Influences of pretreatment temperature on the surface silylation of diatomaceous amorphous silica with trimethylchlorosilane
文献类型：期刊论文
| 作者 | Yuan, Peng; Yang, Dan; Lin, Zhongyu; He, Hongping; Wen, Xiaoyan; Wang, Linjiang; Deng, Feng |
| 刊名 | JOURNAL OF NON-CRYSTALLINE SOLIDS
 |
| 出版日期 | 2006-10-01 |
| 卷号 | 352期号:36-37页码:3762-3771 |
| 关键词 | geology and archeology FTIR measurements silica NMR MAS-NMR and NQR surfaces and interfaces thermal properties water |
| 英文摘要 | Diatomaceous amorphous silica samples were modified by silylation using trimethylehlorosilane (TMCS). The resultant materials were characterized by using thermogravimetry (TG), H-1 magic-angle spinning nuclear magnetic resonance (H-1 MAS NMR), Fourier transform infrared spectroscopy (FTIR) and chemical analysis. The degree of silylation was found to increase with the increasing temperature of thermal pretreatment on diatomaceous silica prior to silylation. Increment of the pretreated temperature leads to stepwise removal of physisorbed water followed by the dehydration of capping water that H-bonded with the surface silanols, resulting in exposure of more and more isolated and H-bonded silanols previously covered by water molecules. Among these exposed silanols, isolated silanols show high activity for silylation reaction but H-bonded ones show poor activity. The maximum degree of surface attachment of TMCS grafted onto the diatomaceous silica (about 1.81 mmol TMCS groups per gram of silica) was shown in the sample pretreated at 1100 degrees C, in which the amount of exposed isolated silanols get the maximum. The fundamental information derived from this work is of significance in well understanding the surface silylation reaction of diatomaceous silica and providing useful information for related industrial production. (c) 2006 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Materials Science, Ceramics ; Materials Science, Multidisciplinary |
| 研究领域[WOS] | Materials Science |
| 关键词[WOS] | H-1 MAS NMR ; HYDROXYL-GROUPS ; DIATOMITE SURFACE ; ADSORPTION ; SPECTROSCOPY ; MCM-41 ; BIOSILICA ; SPECTRA ; DRIFT ; FTIR |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000241098800002 |
| 公开日期 | 2015-07-28 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/4687]  |
| 专题 | 武汉物理与数学研究所_2011年以前论文发表（包括2011年） |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 4.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China 5.Guilin Univ Technol, Minist Educ, Key Lab Nonferrous Mat & Proc Technol, Guilin 541004, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yuan, Peng,Yang, Dan,Lin, Zhongyu,et al. Influences of pretreatment temperature on the surface silylation of diatomaceous amorphous silica with trimethylchlorosilane[J]. JOURNAL OF NON-CRYSTALLINE SOLIDS,2006,352(36-37):3762-3771. |
| APA | Yuan, Peng.,Yang, Dan.,Lin, Zhongyu.,He, Hongping.,Wen, Xiaoyan.,...&Deng, Feng.(2006).Influences of pretreatment temperature on the surface silylation of diatomaceous amorphous silica with trimethylchlorosilane.JOURNAL OF NON-CRYSTALLINE SOLIDS,352(36-37),3762-3771. |
| MLA | Yuan, Peng,et al."Influences of pretreatment temperature on the surface silylation of diatomaceous amorphous silica with trimethylchlorosilane".JOURNAL OF NON-CRYSTALLINE SOLIDS 352.36-37(2006):3762-3771. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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