Ammonia catalyzed hydrolysis-condensation kinetics of tetraethoxysilane/dimethyldiethoxysilane mixtures studied by Si-29 NMR and SAXS
文献类型：期刊论文
| 作者 | Xu, Y; Sun, XY; Wu, D ; Sun, YH; Yang, YX; Yuan, HZ; Deng, F; Wu, ZH; Wu ZH(吴忠华)
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| 刊名 | JOURNAL OF SOLUTION CHEMISTRY
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| 出版日期 | 2007 |
| 卷号 | 36期号:3页码:327-344 |
| 关键词 | reaction kinetics Si-29 NMR hydrolysis condensation small angle X-ray scattering tetraethoxysilane (TEOS) dimethyldiethoxysilane (DDS) |
| 通讯作者 | Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China ; Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Lab Synchrotron Radiat, Beijing 100039, Peoples R China |
| 英文摘要 | In-situ Si-29 liquid-state nuclear magnetic resonance (NMR) was used to investigate the ammonia catalyzed hydrolysis and condensation of the mixed systems of tetraethoxysilane (TEOS) and dimethyldiethoxysilane (DDS) dissolved in methanol. With ammonia catalysis, the hydrolysis reaction orders for TEOS and DDS in the mixed systems remained first order, which is similar to that observed for their corresponding single silane component precursor systems. The hydrolysis rate constant for TEOS in the mixed systems was larger than that of TEOS in the single silane component precursor systems. Meanwhile, the hydrolysis rate constants of DDS in the mixed precursor systems were smaller than those of DDS in the single silane component precursor systems. The hydrolysis and condensation kinetics showed more compatible hydrolysis-condensation relative rates between TEOS and DDS, which remarkably affected the final microstructure of the resulting silica particles. Small angle X-ray scattering (SAXS) experiments showed a typical double fractal structure in the particulate networks. |
| 学科主题 | Chemistry |
| 类目[WOS] | Chemistry, Physical |
| 研究领域[WOS] | Chemistry |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000245363100005 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/236995]  |
| 专题 | 高能物理研究所_多学科研究中心 高能物理研究所_实验物理中心 高能物理研究所_粒子天体物理中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Xu, Y,Sun, XY,Wu, D,et al. Ammonia catalyzed hydrolysis-condensation kinetics of tetraethoxysilane/dimethyldiethoxysilane mixtures studied by Si-29 NMR and SAXS[J]. JOURNAL OF SOLUTION CHEMISTRY,2007,36(3):327-344. |
| APA | Xu, Y.,Sun, XY.,Wu, D.,Sun, YH.,Yang, YX.,...&吴忠华.(2007).Ammonia catalyzed hydrolysis-condensation kinetics of tetraethoxysilane/dimethyldiethoxysilane mixtures studied by Si-29 NMR and SAXS.JOURNAL OF SOLUTION CHEMISTRY,36(3),327-344. |
| MLA | Xu, Y,et al."Ammonia catalyzed hydrolysis-condensation kinetics of tetraethoxysilane/dimethyldiethoxysilane mixtures studied by Si-29 NMR and SAXS".JOURNAL OF SOLUTION CHEMISTRY 36.3(2007):327-344. |
入库方式： OAI收割
来源：高能物理研究所
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