Ion-dipole interactions between adsorbed CO and support cations in Pt/K-LTL

M.J. Kappers; M. Vaarkamp; J.T. Miller; F.S. Modica; M.K. Barr; D.C. Koningsberger; J.H. Maas, van der

doi:10.1007/BF00769475

Ion-dipole interactions between adsorbed CO and support cations in Pt/K-LTL

M.J. Kappers
, M. Vaarkamp
, J.T. Miller
, F.S. Modica
, M.K. Barr
, D.C. Koningsberger
, J.H. Maas, van der

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

The adsorption of CO on a non-acidic Pt/K-LTL catalyst was studied by diffuse reflectance and transmission IR spectroscopy. The CO spectrum strongly depends on the exptl. conditions. Adsorption on the small Pt clusters in the presence of H2O gives linear-CO bands between 2060 and 1990 cm-1 and a bridging-CO band at .apprx. 1800 cm-1. In the absence of H2O, the linear bands are red shifted to .apprx. 1940 and 1720 cm-1, resp. The frequency shift is attributed to an ion-dipole interaction between adsorbed CO and support cations. The ion-dipole interaction is screened by the adsorbed H2O leading to a smaller red shift in the CO stretching frequency. [on SciFinder (R)]

Original language	English
Pages (from-to)	235-244
Journal	Catalysis Letters
Volume	21
Issue number	3-4
DOIs	https://doi.org/10.1007/BF00769475
Publication status	Published - 1993

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title = "Ion-dipole interactions between adsorbed CO and support cations in Pt/K-LTL",

abstract = "The adsorption of CO on a non-acidic Pt/K-LTL catalyst was studied by diffuse reflectance and transmission IR spectroscopy. The CO spectrum strongly depends on the exptl. conditions. Adsorption on the small Pt clusters in the presence of H2O gives linear-CO bands between 2060 and 1990 cm-1 and a bridging-CO band at .apprx. 1800 cm-1. In the absence of H2O, the linear bands are red shifted to .apprx. 1940 and 1720 cm-1, resp. The frequency shift is attributed to an ion-dipole interaction between adsorbed CO and support cations. The ion-dipole interaction is screened by the adsorbed H2O leading to a smaller red shift in the CO stretching frequency. [on SciFinder (R)]",

author = "M.J. Kappers and M. Vaarkamp and J.T. Miller and F.S. Modica and M.K. Barr and D.C. Koningsberger and \{Maas, van der\}, J.H.",

year = "1993",

doi = "10.1007/BF00769475",

language = "English",

volume = "21",

pages = "235--244",

journal = "Catalysis Letters",

issn = "1011-372X",

publisher = "Kluwer Academic Publishers",

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TY - JOUR

T1 - Ion-dipole interactions between adsorbed CO and support cations in Pt/K-LTL

AU - Kappers, M.J.

AU - Vaarkamp, M.

AU - Miller, J.T.

AU - Modica, F.S.

AU - Barr, M.K.

AU - Koningsberger, D.C.

AU - Maas, van der, J.H.

PY - 1993

Y1 - 1993

N2 - The adsorption of CO on a non-acidic Pt/K-LTL catalyst was studied by diffuse reflectance and transmission IR spectroscopy. The CO spectrum strongly depends on the exptl. conditions. Adsorption on the small Pt clusters in the presence of H2O gives linear-CO bands between 2060 and 1990 cm-1 and a bridging-CO band at .apprx. 1800 cm-1. In the absence of H2O, the linear bands are red shifted to .apprx. 1940 and 1720 cm-1, resp. The frequency shift is attributed to an ion-dipole interaction between adsorbed CO and support cations. The ion-dipole interaction is screened by the adsorbed H2O leading to a smaller red shift in the CO stretching frequency. [on SciFinder (R)]

AB - The adsorption of CO on a non-acidic Pt/K-LTL catalyst was studied by diffuse reflectance and transmission IR spectroscopy. The CO spectrum strongly depends on the exptl. conditions. Adsorption on the small Pt clusters in the presence of H2O gives linear-CO bands between 2060 and 1990 cm-1 and a bridging-CO band at .apprx. 1800 cm-1. In the absence of H2O, the linear bands are red shifted to .apprx. 1940 and 1720 cm-1, resp. The frequency shift is attributed to an ion-dipole interaction between adsorbed CO and support cations. The ion-dipole interaction is screened by the adsorbed H2O leading to a smaller red shift in the CO stretching frequency. [on SciFinder (R)]

U2 - 10.1007/BF00769475

DO - 10.1007/BF00769475

M3 - Article

SN - 1011-372X

VL - 21

SP - 235

EP - 244

JO - Catalysis Letters

JF - Catalysis Letters

IS - 3-4

ER -

Ion-dipole interactions between adsorbed CO and support cations in Pt/K-LTL

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