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学科主题: 物理化学
题名: Structure and phase analysis of one-pot hydrothermally synthesized FePO4-SBA-15 as an extremely stable catalyst for harsh oxy-bromination of methane
作者: Wang, Runqin1, 3;  Lin, Ronghe1;  Ding, Yunjie1, 2;  Liu, Jia1, 3;  Wang, Junhu2, 4;  Zhang, Tao2, 4
通讯作者: 丁云杰
关键词: SBA-15 ;  Iron phosphate ;  Methane ;  Oxy-bromination ;  Stability
刊名: APPLIED CATALYSIS A-GENERAL
发表日期: 2013-02-26
DOI: 10.1016/j.apcata.2012.12.022
卷: 453, 页:235-243
收录类别: SCI
合作性质: 
文章类型: Article
部门归属: DNL08,15
项目归属: DNL0805,1502,1501
产权排名: 待补充
WOS标题词: Science & Technology ;  Physical Sciences ;  Life Sciences & Biomedicine
类目[WOS]: Chemistry, Physical ;  Environmental Sciences
资助者: 1,1
研究领域[WOS]: Chemistry ;  Environmental Sciences & Ecology
英文摘要: FePO4-SBA-15 (OP) was directly synthesized via a one-pot hydrothermal technique, using Fe(NO3)(3) and H3PO4 as the precursors. FePO4/SBA-15 (IMP) was also prepared as a reference, using an impregnation method and commercially available SBA-15 as the support. The yielding samples were employed to catalyze the harsh oxy-bromination of methane (OBM) reaction, showing similar initial catalytic performances. The fresh and spent samples after catalytic reaction were thoroughly characterized by N-2-physisoption, inductively coupled plasma, wide- and small-angle X-ray diffraction, transmission electron microscopy, diffuse reflectance UV-vis spectroscopy, temperature-programmed oxidation, and room temperature Fe-57 Mossbauer spectroscopy. It was found that the FePO4 was in good crystalline in the OP sample while it was in amorphous for the IMP catalyst. Despite this difference, both FePO4 phases in the fresh samples were transformed into Fe-2(PO4)(6) and Fe2P2O7 in the spent ones. Furthermore, the OP catalyst showed excellent stability in a period of 1000 h time-on-stream performance without apparent deposition of cokes. The losses of P and Fe after the catalytic evaluation were only 9.5% and 15.5%, respectively, while the ratio of P/Fe remained close to 1.0. N-2-adsorption and TEM observations confirmed that the mesoporous pores were extremely stable under the harsh reaction ambience, which might play a crucial role in the stability test. (C) 2012 Elsevier B.V. All rights reserved.
关键词[WOS]: IRON PHOSPHATE CATALYST ;  MESOPOROUS MATERIALS ;  OXIDATIVE BROMINATION ;  NITROUS-OXIDE ;  SBA-15 ;  ACID ;  SILICA ;  DEHYDROGENATION ;  HYDROLYSIS ;  FE-SBA-15
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000315610300028
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/119369
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, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Dalian Inst Chem Phys, Mossbauer Effect Data Ctr, Dalian 116023, Peoples R China

Recommended Citation:
Wang, Runqin,Lin, Ronghe,Ding, Yunjie,et al. Structure and phase analysis of one-pot hydrothermally synthesized FePO4-SBA-15 as an extremely stable catalyst for harsh oxy-bromination of methane[J]. APPLIED CATALYSIS A-GENERAL,2013,453:235-243.
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