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Small-Angle X-Ray Scattering Studies of Carboxyl Functionalized SBA-15 Type Mesoporous Molecular Sieves
Wu, BH; Zhang, SC; Tang, T; Xu, Y; Liu, Y; Wu, ZH; Wu ZH(吴忠华)
2010
发表期刊ACTA PHYSICO-CHIMICA SINICA
卷号26期号:8页码:2217-2223
通讯作者[Wu Bao-Hu ; Zhang Shu-Cui ; Tang Tao ; Xu Yao] Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China ; [Liu Yi] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201800, Peoples R China ; [Wu Zhong-Hua] Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China ; [Wu Bao-Hu ; Zhang Shu-Cui ; Tang Tao] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
文章类型Article
摘要Carboxyl functionalized SBA-15 type mesoporous molecular sieves synthesized via co-condensation process were characterized by small-angle X-ray scattering (SAXS). Correlation function and chord length distribution theory were used to analyze the pore structure, interface, and periodic information. The pore structure parameters calculated from chord length distribution theory were compared with the Barrett-Joyner-Halenda (BJH) model calculation results, which are based on conventional nitrogen adsorption-desorption tests. The results showed that the samples preserved the structure order of their mesostructures since no significant degradation occurred with an increase in carboxyl group loading, except for the samples with a high carboxyl loading of 50% (molar fraction, versus inorganic silica source). There are no significant deviations in the porod curves of all of the samples. The carboxyl groups may become internally embedded within the framework walls of the mesostructure, as opposed to being externally linked to the pore channels via condensation on surface Si-OH sites. Individual pore size and pore wall thickness distribution data were obtained from the chord length distribution theory calculation without modeling. The pore wall thickness distribution data, which are inaccessible by othermethod, are very helpful for a further understanding of the mesostructure materials.
关键词SBA-15 SAXS Mesoporous Correlation function Chord length distribution
学科领域Chemistry
研究领域[WOS]Chemistry ; Chemistry
DOI10.3866/PKU.WHXB20100824
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语种英语
研究领域[WOS]Chemistry ; Chemistry
WOS类目Chemistry, Physical
WOS记录号WOS:000280259900025
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/239691
专题多学科研究中心
作者单位中国科学院高能物理研究所
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GB/T 7714
Wu, BH,Zhang, SC,Tang, T,et al. Small-Angle X-Ray Scattering Studies of Carboxyl Functionalized SBA-15 Type Mesoporous Molecular Sieves[J]. ACTA PHYSICO-CHIMICA SINICA,2010,26(8):2217-2223.
APA Wu, BH.,Zhang, SC.,Tang, T.,Xu, Y.,Liu, Y.,...&吴忠华.(2010).Small-Angle X-Ray Scattering Studies of Carboxyl Functionalized SBA-15 Type Mesoporous Molecular Sieves.ACTA PHYSICO-CHIMICA SINICA,26(8),2217-2223.
MLA Wu, BH,et al."Small-Angle X-Ray Scattering Studies of Carboxyl Functionalized SBA-15 Type Mesoporous Molecular Sieves".ACTA PHYSICO-CHIMICA SINICA 26.8(2010):2217-2223.
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