Influences of processing techniques of the H2O2-precipitated pseudoboehmite on the structural and textural properties of gamma-Al2O3
文献类型：期刊论文
| 作者 | Cai, Weiquan; Li, Huiquan; Zhang, Yi |
| 刊名 | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
 |
| 出版日期 | 2007-03-01 |
| 卷号 | 295期号:1-3页码:185-192 |
| 关键词 | pseudoboehmite sodium aluminate solutions hydrogen peroxide processing technique |
| ISSN号 | 0927-7757 |
| 其他题名 | Colloid Surf. A-Physicochem. Eng. Asp. |
| 中文摘要 | Influences of three post-precipitation techniques, n-butanol azeotropic distillation, ethanol washing and water washing of the H2O2-precipitated pseudoboehmite (PB) from sodium aluminate (SA) solutions on the structural and textural properties of gamma-Al2O3 upon calcination were comparatively studied. The first two processing techniques not only yield folded and swollen sheet-like pseudoboehmite and gamma-Al2O3 nanofibres, but also increase their macro-mesopore volume and specific surface area significantly. The mechanisms for the formation of nanofibres and macro-mesopore volume induced by butoxy group or ethoxy group were also proposed. In contrast, n-butanol azeotropic distillation is more competitive for widening pores and preventing them from collapsing due to its larger n-butanol molecules, longer butoxy groups and the more complete replacement of residual water in the precipitate. The gamma-Al2O3 from azeotropic distillation exhibits more excellent macro-mesostructure with high surface area (about 4.21 cm(3)/g and 396.3 m(2)/g) than those of the gamma-Al2O3 from ethanol washing (about 2.23 cm(3)/g and 222.0 m(2)/g). (c) 2006 Elsevier B.V. All rights reserved. |
| 英文摘要 | Influences of three post-precipitation techniques, n-butanol azeotropic distillation, ethanol washing and water washing of the H2O2-precipitated pseudoboehmite (PB) from sodium aluminate (SA) solutions on the structural and textural properties of gamma-Al2O3 upon calcination were comparatively studied. The first two processing techniques not only yield folded and swollen sheet-like pseudoboehmite and gamma-Al2O3 nanofibres, but also increase their macro-mesopore volume and specific surface area significantly. The mechanisms for the formation of nanofibres and macro-mesopore volume induced by butoxy group or ethoxy group were also proposed. In contrast, n-butanol azeotropic distillation is more competitive for widening pores and preventing them from collapsing due to its larger n-butanol molecules, longer butoxy groups and the more complete replacement of residual water in the precipitate. The gamma-Al2O3 from azeotropic distillation exhibits more excellent macro-mesostructure with high surface area (about 4.21 cm(3)/g and 396.3 m(2)/g) than those of the gamma-Al2O3 from ethanol washing (about 2.23 cm(3)/g and 222.0 m(2)/g). (c) 2006 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Physical |
| 研究领域[WOS] | Chemistry |
| 关键词[WOS] | BOEHMITE ; ALUMINA ; POWDERS ; FIBERS ; WATER |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000244737700029 |
| 公开日期 | 2013-10-15 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/3286]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Wuhan Univ Technol, Sch Chem Engn, Wuhan 430070, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cai, Weiquan,Li, Huiquan,Zhang, Yi. Influences of processing techniques of the H2O2-precipitated pseudoboehmite on the structural and textural properties of gamma-Al2O3[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2007,295(1-3):185-192. |
| APA | Cai, Weiquan,Li, Huiquan,&Zhang, Yi.(2007).Influences of processing techniques of the H2O2-precipitated pseudoboehmite on the structural and textural properties of gamma-Al2O3.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,295(1-3),185-192. |
| MLA | Cai, Weiquan,et al."Influences of processing techniques of the H2O2-precipitated pseudoboehmite on the structural and textural properties of gamma-Al2O3".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 295.1-3(2007):185-192. |
入库方式： OAI收割
来源：过程工程研究所
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