Enhancement on Synthesis of Boehmite Through a Precarbonization-assisted Hydrogen Peroxide Route in Highly Alkaline Sodium Aluminate Solutions
文献类型：期刊论文
| 作者 | Cai Weiquan1; Li Huiquan2; Zhang Guangxu1 |
| 刊名 | CHINESE JOURNAL OF CHEMICAL ENGINEERING
 |
| 出版日期 | 2010-06-01 |
| 卷号 | 18期号:3页码:500-505 |
| 关键词 | boehmite sodium aluminate solution hydrogen peroxide precarbonization |
| ISSN号 | 1004-9541 |
| 通讯作者 | Cai, WQ |
| 英文摘要 | Hydrogen peroxide (H(2)O(2)) precipitation from sodium aluminate (SA) solution at close-ambient temperature is an efficient method to synthesize boehmite and its derived alumina with high surface area, but the precipitation yield of Al(2)O(3) is usually below 50% in highly alkaline SA solutions. Here the synthesis of boehmite is enhanced through a precarbonization-assisted H(2)O(2) route in highly alkaline SA solutions. It is found that the crystal structure of the precipitation product is evidently influenced by the precipitation conditions. As the precipitation temperature increases from 273 to 325 K, a small amount of gibbsite by-product is formed. As the aging temperature increases from 301 to 333 K, the crystallinity of boehmite decreases and part of the boehmite dissolves due to an increase in the pH value. Based on the above results, a precarbonization-assisted H(2)O(2) route is proposed to obtain pure boehmite with more complete recovery of Al(2)O(3) from highly alkaline SA solutions. The route includes a controllable precarbonization step of SA solutions with a molar ratio of Na(2)O to Al(2)O(3) higher than 2 : 1, followed by the H(2)O(2)-precipitated step with a molar ratio of H(2)O(2) to Al(2)O(3) less than 7 : 1. Because of its facile operation conditions, no extraneous impurity, time saving and a possible recycle of the filtrate, the route has great potential to be an alternative method for preparation of boehmite and its derived alumina. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Chemical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | HOLLOW MICROSPHERES ; BED REACTOR ; SURFACE ; PRECIPITATION ; PSEUDOBOEHMITE ; TRIHYDROXIDE ; DEHYDRATION ; GAMMA-AL2O3 ; POWDERS ; GROWTH |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000279658200019 |
| 公开日期 | 2013-11-18 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/6135]  |
| 专题 | 过程工程研究所_湿法冶金清洁生产技术国家工程实验室 |
| 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 Guangxu. Enhancement on Synthesis of Boehmite Through a Precarbonization-assisted Hydrogen Peroxide Route in Highly Alkaline Sodium Aluminate Solutions[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2010,18(3):500-505. |
| APA | Cai Weiquan,Li Huiquan,&Zhang Guangxu.(2010).Enhancement on Synthesis of Boehmite Through a Precarbonization-assisted Hydrogen Peroxide Route in Highly Alkaline Sodium Aluminate Solutions.CHINESE JOURNAL OF CHEMICAL ENGINEERING,18(3),500-505. |
| MLA | Cai Weiquan,et al."Enhancement on Synthesis of Boehmite Through a Precarbonization-assisted Hydrogen Peroxide Route in Highly Alkaline Sodium Aluminate Solutions".CHINESE JOURNAL OF CHEMICAL ENGINEERING 18.3(2010):500-505. |
入库方式： OAI收割
来源：过程工程研究所
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