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题名: Highly hydrothermally stable FePO4-SBA-15 synthesized using a novel one-pot hydrothermal method
作者: Wang, Runqin1, 3;  Lin, Ronghe1;  Ding, Yunjie1, 2;  Liu, Jia1, 3;  Luo, Wenting1, 3;  Du, Hong1, 3;  Lu, Yuan1
关键词: Iron phosphate ;  SBA-15 ;  Mesoporous material ;  Hydrothermal stability ;  Steam ;  Metal loading
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2015-03-01
DOI: 10.1016/S1872-2067(14)60202-3
卷: 36, 期:3, 页:446-453
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: The hydrothermal stability of FePO4-SBA-15 synthesized using a novel one-pot hydrothermal method (OP) was systematically investigated using two methods: treatment with pure steam at 800 degrees C or with boiling water at 100 degrees C. The structural changes in the samples were monitored using small angle X-ray diffraction and N-2-physisorption methods. It was found that the hydrothermal stabilities of OP samples remained high and showed little difference over the FePO4-doping range 5-40 wt%. These results differ from previous reports that the loading of heterogeneous metal atoms significantly influences the hydrothermal stability of the host ordered mesoporous material. For comparison, the hydrothermal stabilities of FePO4-SBA-15 synthesized using an impregnation method (IMP) and commercially obtained SBA-15 were also studied. The order of the sample hydrothermal stabilities was OP > IMP >> SBA-15. The formed FePO4 protective layers helped to prevent mesostructure degradation during hydrothermal treatment, therefore modified samples showed superior hydrothermal stabilities compared with pure SBA-15. The superior performance of OP samples over IMP samples is mainly attributed to the formation of stable Si-O-Fe bonds and more micropores in OP samples. (C) 2015, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
关键词[WOS]: MESOPOROUS MATERIALS ;  TEMPERATURE SYNTHESIS ;  CATALYTIC-ACTIVITY ;  OXY-BROMINATION ;  SILICA SBA-15 ;  STABILITY ;  MCM-41 ;  METHANE ;  IMPROVEMENT
语种: 英语
WOS记录号: WOS:000351029200026
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146085
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, Dalian Natl Lab Clean Energy, Dalian 116023, Liaoning, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Wang, Runqin,Lin, Ronghe,Ding, Yunjie,et al. Highly hydrothermally stable FePO4-SBA-15 synthesized using a novel one-pot hydrothermal method[J]. CHINESE JOURNAL OF CATALYSIS,2015,36(3):446-453.
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