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题名: Mesoporous ferrosilicates with high content of isolated iron species synthesized in mild buffer solution and their catalytic application
作者: Xin, Hongchuan1;  Liu, Jian1;  Fan, Fengtao1;  Feng, Zhaochi1;  Jia, Guoqing1;  Yang, Qihua1;  Li, Can1
通讯作者: 杨启华 ;  李灿
关键词: mesoporous ferrosilicates ;  framework iron species ;  buffer solution ;  UV resonance Raman spectra ;  phenol hydroxylation
刊名: MICROPOROUS AND MESOPOROUS MATERIALS
发表日期: 2008-08-01
DOI: 10.1016/j.micromeso.2007.11.022
卷: 113, 期:1-3, 页:231-239
收录类别: SCI
文章类型: Article
部门归属: 5
项目归属: 506,503
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: The mesoporous ferrosilicates with high content of framework iron species have been synthesized under mild acidic conditions (pH 4.4, buffer solution) by co-condensation of iron acetylacetonate and a mixture of tetraethoxysilane (TEOS) and sodium silicate using block copolymer Pluronic P123 as the template. The XRD, N-2 sorption and TEM results show that the materials have well-ordered, two-dimensional, hexagonal mesoporous structure with uniform large pore. The higher amount of iron species incorporated in the mesoporous framework could be attributed to the mild acidic conditions and a better match of the hydrolysis rates of silica source and iron source during the synthesis under such conditions. The results of UV-vis diffuse reflectance spectra, UV resonance Raman spectra and EPR spectra show that tetrahedral iron species incorporated in the mesoporous framework of the materials are predominant. The mesoporous ferrosilicates can efficiently catalyze the hydroxylation. of phenol in water using H2O2 as an oxidant. The framework iron species are found to be more active than the extra-framework iron oxide oligomer in the hydroxylation of phenol. (C) 2007 Elsevier Inc. All rights reserved.
关键词[WOS]: RESONANCE RAMAN-SPECTROSCOPY ;  MOLECULAR-SIEVES ;  PHENOL HYDROXYLATION ;  SELECTIVE REDUCTION ;  TERT-BUTYLATION ;  NITROUS-OXIDE ;  SILICA ;  PERFORMANCE ;  FRAMEWORK ;  EPOXIDATION
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000257362100028
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/100159
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, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Xin, Hongchuan,Liu, Jian,Fan, Fengtao,et al. Mesoporous ferrosilicates with high content of isolated iron species synthesized in mild buffer solution and their catalytic application[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2008,113(1-3):231-239.
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