Direct synthesis of Al-SBA-15 containing aluminosilicate species plugs in an acid-free medium and structural adjustment by hydrothermal post-treatment | |
Shi, Lei1; Xu, Yan2,3; Zhang, Na1; Lin, Sen2; Li, Xiangping2; Guo, Peng2; Li, Xuebing2 | |
刊名 | JOURNAL OF SOLID STATE CHEMISTRY |
2013-07-01 | |
卷号 | 203期号:1页码:281-290 |
关键词 | Mesoporous Al-SBA-15 Aluminosilicate plugs Eco-friendly synthesis Structural adjustment Hydrothermal post-treatment |
英文摘要 | A series of Al-SBA-15 with controllable aluminosilicate plug structures inside straight mesopores has been hydrothermally synthesized in a one-step synthesis in an environmentally friendly acid-free medium, using triblock copolymer Pluronic P123 as a structure-directing agent, water as solvent, tetraethyl orthosilicate (TEOS) and aluminum nitrate (Al(NO)(3)center dot 9H(2)O) as silica and aluminum sources, respectively. The effects of the P123/Si molar ratio in the initial solution and aging temperature on the structural properties of the resulting materials were investigated by powder X-ray diffraction (XRD), nitrogen adsorption-desorption at 77 K, transmission electron microscopy (TEM), scanning electron microscopy (SEM), thermogravimetric (TG), FT-IR spectra and inductively coupled plasma (ICP) analyses. The nature of the Al species and the acidity of the resultant samples were studied by solid state Al-27 MAS NMR and pyridine adsorption measurements. The specific surface area (935-755 m(2)g(-1)), pore volume (1.03-0.56 cm(3)g(-1)) and especially the concentration and distribution of open type mesopores (0-68% to the total pores) of the synthesized Al-SBA-15 can be controlled by a simple adjustment of the P123/Si molar ratio in the initial solution. Moreover, increasing the aging temperature higher than 363 K can remarkably decrease the formation of plug structures to obtain "open" form mesopores. The observation by TEM of alternate defined gray and white areas inside the mesopores gives the strong evidence of isolated microporous aluminosilicate plugs inside the channels. In addition, a moderate hydrothermal post-treatment can finely modify the mesostructures through the partial or complete dissolution of the aluminosilicate plugs. (C) 2013 Elsevier Inc. All rights reserved. |
WOS标题词 | Science & Technology ; Physical Sciences |
类目[WOS] | Chemistry, Inorganic & Nuclear ; Chemistry, Physical |
研究领域[WOS] | Chemistry |
关键词[WOS] | INTERNAL SILICA NANOCAPSULES ; ORDERED MESOPOROUS MATERIALS ; HIERARCHICAL ZEOLITE-BETA ; MOLECULAR-SIEVES ; NONIONIC TRIBLOCK ; SBA-15 SILICAS ; DRUG-DELIVERY ; ONE-POT ; MICROPOROSITY ; TEMPERATURE |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000325190300043 |
内容类型 | 期刊论文 |
源URL | [http://ir.qibebt.ac.cn/handle/337004/6037] |
专题 | 青岛生物能源与过程研究所_生物传感技术团队 |
作者单位 | 1.Shandong Polytech Univ, Key Lab Fine Chem Univ Shandong, Jinan 250353, Peoples R China 2.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China 3.Changzhou Univ, Inst Petrochem Technol, Changzhou 213164, Peoples R China |
推荐引用方式 GB/T 7714 | Shi, Lei,Xu, Yan,Zhang, Na,et al. Direct synthesis of Al-SBA-15 containing aluminosilicate species plugs in an acid-free medium and structural adjustment by hydrothermal post-treatment[J]. JOURNAL OF SOLID STATE CHEMISTRY,2013,203(1):281-290. |
APA | Shi, Lei.,Xu, Yan.,Zhang, Na.,Lin, Sen.,Li, Xiangping.,...&Li, Xuebing.(2013).Direct synthesis of Al-SBA-15 containing aluminosilicate species plugs in an acid-free medium and structural adjustment by hydrothermal post-treatment.JOURNAL OF SOLID STATE CHEMISTRY,203(1),281-290. |
MLA | Shi, Lei,et al."Direct synthesis of Al-SBA-15 containing aluminosilicate species plugs in an acid-free medium and structural adjustment by hydrothermal post-treatment".JOURNAL OF SOLID STATE CHEMISTRY 203.1(2013):281-290. |
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