Fourier-transform infrared and inelastic neutron-scattering study of hy zeolites

W.P.J.H. Jacobs; H. Jobic; J.H.M.C. Wolput, van; R.A. Santen, van

doi:10.1016/S0144-2449(05)80301-X

Fourier-transform infrared and inelastic neutron-scattering study of hy zeolites

W.P.J.H. Jacobs, H. Jobic, J.H.M.C. Wolput, van, R.A. Santen, van

Inorganic Materials & Catalysis

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Abstract

A combination of FTi.r. and INS spectroscopy is used in a vibrational study of the bending and stretching vibrations of the acidic hydroxyl groups of Y zeolites. The influence of the number of acidic Bronsted sites and the Si/Al ratio is discussed. Out-of-plane hydroxyl bending modes are assigned to vibrations centered around 419 cm-1 and in-plane hydroxyl bending modes are assigned to vibrations centered around 1089 cm-1. Upon dealumination, these bands are shifted by approximately 30 cm-1 to lower values. The less intense bands at 319,470,565,765, and 1130 cm-1 are assigned to proton- coupled framework vibrations. Upon dealumination, the mode at 319 cm-1 is shifted to lower frequencies and the modes at 565 and 1130 cm-1 are shifted to higher frequencies

Original language	English
Pages (from-to)	315-319
Journal	Zeolites
Volume	12
Issue number	3
DOIs	https://doi.org/10.1016/S0144-2449(05)80301-X
Publication status	Published - 1992

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title = "Fourier-transform infrared and inelastic neutron-scattering study of hy zeolites",

abstract = "A combination of FTi.r. and INS spectroscopy is used in a vibrational study of the bending and stretching vibrations of the acidic hydroxyl groups of Y zeolites. The influence of the number of acidic Bronsted sites and the Si/Al ratio is discussed. Out-of-plane hydroxyl bending modes are assigned to vibrations centered around 419 cm-1 and in-plane hydroxyl bending modes are assigned to vibrations centered around 1089 cm-1. Upon dealumination, these bands are shifted by approximately 30 cm-1 to lower values. The less intense bands at 319,470,565,765, and 1130 cm-1 are assigned to proton- coupled framework vibrations. Upon dealumination, the mode at 319 cm-1 is shifted to lower frequencies and the modes at 565 and 1130 cm-1 are shifted to higher frequencies",

author = "W.P.J.H. Jacobs and H. Jobic and {Wolput, van}, J.H.M.C. and {Santen, van}, R.A.",

year = "1992",

doi = "10.1016/S0144-2449(05)80301-X",

language = "English",

volume = "12",

pages = "315--319",

journal = "Zeolites",

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T1 - Fourier-transform infrared and inelastic neutron-scattering study of hy zeolites

AU - Jacobs, W.P.J.H.

AU - Jobic, H.

AU - Wolput, van, J.H.M.C.

AU - Santen, van, R.A.

PY - 1992

Y1 - 1992

N2 - A combination of FTi.r. and INS spectroscopy is used in a vibrational study of the bending and stretching vibrations of the acidic hydroxyl groups of Y zeolites. The influence of the number of acidic Bronsted sites and the Si/Al ratio is discussed. Out-of-plane hydroxyl bending modes are assigned to vibrations centered around 419 cm-1 and in-plane hydroxyl bending modes are assigned to vibrations centered around 1089 cm-1. Upon dealumination, these bands are shifted by approximately 30 cm-1 to lower values. The less intense bands at 319,470,565,765, and 1130 cm-1 are assigned to proton- coupled framework vibrations. Upon dealumination, the mode at 319 cm-1 is shifted to lower frequencies and the modes at 565 and 1130 cm-1 are shifted to higher frequencies

AB - A combination of FTi.r. and INS spectroscopy is used in a vibrational study of the bending and stretching vibrations of the acidic hydroxyl groups of Y zeolites. The influence of the number of acidic Bronsted sites and the Si/Al ratio is discussed. Out-of-plane hydroxyl bending modes are assigned to vibrations centered around 419 cm-1 and in-plane hydroxyl bending modes are assigned to vibrations centered around 1089 cm-1. Upon dealumination, these bands are shifted by approximately 30 cm-1 to lower values. The less intense bands at 319,470,565,765, and 1130 cm-1 are assigned to proton- coupled framework vibrations. Upon dealumination, the mode at 319 cm-1 is shifted to lower frequencies and the modes at 565 and 1130 cm-1 are shifted to higher frequencies

U2 - 10.1016/S0144-2449(05)80301-X

DO - 10.1016/S0144-2449(05)80301-X

M3 - Article

SN - 0144-2449

VL - 12

SP - 315

EP - 319

JO - Zeolites

JF - Zeolites

IS - 3

ER -

Fourier-transform infrared and inelastic neutron-scattering study of hy zeolites

Abstract

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