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Formation of Cr(VI) compounds during the thermal decomposition of amorphous chromium hydroxide
Alternative TitleJ. Therm. Anal. Calorim.
Wei, Guangye1; Qu, Jingkui2; Qi, Tao2; Zheng, Yudong1; Guo, Qiang2
2014-08-01
Source PublicationJOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
ISSN1388-6150
Volume117Issue:2Pages:741-745
AbstractChromium hydroxide (CH) was prepared by the reduction of purified sodium chromate using starch. CH was then used to prepare chromium oxide (Cr2O3). Results of thermogravimetric, X-ray diffraction, Fourier transform infrared spectroscopy, and chemical analyses suggested that a small amount of the initial Cr(VI) content speeds up the oxidation and reduction reactions, thereby promoting the purity and crystallization of Cr2O3. Cr(VI) in CH induced the evolution of CH and the formation of Cr(VI) containing compounds including CrO3, NaCr(CrO4)(2), Cr3O8, and Cr5O12 at low sintering temperature. Furthermore, homogeneous Cr2O3 nanoparticles with 99 % purity and particle size of 50 nm were obtained.; Chromium hydroxide (CH) was prepared by the reduction of purified sodium chromate using starch. CH was then used to prepare chromium oxide (Cr2O3). Results of thermogravimetric, X-ray diffraction, Fourier transform infrared spectroscopy, and chemical analyses suggested that a small amount of the initial Cr(VI) content speeds up the oxidation and reduction reactions, thereby promoting the purity and crystallization of Cr2O3. Cr(VI) in CH induced the evolution of CH and the formation of Cr(VI) containing compounds including CrO3, NaCr(CrO4)(2), Cr3O8, and Cr5O12 at low sintering temperature. Furthermore, homogeneous Cr2O3 nanoparticles with 99 % purity and particle size of 50 nm were obtained.
KeywordChromium Hydroxide Thermal Decomposition Tg Ftir
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1007/s10973-014-3785-4
URL查看原文
Indexed BySCI
Language英语
WOS KeywordMAGNETIC-PROPERTIES ; CR2O3 ; NANOPARTICLES ; OXIDE
WOS Research AreaChemistry
WOS SubjectChemistry, Analytical ; Chemistry, Physical
WOS IDWOS:000339341300026
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Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/11552
Collection研究所(批量导入)
Affiliation1.Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Wei, Guangye,Qu, Jingkui,Qi, Tao,et al. Formation of Cr(VI) compounds during the thermal decomposition of amorphous chromium hydroxide[J]. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY,2014,117(2):741-745.
APA Wei, Guangye,Qu, Jingkui,Qi, Tao,Zheng, Yudong,&Guo, Qiang.(2014).Formation of Cr(VI) compounds during the thermal decomposition of amorphous chromium hydroxide.JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY,117(2),741-745.
MLA Wei, Guangye,et al."Formation of Cr(VI) compounds during the thermal decomposition of amorphous chromium hydroxide".JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY 117.2(2014):741-745.
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