N-2 ADSORPTION AT 77 K ON H-MORDENITE AND ALKALI-METAL-EXCHANGED MORDENITES - AN IR STUDY

被引:107
作者
GEOBALDO, F
LAMBERTI, C
RICCHIARDI, G
BORDIGA, S
ZECCHINA, A
PALOMINO, GT
AREAN, CO
机构
[1] UNIV TURIN,DIPARTIMENTO CHIM INORGAN CHIM FIS & CHIM MAT,I-10125 TURIN,ITALY
[2] UNIV ILLES BALEARS,DEPT QUIM,E-07071 PALMA DE MALLORCA,SPAIN
[3] IST NAZL FIS NUCL,SEZ TORINO,I-10125 TURIN,ITALY
关键词
D O I
10.1021/j100028a018
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
N-2 interacts with positive M(+) centers (M(+) = H+, Li+ Na+, K+, Rb+, and Cs+) present in M(+)-mordenites, with activation in the IR of the N=N stretching vibration. From the analysis of the IR spectra and from the examination of the available space present in the main channels and in the lateral pockets, it is concluded that N-2 can interact with smallest ions located in both positions and that only when the biggest ions are involved (Rb+, Cs+), the penetration of N-2 into the lateral pockets is not possible. The ($) over bar v(N=N) frequency is found to depend linearly upon the 1/(R(x) + R(NN))(2) (R(x) = cation radius): this is considered a clear proof of the predominant role of the electrostatic forces. When the perturbed ($) over bar v(N=N) stretching frequency is compared with the ($) over bar v(N=N) of N-2 perturbed by dispersion forces only (as for N-2 in the cages of rare gas matrices), it is concluded that the effect of the perturbation induced by the positive ions is always to shift the frequency toward higher values (as found for CO in M(+)-mordenite and M(+)-ZSM5): this result strongly suggests an end-on interaction of N-2 with all alkali-metal extraframework cations, Indications that N-2 behaves as an hindered rotator (especially in Cs+-mordenite) were also obtained and discussed.
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页码:11167 / 11177
页数:11
相关论文
共 47 条
  • [1] DETERMINATION OF THE ELECTRIC-FIELD IN ZEOLITES NAA, NACAA AND CA6A - CALCULATION FROM THE IONIC CHARGE-DISTRIBUTION AND INFRARED MEASUREMENTS OF THE INDUCED BAND OF N-2
    BARRACHIN, B
    DELARA, EC
    [J]. JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS II, 1986, 82 : 1953 - 1966
  • [2] THEORETICAL-STUDY OF CR+ AND CO+ BOUND TO H-2 AND N2
    BAUSCHLICHER, CW
    PARTRIDGE, H
    LANGHOFF, SR
    [J]. JOURNAL OF PHYSICAL CHEMISTRY, 1992, 96 (06) : 2475 - 2479
  • [3] LOW-TEMPERATURE CO ADSORPTION ON NA-ZSM-5 ZEOLITES - AN FTIR INVESTIGATION
    BORDIGA, S
    PLATERO, EE
    AREAN, CO
    LAMBERTI, C
    ZECCHINA, A
    [J]. JOURNAL OF CATALYSIS, 1992, 137 (01) : 179 - 185
  • [4] COMPARATIVE IR-SPECTROSCOPIC STUDY OF LOW-TEMPERATURE H2 AND CO ADSORPTION ON NA ZEOLITES
    BORDIGA, S
    GARRONE, E
    LAMBERTI, C
    ZECCHINA, A
    AREAN, CO
    KAZANSKY, VB
    KUSTOV, LM
    [J]. JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1994, 90 (21): : 3367 - 3372
  • [5] FOURIER-TRANSFORM INFRARED STUDY OF CO ADSORBED AT 77-K ON H-MORDENITE AND ALKALI-METAL-EXCHANGED MORDENITES
    BORDIGA, S
    LAMBERTI, C
    GEOBALDO, F
    ZECCHINA, A
    PALOMINO, GT
    AREAN, CO
    [J]. LANGMUIR, 1995, 11 (02) : 527 - 533
  • [6] ACETYLENE, METHYLACETYLENE AND ETHYLACETYLENE POLYMERIZATION ON H-ZSM5 - A SPECTROSCOPIC STUDY
    BORDIGA, S
    RICCHIARDI, G
    SPOTO, G
    SCARANO, D
    CARNELLI, L
    ZECCHINA, A
    AREAN, CO
    [J]. JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1993, 89 (11): : 1843 - 1855
  • [7] BORDIGA S, 1993, VIB SPECTROSC, V4, P273
  • [8] BUZZONI R, IN PRESS J PHYS CHEM
  • [9] SOLVENT-ACCESSIBLE SURFACES OF PROTEINS AND NUCLEIC-ACIDS
    CONNOLLY, ML
    [J]. SCIENCE, 1983, 221 (4612) : 709 - 713
  • [10] ELECTRIC-FIELD INDUCED INFRARED-SPECTRUM OF NITROGEN - VIBRATIONAL POLARIZABILITY MATRIX-ELEMENTS
    COURTOIS, D
    JOUVE, P
    [J]. JOURNAL OF MOLECULAR SPECTROSCOPY, 1975, 55 (1-3) : 18 - 27