| Thiourea-induced change of structure and color of brick-red palygorskite | |
| Department | 甘肃省黏土矿物应用重点实验室 |
| Zhang ZF (张志芳)1,2; Wang WB (王文波)1,3; Mu B (牟斌)1,3; Wang AQ (王爱勤)1,3 | |
| The second department | 功能复合材料组 |
| 2018 | |
| Source Publication | Clays and Clay Minerals
 |
| Volume | 66Issue:5Pages:403-414 |
| Abstract | Brick-red deposits with palygorskite (Pal) as the main ingredient are widely distributed in nature, but these have not been deployed at a large scale in industry because of their inherent deep colors. In the present study, the brick-red Pal deposit was treated hydrothermally in various reaction media including water, a urea solution, and a thiourea solution. The effects of these processes on the structure, physicochemical features, and color of Pal were studied intensively to understand the structure and composition of the brick-red Pal deposit and to lay a theoretical foundation for the extension of its industrial application. The changes in structural features after hydrothermal treatment were studied by Fourier-transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, magic-angle spinning nuclear magnetic resonance, and Mössbauer spectroscopy techniques. The results indicated that the color of brick-red Pal did not change after hydrothermal treatment in water or in a urea solution, and the color changed to gray-white after treatment in the thiourea solution. The rod-like crystal morphology of Pal was retained throughout the experiments and no significant change in the main associated minerals, including feldspar, muscovite, and quartz, was observed after hydrothermal treatment. The dissolution of associated hematite (α-Fe2 O3 ) and the reduction of Fe(III) species are the main reason for the change of Pal from brick-red to gray-white. |
| DOI | 10.1346/CCMN.2018.064091 |
| URL | 查看原文 |
| Indexed By | SCI |
| If | 1.825 |
| Language | 英语 |
| compositor | 第一作者单位 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/24366 |
| Collection | 甘肃省黏土矿物应用研究重点实验室 |
| Corresponding Author | Wang WB (王文波); Wang AQ (王爱勤) |
| Affiliation | 1.Key Laboratory of Clay Mineral Applied Research of Gansu Province, Center of Eco-material and Green Chemistry, Lanzhou 2.Center of Xuyi Palygorskite Applied Technology, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Xuyi 211700, P.R. China 3.University of the Chinese Academy of Sciences, Beijing, 100049, P.R. China |
| Recommended Citation GB/T 7714 | Zhang ZF ,Wang WB ,Mu B ,et al. Thiourea-induced change of structure and color of brick-red palygorskite[J]. Clays and Clay Minerals,2018,66(5):403-414. |
| APA | Zhang ZF ,Wang WB ,Mu B ,&Wang AQ .(2018).Thiourea-induced change of structure and color of brick-red palygorskite.Clays and Clay Minerals,66(5),403-414. |
| MLA | Zhang ZF ,et al."Thiourea-induced change of structure and color of brick-red palygorskite".Clays and Clay Minerals 66.5(2018):403-414. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Thiourea-Induced Cha（1235KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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