针对Pd/SBA-15和MoO3/SBA-15两类催化剂样品,使用N2物理吸附手段对比研究了限域于介孔SBA-15分子筛孔道内活性相Pd与MoO3的聚集形态.结果表明,金属Pd以颗粒状形态分布在SBA-15分子筛孔道内,氧化物MoO3则以层状形态存在.并用高分辨透射电镜验证了此分析结果.
|
| 关 键 词： | 钯 三氧化钼 活性相 聚集形态 SBA-15分子筛 吸附-脱附等温线 苯甲醇 氧化 |
| 文章编号： | 0253-9837（2008）01-0037-04 |
| 收稿时间： | 2007-06-25 |
| 修稿时间： | 2007年6月25日 |
Assembling Forms of Active Phases Confined within SBA-15 Channels |
| |
| LI Changli,ZHANG Qinghong,WANG Ye,WAN Huilin.Assembling Forms of Active Phases Confined within SBA-15 Channels[J].Chinese Journal of Catalysis,2008,29(1):37-40. |
| |
| Authors: | LI Changli ZHANG Qinghong WANG Ye WAN Huilin |
| |
| Abstract: | The assembling forms of active phases in Pd/SBA-15(ad) and MoO3/SBA-15 catalyst samples, prepared via adsorption-reduction and impregnation-reduction, respectively, were characterized by N2 physisorption measurement. Based on N2 adsorption-desorption isotherms, it was speculated that the palladium species in Pd/SBA-15(ad) exist as nanoparticles, whereas the MoO3 species in MoO3/SBA-15 are layered dispersed on the wall within the SBA-15 channels. These speculations were further confirmed by HR-TEM observation. The SBA-15 confined uniform Pd nanoparticles were efficient for solvent-free aerobic oxidation of benzyl alcohol. |
| |
| Keywords: | palladium molybdenum trioxide active phase assembling form SBA-15 zeolite adsorption-desorption isotherm benzyl alcohol oxidation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
