Electrochemical and UV-visible spectroscopy studies of K6As2W18 - xMoxO62 (x=0-3) Wells-Dawson heteropolyacid catalysts for oxidative dehydrogenation of benzyl alcohol

被引：8
|
作者：
Choi, Jung Ho [1 ]
Kang, Tae Hun [1 ]
Bang, Yongju [1 ]
Song, Ji Hwan [1 ]
Song, In Kyu [1 ]
机构：
[1] Seoul Natl Univ, Inst Chem Proc, Sch Chem & Biol Engn, Seoul 151744, South Korea
来源：
CATALYSIS COMMUNICATIONS | 2014年 / 55卷
基金：
新加坡国家研究基金会;
关键词：
Tungstoarsenates; Molybdenum; Electrochemical measurement; UV-visible spectroscopy; Oxidative dehydrogenation; REDOX PROPERTIES; REDUCTION POTENTIALS; KEGGIN; POLYOXOMETALATE; ELECTRON; BEHAVIOR; ACID;
D O I：
10.1016/j.catcom.2014.06.012
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：
Redox behaviors of molybdenum-substituted Wells-Dawson tungstoarsenate heteropolyacid catalysts (alpha-K6As2W18 (-) xMoxO62 (x = 0-3)) were probed by electrochemical and UV-visible spectroscopy measurements. Reduction potential of K6As2W18 (-) xMoxO62 (x = 0-3) catalysts shifted to more positive potential with increasing molybdenum content. UV-visible spectroscopy analysis was conducted as a simple diagnostic method for reduction potential. Absorption edge energy determined by UV-visible spectroscopy decreased with increasing reduction potential. Gas-phase oxidative dehydrogenation of benzyl alcohol was carried out as a model reaction. Yield for benzaldehyde increased with increasing electrochemical reduction potential and with decreasing UV-visible absorption edge energy of the catalysts. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：29 / 33
页数：5
相关论文
共 11 条
  • [1] Redox Properties of Nano-Structured α2-K6As2 W18-xMoxO62 (x=0-3) Wells-Dawson Heteropolyacid Catalysts Probed by Scanning Tunneling Microscopy
    Gim, Min Yeong
    Choi, Jung Ho
    Kang, Tae Hun
    Song, In Kyu
    JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2016, 16 (10) : 10823 - 10828
  • [2] Scanning tunneling microscopy and tunneling spectroscopy studies of niobium-containing H6+xP2W18-xNbxO62 (x=0, 1, 2, 3) Wells-Dawson heteropolyacid catalysts to probe their redox property and oxidation catalysis
    Choi, Jung Ho
    Park, Dong Ryul
    Park, Sunyoung
    Song, In Kyu
    KOREAN JOURNAL OF CHEMICAL ENGINEERING, 2011, 28 (11) : 2137 - 2141
  • [3] Scanning tunneling microscopy and tunneling spectroscopy studies of niobium-containing H6+xP2W18−xNbxO62 (x=0, 1, 2, 3)Wells-Dawson heteropolyacid catalysts to probe their redox property and oxidation catalysis
    Jung Ho Choi
    Dong Ryul Park
    Sunyoung Park
    In Kyu Song
    Korean Journal of Chemical Engineering, 2011, 28 : 2137 - 2141
  • [4] Reduction potential, UV-visible absorption edge energy, and oxidation catalysis of niobium-containing H3+xPW12-xNbxO40 Keggin and H6+xP2W18-xNbxO62 Wells-Dawson heteropolyacid catalysts
    Park, Dong Ryul
    Choi, Jung Ho
    Park, Sunyoung
    Song, In Kyu
    APPLIED CATALYSIS A-GENERAL, 2011, 394 (1-2) : 201 - 208
  • [5] Scanning Tunneling Microscopy Study of H6+x P2Mo18-x V x O62 (x=0-3) Wells-Dawson Heteropolyacid Catalysts: Correlation of NDR Peak Voltage with Reduction Potential and Oxidation Catalysis
    Choi, Jung Ho
    Park, Dong Ryul
    Park, Sunyoung
    Song, In Kyu
    CATALYSIS LETTERS, 2011, 141 (06) : 826 - 832
  • [6] Etherification of n-Butanol to Di-n-Butyl Ether over H3+xPW12-xNbxO40 (x=0, 1, 2, 3) Keggin and H6+xP2W18-xNbxO62 (x=0, 1, 2, 3) Wells-Dawson Heteropolyacid Catalysts
    Kim, Jeong Kwon
    Choi, Jung Ho
    Yi, Jongheop
    Song, In Kyu
    KOREAN CHEMICAL ENGINEERING RESEARCH, 2012, 50 (02): : 251 - 256
  • [7] Thermal stability and catalytic properties of the Wells-Dawson K6P2W18O62 center dot 10H(2)O heteropoly compound in the oxidative dehydrogenation of isobutane to isobutene
    Comuzzi, C
    Primavera, A
    Trovarelli, T
    Bini, G
    Cavani, F
    TOPICS IN CATALYSIS, 1996, 3 (3-4) : 387 - 406
  • [8] Scanning Tunneling Microscopy and Tunneling Spectroscopy of Nano-structured H6P2MoxW18-xO62 (X=0, 3, 9, 15, 18) Wells-Dawson Heteropolyacids
    Choi, Jung Ho
    Park, Dong Ryul
    Park, Sunyoung
    Song, In Kyu
    JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2011, 11 (07) : 6533 - 6538
  • [9] Thermal stability and catalytic properties of the Wells-Dawson K6P2W18O62•10H2O heteropoly compound in the oxidative dehydrogenation of isobutane to isobutene (vol 3, pg 387, 1996)
    Comuzzi, C
    Primavera, A
    Trovarelli, A
    Bini, G
    Cavani, F
    TOPICS IN CATALYSIS, 1999, 9 (3-4) : 251 - 262
  • [10] Etherification of n-butanol to di-n-butyl ether over H3PMo12 - xWxO40 (x=0, 3, 6, 9, 12) Keggin and H6P2Mo18 - xWxO62 (x=0, 3, 9, 15, 18) Wells-Dawson heteropolyacid catalysts
    Choi, Jung Ho
    Kim, Jeong Kwon
    Park, Dong Ryul
    Park, Sunyoung
    Yi, Jongheop
    Song, In Kyu
    CATALYSIS COMMUNICATIONS, 2011, 14 (01) : 48 - 51
12