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题名: Synthesis of ordered mesoporous Zr-P-Al materials with high thermal stability
作者: Liu, ZY;  Wei, YX;  Qi, Y;  Liu, XB;  Zhao, YF;  Liu, ZM
通讯作者: 刘中民
关键词: mesoporous ;  Zr-P-Al materials ;  post-synthetic treatment ;  thermal stability
刊名: MICROPOROUS AND MESOPOROUS MATERIALS
发表日期: 2006-04-15
DOI: 10.1016/j.micromeso.2005.11.050
卷: 91, 期:1-3, 页:225-232
收录类别: SCI
文章类型: Article
部门归属: 8
项目归属: 803
产权排名: 1;1
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
英文摘要: A kind of mesoporous Zr-P-Al materials was synthesized by a three-step method, in which a hexagonal zirconium oxide-sulfate composite was prepared and subsequently treated with a phosphoric acid solution followed by the treatment with AlCl3 solutions. These materials had ordered cylindrical pores, and their textual data depended on the amount of AlCl3 and calcination temperature. Small amount of Al incorporation (Al/Zr = 0.49) leaded to a microporous material with a Brunauer-Emmett-Teller (BET) specific surface area of 314 m(2)/g and a pore size of 0.6 nm. Increasing the Al/Zr ratio resulted in mesoporous materials with higher BET specific surface area. The mesoporous Zr-P-Al material exhibited a BET specific surface area of 462 m(2)/g and a pore size of 2.9 nm after calcination at 773 K. 973 K calcination led to a BET specific surface area of 416 m(2)/g and a pore size of 2.7 nm. Even after calcination at 1073 K, a BET specific surface area of 227 m(2)/g and a pore size of 3.2 nm could still be observed. The pentacoordinated aluminium species seemed to be indispensable for the synthesis of mesoporous Zr-P-Al materials because of their effective reduction of the lattice contraction. NMR results showed that a hexacoordinated aluminium layer, a (HO)(2)P(O-Zr)(2) layer and a Zr(OH) layer combined with each other were formed after AlCl3 treatment. Upon calcination, the layers of Al2O3, (Zr-O)(2)PO2 and ZrO2 formed the walls of the mesoporous Zr-P-Al materials. This unique structure was suggested to be responsible for the high thermal stability (up to 1073 K). (c) 2005 Elsevier Inc. All rights reserved.
关键词[WOS]: HIGH-SURFACE-AREA ;  MESOSTRUCTURED ZIRCONIUM OXOPHOSPHATE ;  YTTRIA-ZIRCONIA ;  METAL-OXIDES ;  ANIONIC SURFACTANTS ;  CATALYTIC-ACTIVITY ;  SOLID-SOLUTIONS ;  OXO PHOSPHATE ;  MAS-NMR ;  ALUMINUM
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000236656400032
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/93677
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Appl Catalysis Lab, Dalian 116023, Peoples R China

Recommended Citation:
Liu, ZY,Wei, YX,Qi, Y,et al. Synthesis of ordered mesoporous Zr-P-Al materials with high thermal stability[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2006,91(1-3):225-232.
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