Effect of pore size distribution of carbon-covered alumina on the preparation of submicrometer alpha-alumina powders
文献类型：期刊论文
| 作者 | Wang, Pei; Lin, Li; Zhu, Yuexiang; Xie, Youchang |
| 刊名 | JOURNAL OF THE AMERICAN CERAMIC SOCIETY
 |
| 出版日期 | 2007-02-01 |
| 卷号 | 90期号:2页码:402-406 |
| ISSN号 | 0002-7820 |
| DOI | 10.1111/j.1551-2916.2006.01417.x |
| 英文摘要 | Calcining carbon-covered alumina (CCA) samples at 800 degrees C in an oxygen flow is an efficient method to prepare alpha-alumina powders. It is found that the pore size distribution of CCA samples, which depends on the carbon content and the pore size distribution of the precursor alumina used, is one of the key factors for the total conversion of gamma-alumina to alpha-alumina and the complete combustion of carbon in the pores of alumina. No matter how high the carbon content, total conversion does not occur for CCA samples prepared from alumina possessing the most probable pore size of about 5.2 nm. Using gamma-alumina with the most probable pore size of 6.1 nm as the precursor of CCA samples, total transformation occurs when the carbon content of CCA ranges from 11.9 to 17.3 wt%, but the color of as-prepared alpha-alumina is not pure white but light gray. Polyethylene glycol (PEG 20 000), added to the sucrose/gamma-alumina system, can expand the pores of CCA samples after carbonization, and calcining of thus-prepared CCA results in a complete transformation of gamma-alumina to pure white alpha-alumina with a particle size of about 1 mu m when the carbon content of CCA is between 6 and 19 wt%. |
| 语种 | 英语 |
| WOS记录号 | WOS:000243754700009 |
| 出版者 | BLACKWELL PUBLISHING |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/62691]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zhu, Yuexiang |
| 作者单位 | Peking Univ, Natl Lab Mol Sci, State Key Lab Struct Chem Unstable & Stable Speci, Coll Chem & Mol Engn, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Pei,Lin, Li,Zhu, Yuexiang,et al. Effect of pore size distribution of carbon-covered alumina on the preparation of submicrometer alpha-alumina powders[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2007,90(2):402-406. |
| APA | Wang, Pei,Lin, Li,Zhu, Yuexiang,&Xie, Youchang.(2007).Effect of pore size distribution of carbon-covered alumina on the preparation of submicrometer alpha-alumina powders.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,90(2),402-406. |
| MLA | Wang, Pei,et al."Effect of pore size distribution of carbon-covered alumina on the preparation of submicrometer alpha-alumina powders".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 90.2(2007):402-406. |
入库方式： OAI收割
来源：化学研究所
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