y Incorporation of Al and Na in Hydrothermally Synthesized Tobermorite
文献类型：期刊论文
| 作者 | Wang, Zehua1,2; Ma, Shuhua1; Zheng, Shili1; Wang, Xiaohui1 |
| 刊名 | JOURNAL OF THE AMERICAN CERAMIC SOCIETY
 |
| 出版日期 | 2017-02-01 |
| 卷号 | 100期号:2页码:792-799 |
| 关键词 | aluminosilicates calcium silicate hydrate sodium/sodium compounds |
| ISSN号 | 0002-7820 |
| 英文摘要 | Calcium silicate hydrate and its Al-substituted form synthesized by a hydrothermal process were investigated by X-ray diffraction, compositional analysis, and magic-angle spinning nuclear magnetic resonance (MAS NMR) spectroscopy, in order to determine the mechanism of Al and Na incorporation in the tobermorite structure with varying molar ratios of Ca/Si and Al/Si. At a high molar ratio of Ca/Si, the silicate chains of tobermorite are ruptured, the degree of polymerization of the silicate chains is lowered, and the high calcium concentration lowers the content of Na2O in the structure. Solid-state Si-29 and Al-27 MAS NMR spectroscopy confirm that all Al atoms were incorporated in the silicate chains of tobermorite. The tetrahedrally coordinated Al (Al(IV)) could either act as the bridging tetrahedron (Q(B)(2)) for the dreierketten chain of tobermorite, or be present in Q(3) sites that link two dreierketten chains together. Therefore, the degree of polymerization of the silicate chains of tobermorite is increased at high molar ratio of Al/Si. Furthermore, the greater charge deficit due to the replacement of Si4+ by Al3+ ions is compensated by increased adsorption or binding of Na+. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Materials Science, Ceramics |
| 研究领域[WOS] | Materials Science |
| 关键词[WOS] | C-S-H ; CALCIUM-SILICATE-HYDRATE ; NUCLEAR-MAGNETIC-RESONANCE ; ALUMINA FLY-ASH ; ALUMINOSILICATE-HYDRATE ; MAS NMR ; SUBSTITUTED TOBERMORITES ; CEMENT PASTES ; AL-27 ; SI-29 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000394545900040 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/22106]  |
| 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.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Zehua,Ma, Shuhua,Zheng, Shili,et al. y Incorporation of Al and Na in Hydrothermally Synthesized Tobermorite[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2017,100(2):792-799. |
| APA | Wang, Zehua,Ma, Shuhua,Zheng, Shili,&Wang, Xiaohui.(2017).y Incorporation of Al and Na in Hydrothermally Synthesized Tobermorite.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,100(2),792-799. |
| MLA | Wang, Zehua,et al."y Incorporation of Al and Na in Hydrothermally Synthesized Tobermorite".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 100.2(2017):792-799. |
入库方式： OAI收割
来源：过程工程研究所
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