CAS OpenIR  > 湿法冶金清洁生产技术国家工程实验室
In situ high-temperature X-ray diffraction studies of reduction of K2CrO4 and the formation of KxCrOy compounds
Liang, Shu-ting1,2; Zhang, Hong-ling1,2; Luo, Min-ting1,2; Bai, Yu-lan3; Xu, Hong-bin1,2; Zhang, Yi1,2
2017-09-01
Source PublicationPOWDER DIFFRACTION
ISSN0885-7156
Volume32Issue:3Pages:168-174
Abstract

In this work, the reduction mechanism of potassium chromate (K2CrO4) was investigated via in situ high-temperature X-ray diffraction coupled with Fourier transform infrared spectroscopy. During the hydrogen reduction of K2CrO4, the formation of K3CrO4, KCrO2, and KxCrO2 were detected for the first time. The study discovered that K2CrO4 was firstly reduced to K3CrO4 and an amorphous Cr(III) intermediate product at low temperature (400-500 degrees C). Moreover, the K3CrO4 was the only crystalline material at this stage. As the temperature increased, a stabilized amorphous CrOOH was formed. At a high temperature (550-700 degrees C), KCrO2 was generated. Interestingly, a portion of KCrO2 was spontaneously decomposed during the hydrogen reduction, accompanying by the formation of K0.7CrO2. Finally, the results clearly illustrated the reduction mechanism of K2CrO4: K2CrO4 -> K3CrO4 amorphous intermediate KCrO2. (C) 2017 International Centre for Diffraction Data.

KeywordIn Situ Xrd In Situ Ftir K2cro4 Reduction Mechanism Activated Kxcroy
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1017/S0885715617000690
Indexed BySCI
Language英语
WOS KeywordCr2o3 Nanoparticles ; Green Pigment ; Chromium ; Spectroscopy ; Chromates ; Spectra ; Oxide
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Characterization & Testing
Funding OrganizationNational Natural Science Foundation of China(11204304) ; National Basic Research Program (973 Program) of China(2013CB632600) ; National High-tech Research and Development Program of China(2011AA060702)
WOS IDWOS:000425747100002
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/24042
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
3.Qingdao Agr Univ, Coll Chem & Pharmaceut Sci, Qingdao 266109, Peoples R China
Recommended Citation
GB/T 7714
Liang, Shu-ting,Zhang, Hong-ling,Luo, Min-ting,et al. In situ high-temperature X-ray diffraction studies of reduction of K2CrO4 and the formation of KxCrOy compounds[J]. POWDER DIFFRACTION,2017,32(3):168-174.
APA Liang, Shu-ting,Zhang, Hong-ling,Luo, Min-ting,Bai, Yu-lan,Xu, Hong-bin,&Zhang, Yi.(2017).In situ high-temperature X-ray diffraction studies of reduction of K2CrO4 and the formation of KxCrOy compounds.POWDER DIFFRACTION,32(3),168-174.
MLA Liang, Shu-ting,et al."In situ high-temperature X-ray diffraction studies of reduction of K2CrO4 and the formation of KxCrOy compounds".POWDER DIFFRACTION 32.3(2017):168-174.
Files in This Item:
File Name/Size DocType Version Access License
In situ high-tempera(4064KB)期刊论文出版稿限制开放CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Liang, Shu-ting]'s Articles
[Zhang, Hong-ling]'s Articles
[Luo, Min-ting]'s Articles
Baidu academic
Similar articles in Baidu academic
[Liang, Shu-ting]'s Articles
[Zhang, Hong-ling]'s Articles
[Luo, Min-ting]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Liang, Shu-ting]'s Articles
[Zhang, Hong-ling]'s Articles
[Luo, Min-ting]'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.