An IR spectroscopic study of acid centers on the surface of Al, Zr silica gels

被引:0
|
作者
Kustov, L. M. [1 ]
Borovkov, V. Yu. [1 ]
Tkachenko, O. P. [1 ]
Bondar', L. A. [2 ]
机构
[1] Russian Acad Sci, ND Zelinskii Organ Chem Inst, Moscow 119992, Russia
[2] Natl Acad Sci Ukraine, Chuiko Inst Surface Chem, Kiev, Ukraine
关键词
ZIRCONIUM;
D O I
10.1134/S003602440912019X
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
Acid centers of Al, Zr silica gels with approximately equal aluminum ion contents (similar to 2.4% Al2O3) and various concentrations of Zr ions were studied by IR spectroscopy using the deuteroacetonitrile molecule as a probe. The surface of such samples was found to contain Lewis acid centers of two types, coordination unsaturated (I) silicon and (II) zirconium ions. An increase in the content of zirconium ions was accompanied by a decrease in the intensity of the 2328 cm(-1) band in the IR spectra. This band was characteristic of interaction of CD3CN with Lewis acid centers of type I. The suggestion was made that this was caused by a decrease in the accessibility of coordination unsaturated silicon ions to CD3CN molecules.
引用
收藏
页码:2115 / 2118
页数:4
相关论文
共 50 条
  • [31] IR-SPECTROSCOPIC STUDY OF THE NATURE OF THE SURFACE CENTERS AND ADSORPTION OF METHANOL BY IRON-MOLYBDENUM OXIDE CATALYST
    DAVYDOV, AA
    SHEPOTKO, ML
    TEORETICHESKAYA I EKSPERIMENTALNAYA KHIMIYA, 1990, 26 (04): : 474 - 480
  • [32] IR SPECTROSCOPIC STUDY OF THE SURFACE OF TIO2 ANATASE MODIFIED WITH SULFURIC-ACID
    KHADZHIIVANOV, KI
    DAVYDOV, AA
    KINETICS AND CATALYSIS, 1988, 29 (02) : 398 - 402
  • [33] IR-SPECTROSCOPIC STUDY OF CONFORMATIONAL FEATURES OF POLYVINYL ACETATE AND POLY(METHYL METHACRYLATE SYNTHESIZED ON THE SILICA SURFACE
    PAVLOVA, LV
    PAVLOV, SA
    BRUK, MA
    VYSOKOMOLEKULYARNYE SOEDINENIYA SERIYA A, 1987, 29 (07): : 1518 - 1523
  • [34] DETERMINATION OF THE STRENGTH OF LEWIS ACID CENTERS VIA IR SPECTROSCOPIC MEASUREMENT OF ADSORBED PYRIDINE
    PAUKSHTIS, EA
    SOLTANOV, RI
    YURCHENKO, EN
    REACTION KINETICS AND CATALYSIS LETTERS, 1982, 19 (1-2): : 105 - 108
  • [35] Use of spectroscopic ellipsometry to study Zr/Ti films on Al
    Laha, P
    Schram, T
    Terryn, H
    SURFACE AND INTERFACE ANALYSIS, 2002, 34 (01) : 677 - 680
  • [36] IR spectroscopic study of surface properties of amorphous water ice
    Rudakova, A. V.
    Poretskiy, M. S.
    Marinov, I. L.
    Tsyganenko, A. A.
    OPTICS AND SPECTROSCOPY, 2010, 109 (05) : 708 - 718
  • [37] IR Spectroscopic Study of Methane Adsorption and Radiolysis on a BeO Surface
    Gadzhieva, N. N.
    Samedov, E. A.
    Abdullaeva, K. I.
    1995, (62)
  • [38] AN IR-SPECTROSCOPIC STUDY OF SOME SURFACE PROPERTIES OF TITANIUMDIOXIDE
    KNOZINGER, H
    ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-FRANKFURT, 1970, 69 (1-2): : 108 - +
  • [39] IR spectroscopic study of surface properties of amorphous water ice
    A. V. Rudakova
    M. S. Poretskiy
    I. L. Marinov
    A. A. Tsyganenko
    Optics and Spectroscopy, 2010, 109 : 708 - 718
  • [40] 2,6-DISUBSTITUTED PYRIDINES AS PROBE MOLECULES FOR SURFACE ACID SITES - IR SPECTROSCOPIC STUDY
    KNOZINGER, H
    KRIETENBRINK, H
    RATNASAMY, P
    JOURNAL OF CATALYSIS, 1977, 48 (1-3) : 436 - 439