Synthesis, characterization and catalytic applications of mesoporous gamma-alumina from boehmite sol
文献类型：期刊论文
| 作者 | Liu, Qian1; Wang, Aiqin1; Wang, Xuehai1,2; Gao, Peng1,2; Wang, Xiaodong1; Zhang, Tao1 |
| 刊名 | microporous and mesoporous materials
 |
| 出版日期 | 2008-04-15 |
| 卷号 | 111期号:1-3页码:323-333 |
| 关键词 | mesoporous gamma-alumina boehmite sol catalyst support SO2 reduction by CO methane combustion |
| 英文摘要 | in this study, boehmite sols were used as aluminum precursors for preparing mesoporous alumina (ma) having crystalline framework walls in the presence of non-ionic surfactants as structure directing agents. nitrogen physisorption showed that aluminas prepared in this way displayed very rich porosities with large mesopores, and both the pore volumes and the pore sizes increased with the surfactant concentration. the improved textural parameters in the samples should be attributed to the three-dimensional interconnected scaffold-like channels, which were formed by randomly ordered stacking and condensing of rigid boehmite nanoparticles with the aid of the surfactant. tem observations revealed that the precursor morphology had an important effect on the textural properties of the mesoporous alumina. the sample with a corrugated platelet-like morphology exhibited a large surface area of 463 m(2)/g, which was reduced to 81 m(2)/g after calcination at 1200 degrees c, indicating a strong resistance to sintering. this material, with its improved textural properties, crystalline framework walls and high thermal stability, not only could increase the dispersion of the active catalytic species, but also could enhance the diffusion efficiency and mass transfer of reactant molecules when employed as catalyst supports. as examples, our ma samples demonstrated a remarkable enhancement in the catalytic performances for both reactions of so2 catalytic reduction by co and catalytic combustion of methane. (c) 2007 elsevier inc. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, applied ; chemistry, physical ; nanoscience & nanotechnology ; materials science, multidisciplinary |
| 研究领域[WOS] | chemistry ; science & technology - other topics ; materials science |
| 关键词[WOS] | molecular-sieves ; methane ; palladium ; combustion ; surfactant ; reduction ; oxidation ; acid ; co ; route |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000255847100044 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/141180]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Qian,Wang, Aiqin,Wang, Xuehai,et al. Synthesis, characterization and catalytic applications of mesoporous gamma-alumina from boehmite sol[J]. microporous and mesoporous materials,2008,111(1-3):323-333. |
| APA | Liu, Qian,Wang, Aiqin,Wang, Xuehai,Gao, Peng,Wang, Xiaodong,&Zhang, Tao.(2008).Synthesis, characterization and catalytic applications of mesoporous gamma-alumina from boehmite sol.microporous and mesoporous materials,111(1-3),323-333. |
| MLA | Liu, Qian,et al."Synthesis, characterization and catalytic applications of mesoporous gamma-alumina from boehmite sol".microporous and mesoporous materials 111.1-3(2008):323-333. |
入库方式： OAI收割
来源：大连化学物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。