Coordination and oxidation states of iron incorporated into MCM-41

被引：0
|
作者：
Lázár, K
Pál-Borbély, G
Szegedi, A
Beyer, HK
机构：
[1] CRC, Inst Isotope & Surface Chem, H-1525 Budapest, Hungary
[2] CRC, Inst Chem, H-1525 Budapest, Hungary
来源：
IMPACT OF ZEOLITES AND OTHER POROUS MATERIALS ON THE NEW TECHNOLOGIES AT THE BEGINNING OF THE NEW MILLENNIUM, PTS A AND B | 2002年 / 142卷
关键词：
D O I：
暂无
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Low iron content Fe-MCM-41 (Si/Fe = 139) samples are characterized under in situ redox conditions by TPR, IR and Mossbauer spectroscopy. In the mesoporous structure full reversibility of the Fe3+ <----> Fe2+ transition is found. Different types of low coordinations are suggested for Fe2+. Reductions in hydrogen and carbon monoxide are compared, the possible role of silanolic -OH groups is discussed and propagation of reduction via (H-2)(+) ions is also suggested. A comparison is made with samples of higher iron contents (Si/Fe = 77, 20 and 12).
引用
收藏
页码：1347 / 1354
页数：8
相关论文
共 50 条
  • [1] Coordination and oxidation states of iron incorporated in mesoporous MCM41
    Lázár, K
    Pál-Borbély, G
    Szegedi, A
    Beyer, HK
    HYPERFINE INTERACTIONS, 2002, 139 (1-4): : 19 - 31
  • [2] Coordination and Oxidation States of Iron Incorporated in Mesoporous MCM41
    K. Lázár
    G. Pál-Borbély
    Á. Szegedi
    H. K. Beyer
    Hyperfine Interactions, 2002, 139-140 : 19 - 31
  • [3] Coordination structures of vanadium and iron in MCM-41 and the catalytic properties in partial oxidation of methane
    Zhang, QH
    Yang, W
    Wang, XX
    Wang, Y
    Shishido, T
    Takehira, K
    MICROPOROUS AND MESOPOROUS MATERIALS, 2005, 77 (2-3) : 223 - 234
  • [4] Comparison of the Redox Properties of Iron Incorporated in Different Amounts into MCM-41
    Ágnes Szegedi
    Gabriella Pál-Borbély
    Károly Lázár
    Reaction Kinetics and Catalysis Letters, 2001, 74 : 277 - 287
  • [5] Comparison of the redox properties of iron incorporated in different amounts into MCM-41
    Szegedi, A
    Pál-Borbély, G
    Lázár, K
    REACTION KINETICS AND CATALYSIS LETTERS, 2001, 74 (02): : 277 - 287
  • [6] Catalytic performance of vanadium incorporated MCM-41 catalysts for the partial oxidation of methane to formaldehyde
    Du, GA
    Lim, SY
    Yang, YH
    Wang, C
    Pfefferle, L
    Haller, GL
    APPLIED CATALYSIS A-GENERAL, 2006, 302 (01) : 48 - 61
  • [7] CERIUM INCORPORATED INTO A MESOPOROUS MOLECULAR SIEVE (MCM-41)
    do Nascimento, G. E.
    Duarte, M. M. M. B.
    Barbosa, C. M. B. M.
    BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING, 2016, 33 (03) : 541 - 547
  • [8] Local environment of manganese incorporated in mesoporous MCM-41
    Tusar, NN
    Logar, NZ
    Vlaic, G
    Arcon, L
    Arcon, D
    Daneu, N
    Kaucic, V
    MICROPOROUS AND MESOPOROUS MATERIALS, 2005, 82 (1-2) : 129 - 136
  • [9] Photophysical properties of coumarin derivatives incorporated in MCM-41
    Li, DM
    Zhao, WJ
    Sun, XD
    Zhang, JL
    Anpo, M
    Zhao, JC
    DYES AND PIGMENTS, 2006, 68 (01) : 33 - 37
  • [10] Bimetallic iron and cobalt incorporated MFI/MCM-41 composite and its catalytic properties
    Li, Baoshan
    Xu, Junqing
    Li, Xiao
    Liu, Jianjun
    Zuo, Shengli
    Pan, Zhiyun
    Wu, Ziyu
    MATERIALS RESEARCH BULLETIN, 2012, 47 (05) : 1142 - 1148
12345