Evolution of pore and surface characteristics of silica xerogels during calcining
文献类型：期刊论文
| 作者 | Huang, WL; Cui, SH; Liang, KM; Yuan, ZF; Gu, SR |
| 刊名 | JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
 |
| 出版日期 | 2002-04-01 |
| 卷号 | 63期号:4页码:645-650 |
| ISSN号 | 0022-3697 |
| 关键词 | oxides microporous materials sol-gel growth electron microscopy |
| 其他题名 | J. Phys. Chem. Solids |
| 中文摘要 | This paper has investigated the effect of calcining temperature (600-1000degreesC) on the mesopore, structure and surface fractal dimension of silica xerogels derived from two-step acid-base-catalyzed TEOS (tetraethyl orthosilicate) systems. Two base contents were adopted in the base step. FE-SEM (field emission gun-scanning electron microscopy) observation and XRD (X-ray diffraction) analysis indicate that gel coarsening, agglomeration and sintering occurred successively with increasing temperature, and those prepared with higher base content exhibit easier agglomeration, lower sintering temperature and weaker crystallizability. Percent mesoporosity and surface fractal dimensions evaluation via image analysis methods shows that the mesoporosity of those prepared with lower base content increases below 700degreesC and decline at higher temperatures, while the surface fractal dimension appears to decrease above 800degreesC. (C) 2002 Elsevier Science Ltd. All rights reserved. |
| 英文摘要 | This paper has investigated the effect of calcining temperature (600-1000degreesC) on the mesopore, structure and surface fractal dimension of silica xerogels derived from two-step acid-base-catalyzed TEOS (tetraethyl orthosilicate) systems. Two base contents were adopted in the base step. FE-SEM (field emission gun-scanning electron microscopy) observation and XRD (X-ray diffraction) analysis indicate that gel coarsening, agglomeration and sintering occurred successively with increasing temperature, and those prepared with higher base content exhibit easier agglomeration, lower sintering temperature and weaker crystallizability. Percent mesoporosity and surface fractal dimensions evaluation via image analysis methods shows that the mesoporosity of those prepared with lower base content increases below 700degreesC and decline at higher temperatures, while the surface fractal dimension appears to decrease above 800degreesC. (C) 2002 Elsevier Science Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Multidisciplinary ; Physics, Condensed Matter |
| 研究领域[WOS] | Chemistry ; Physics |
| 关键词[WOS] | SOL-GEL PROCESS ; FRACTAL DIMENSIONS ; SELF-SIMILARITY ; AEROGELS ; HYDROLYSIS ; ADSORPTION |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000174453800016 |
| 公开日期 | 2013-11-12 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/5604]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Multiphase React Lab, Beijing 100080, Peoples R China 2.Dist Dongchang, Tonghua 134000, Jilin Province, Peoples R China 3.Tsing Hua Univ, Dept Mat Sci & Engn, Beijing 100084, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, WL,Cui, SH,Liang, KM,et al. Evolution of pore and surface characteristics of silica xerogels during calcining[J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS,2002,63(4):645-650. |
| APA | Huang, WL,Cui, SH,Liang, KM,Yuan, ZF,&Gu, SR.(2002).Evolution of pore and surface characteristics of silica xerogels during calcining.JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS,63(4),645-650. |
| MLA | Huang, WL,et al."Evolution of pore and surface characteristics of silica xerogels during calcining".JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS 63.4(2002):645-650. |
入库方式： OAI收割
来源：过程工程研究所
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。