The search of promoters for silica condensation and rational synthesis of hydrothermally stable and well ordered mesoporous silica materials with high degree of silica condensation at conventional temperature
文献类型：期刊论文
| 作者 | Du, Yunchen1,2; Lan, Xijie3; Liu, Sen1,2; Ji, Yanyan1,2; Zhang, Yonglai1,2; Zhang, Weiping3; Xiao, Feng-Shou1,2 |
| 刊名 | microporous and mesoporous materials
 |
| 出版日期 | 2008-07-01 |
| 卷号 | 112期号:1-3页码:225-234 |
| 关键词 | silica condensation ordered mesoporous materials anionic effect hydrothermal stability Si-29 MAS NMR spectroscopy |
| 产权排序 | 2;2 |
| 通讯作者 | feng-shou xiao |
| 英文摘要 | silica samples condensed at acidic, neutral and alkaline media in the presence of various inorganic anions have been carefully investigated by si-29 mas nmr spectroscopy. the results show that so42- and co32- could effectively improve the degree of silica condensation under neutral and alkaline media. accordingly, for example, it is designable to synthesize hydrothermally stable and well ordered hexagonal mesoporous sba-15 with very high degree of silica condensation in the presence of sulfate and carbonate species under neutral condition. as we expected, hexagonal mesoporous silica materials in the presence of sulfate (sba-15-s) and carbonate species (sba-15-u) show high degree of silica condensation, giving q(4)/q(3) ratios at 6.3 and 4.3, which are much higher than that of conventional sba-15 (q(4)/(q(3) + q(2)) ratio at 1.8) synthesized in the absence of sulfate and carbonate species. very interestingly, hexagonal mesoporous sba-15-s and sba-15-u shows very high hydrothermal stability, compared with sba-15. for example, after being treated in 100% steaming at 780 degrees c for 3 h, sba-15-s still remains its mesostructure. in constrast, sba-15 loses most of the mesostructure. furthermore, heteroatoms-substituted mesoporous materials such as aluminosilicate (al-sba-15-u) could also be synthesized in the presence of urea under neutral condition, and al-sba-15-u exhibits extraordinary hydrothermal stability. the unique and novel route for syntheses of hydrothermally stable and well ordered mesoporous silica and aluminosilicate materials in the presence of sulfate and carbonate species would be very important for potential application of mesoporous silica (sba-15) and aluminosilicate materials (al-sba-15) as industrially supports and acidic catalysts. (c) 2007 published by elsevier inc. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, applied ; chemistry, physical ; nanoscience & nanotechnology ; materials science, multidisciplinary |
| 研究领域[WOS] | chemistry ; science & technology - other topics ; materials science |
| 关键词[WOS] | hydrocarbon surfactant mixtures ; molecular-sieves ; pore-size ; stability ; mcm-41 ; nmr ; aluminosilicate ; improvement ; titanosilicates ; enhancement |
| 收录类别 | SCI |
| 原文出处 | true |
| 语种 | 英语 |
| WOS记录号 | WOS:000256713300026 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/100587]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Jilin Univ, Coll Chem, Changchun 130023, Peoples R China 2.Jilin Univ, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130023, Peoples R China 3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Du, Yunchen,Lan, Xijie,Liu, Sen,et al. The search of promoters for silica condensation and rational synthesis of hydrothermally stable and well ordered mesoporous silica materials with high degree of silica condensation at conventional temperature[J]. microporous and mesoporous materials,2008,112(1-3):225-234. |
| APA | Du, Yunchen.,Lan, Xijie.,Liu, Sen.,Ji, Yanyan.,Zhang, Yonglai.,...&Xiao, Feng-Shou.(2008).The search of promoters for silica condensation and rational synthesis of hydrothermally stable and well ordered mesoporous silica materials with high degree of silica condensation at conventional temperature.microporous and mesoporous materials,112(1-3),225-234. |
| MLA | Du, Yunchen,et al."The search of promoters for silica condensation and rational synthesis of hydrothermally stable and well ordered mesoporous silica materials with high degree of silica condensation at conventional temperature".microporous and mesoporous materials 112.1-3(2008):225-234. |
入库方式： OAI收割
来源：大连化学物理研究所
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