OXIDATION-STATES OF VANADIUM IN V-P-O OXIDATION CATALYSTS - P-31-NMR BY SPIN-ECHO MAPPING

被引：58
|
作者：
LI, J
LASHIER, ME
SCHRADER, GL
GERSTEIN, BC
机构：
[1] IOWA STATE UNIV SCI & TECHNOL, DEPT CHEM, AMES, IA 50011 USA
[2] IOWA STATE UNIV SCI & TECHNOL, DEPT CHEM ENGN, AMES, IA 50011 USA
来源：
APPLIED CATALYSIS | 1991年 / 73卷 / 01期
关键词：
CATALYST CHARACTERIZATION (P-31-NMR); NORMAL-BUTANE; OXIDATION CATALYSTS; OXIDATION STATES; VANADIUM-PHOSPHORUS OXIDES;
D O I：
10.1016/0166-9834(91)85114-B
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：
The oxidation state of vanadium in V-P-O catalysts before and after use has been examined using P-31 NMR spin echo mapping. The presence of V4+ and V5+ species could be detected for beta-VOPO4, (VO)2P2O7 and industrially-related materials with P/V = 0.9, 1.0, and 1.1. Magnetic susceptibility measurements were used to confirm the presence of para-magnetic vanadium in most catalysts which had been exposed to n-butane or 1-butene. Several models of active V-P-O catalysts have been offered previously which can be related to the NMR results.
引用
收藏
页码：83 / 95
页数：13
相关论文
共 50 条
  • [21] Mechanism of selective oxidation of butane to maleic anhydride on V-P-O catalysts - Quantum chemical description.
    Haber, J
    Tokarz, R
    Witko, M
    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1996, 211 : 207 - COLL
  • [22] THE VAPOR-PHASE PREPARATION OF V-P-O CATALYSTS EFFECTIVE FOR BUTANE OXIDATION TO MALEIC-ANHYDRIDE
    TAKITA, Y
    HASHIGUCHI, T
    MATSUNOSAKO, H
    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 1988, 61 (10) : 3737 - 3739
  • [23] Dynamic properties of P4O6S and P4O7: 31P spin-echo and 31P MAS-NMR investigations
    MPI fur Festkorperforschung, Heisenbergstr. 1, D-70569 Stuttgart, Germany
    Solid State Nucl Magn Reson, 3-4 (211-224):
  • [24] Dynamic properties of P4O6S and P4O7:: 31P spin-echo and 31P MAS-NMR investigations
    Hoffbauer, W
    Wefing, S
    Klösters, G
    Frick, F
    Jansen, M
    SOLID STATE NUCLEAR MAGNETIC RESONANCE, 1999, 14 (3-4) : 211 - 224
  • [25] The selective oxidation of n-butane to maleic anhydride:: comparison of bulk and supported V-P-O catalysts
    Ruitenbeek, M
    van Dillen, AJ
    Barbon, A
    van Faassen, EE
    Koningsberger, DC
    Geus, JW
    CATALYSIS LETTERS, 1998, 55 (3-4) : 133 - 139
  • [26] INSITU FTIR STUDY OF N-BUTANE SELECTIVE OXIDATION TO MALEIC-ANHYDRIDE ON V-P-O CATALYSTS
    WENIG, RW
    SCHRADER, GL
    JOURNAL OF PHYSICAL CHEMISTRY, 1986, 90 (24): : 6480 - 6488
  • [27] Vanadium phosphorus oxides with P/V=2 used as oxidation and ammoxidation catalysts
    Hannour, FK
    Martin, A
    Kubias, B
    Lucke, B
    Bordes, E
    Courtine, P
    CATALYSIS TODAY, 1998, 40 (2-3) : 263 - 272
  • [28] SOME SELECTIVITY CRITERIA IN MILD OXIDATION CATALYSIS V-P-O PHASES IN BUTENE OXIDATION TO MALEIC-ANHYDRIDE
    BORDES, E
    COURTINE, P
    JOURNAL OF CATALYSIS, 1979, 57 (02) : 236 - 252
  • [29] LOCATION AND FUNCTIONS OF ZN AS A PROMOTER ELEMENT IN THE V-P-O CATALYSTS FOR NORMAL-BUTANE OXIDATION TO MALEIC-ANHYDRIDE
    TAKITA, Y
    TANAKA, K
    ICHIMARU, S
    ISHIHARA, T
    INOUE, T
    ARAI, H
    JOURNAL OF CATALYSIS, 1991, 130 (02) : 347 - 353
  • [30] The selective oxidation of n-butane to maleic anhydride; development of silica- and titania supported V-P-O catalysts
    Ruitenbeek, M
    Overbeek, RA
    Koningsberger, DC
    Geus, JW
    CATALYTIC ACTIVATION AND FUNCTIONALISATION OF LIGHT ALKANES: ADVANCES AND CHALLENGES, 1998, 44 : 423 - 427
12345