CAS OpenIR  > 湿法冶金清洁生产技术国家工程实验室
Enhancement on Synthesis of Boehmite Through a Precarbonization-assisted Hydrogen Peroxide Route in Highly Alkaline Sodium Aluminate Solutions
Cai Weiquan1; Li Huiquan2; Zhang Guangxu1; Cai, WQ
2010-06-01
Source PublicationCHINESE JOURNAL OF CHEMICAL ENGINEERING
ISSN1004-9541
Volume18Issue:3Pages:500-505
AbstractHydrogen 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.
KeywordBoehmite Sodium Aluminate Solution Hydrogen Peroxide Precarbonization
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
Language英语
WOS KeywordHOLLOW MICROSPHERES ; BED REACTOR ; SURFACE ; PRECIPITATION ; PSEUDOBOEHMITE ; TRIHYDROXIDE ; DEHYDRATION ; GAMMA-AL2O3 ; POWDERS ; GROWTH
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000279658200019
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6135
Collection湿法冶金清洁生产技术国家工程实验室
Corresponding AuthorCai, WQ
Affiliation1.Wuhan Univ Technol, Sch Chem Engn, Wuhan 430070, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Cai Weiquan,Li Huiquan,Zhang Guangxu,et al. 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,&Cai, WQ.(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.
Files in This Item:
File Name/Size DocType Version Access License
20131118-1231-复件 1-s(402KB) 限制开放CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Cai Weiquan]'s Articles
[Li Huiquan]'s Articles
[Zhang Guangxu]'s Articles
Baidu academic
Similar articles in Baidu academic
[Cai Weiquan]'s Articles
[Li Huiquan]'s Articles
[Zhang Guangxu]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Cai Weiquan]'s Articles
[Li Huiquan]'s Articles
[Zhang Guangxu]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.