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Synthesis of MCM-41 type materials with remarkable hydrothermal stability from UTM-1
Liu, Ziyu; Wei, Yingxu; Qi, Yue; Zhang, Shigang; Zhang, Ying; Liu, Zhongmin; Liu ZM(刘中民); Liu ZM(刘中民)
KeywordUtm-1 Post-synthetic Treatment Ph Adjusting Mesoporous Hydrothermal Stability
Source PublicationMICROPOROUS AND MESOPOROUS MATERIALS
2006-07-28
DOI10.1016/j.micromeso.2006.02.016
Volume93Issue:1-3Pages:205-211
Indexed BySCI
SubtypeArticle
Department8
Funding Project803
Contribution Rank1;1
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS KeywordMESOPOROUS MOLECULAR-SIEVES ; ORDERED HEXAGONAL STRUCTURE ; TRIBLOCK COPOLYMER ; ACIDIC MEDIA ; SILICA ; ALUMINOSILICATES ; CATALYSIS ; IMPROVEMENT ; MECHANISM ; FRAMEWORK
AbstractA microporous zeolite UTM-1 was prepared and transferred to MCM-41 type materials by refluxing with surfactant at the presence of NaOH and by a subsequent pH adjusting process. The pH value affected the long-range order of these mesostructures greatly, and MCM-41 type products were obtained at pH = 7 and pH = 5 (designated as MS-7 and MS-5, respectively). The as-synthesized MS-7 showed smaller particle sizes (about 500 nm) and cylindrical pores. MS-7 showed a high BET specific surface area of 1003 m(2)/g and a high pore volume of 1.20 cm(3)/g after calcination at 823 K as well as two pore size distributions centred at 2.4 and 3.7 nm, respectively. The calcined MS-7 exhibited remarkable hydrothermal stability. After being treated in boiling water for 312 h, the material remained a high BET specific surface area of 922 m(2)/g and a high pore volume of 1.08 cm(3)/g without degrading its well-ordered mesostructure. Compared with MS-7, the 823 K calcined MCM-41 showed poor hydrothermal stability and preserved only a BET specific surface area of 150 m(2)/g and a pore volume of 0.35 cm(3)/g upon being treated in boiling water for 24 h. The remarkable hydrothermal stability of MS-7 was ascribed by solid-state NMR results to the presence of higher percentage of 4-fold coordinated Al species and the highly polymerized pore walls. (c) 2006 Elsevier Inc. All rights reserved.
Language英语
URL查看原文
WOS IDWOS:000239252700025
Citation statistics
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/93889
Collection中国科学院大连化学物理研究所
Corresponding AuthorLiu ZM(刘中民); Liu ZM(刘中民)
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, Appl Catalysis Lab, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Liu, Ziyu,Wei, Yingxu,Qi, Yue,et al. Synthesis of MCM-41 type materials with remarkable hydrothermal stability from UTM-1[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2006,93(1-3):205-211.
APA Liu, Ziyu.,Wei, Yingxu.,Qi, Yue.,Zhang, Shigang.,Zhang, Ying.,...&刘中民.(2006).Synthesis of MCM-41 type materials with remarkable hydrothermal stability from UTM-1.MICROPOROUS AND MESOPOROUS MATERIALS,93(1-3),205-211.
MLA Liu, Ziyu,et al."Synthesis of MCM-41 type materials with remarkable hydrothermal stability from UTM-1".MICROPOROUS AND MESOPOROUS MATERIALS 93.1-3(2006):205-211.
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