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FT-IR study of surface properties of unsupported MoS2. / Maugé, F.; Lamotte, J.; Nesterenko, N. S.; Manoilova, O.; Tsyganenko, A. A.

In: Catalysis Today, Vol. 70, No. 1-3, 15.10.2001, p. 271-284.

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

Harvard

Maugé, F, Lamotte, J, Nesterenko, NS, Manoilova, O & Tsyganenko, AA 2001, 'FT-IR study of surface properties of unsupported MoS2', Catalysis Today, vol. 70, no. 1-3, pp. 271-284. https://doi.org/10.1016/S0920-5861(01)00423-0

APA

Maugé, F., Lamotte, J., Nesterenko, N. S., Manoilova, O., & Tsyganenko, A. A. (2001). FT-IR study of surface properties of unsupported MoS2. Catalysis Today, 70(1-3), 271-284. https://doi.org/10.1016/S0920-5861(01)00423-0

Vancouver

Maugé F, Lamotte J, Nesterenko NS, Manoilova O, Tsyganenko AA. FT-IR study of surface properties of unsupported MoS2. Catalysis Today. 2001 Oct 15;70(1-3):271-284. https://doi.org/10.1016/S0920-5861(01)00423-0

Author

Maugé, F. ; Lamotte, J. ; Nesterenko, N. S. ; Manoilova, O. ; Tsyganenko, A. A. / FT-IR study of surface properties of unsupported MoS2. In: Catalysis Today. 2001 ; Vol. 70, No. 1-3. pp. 271-284.

BibTeX

@article{57285926b9c34fcea8a4f376a64edbfa,
title = "FT-IR study of surface properties of unsupported MoS2",
abstract = "Surface properties of unsupported MoS2 have been studied by means of IR spectroscopy of a wide range of adsorbed molecules. After contact with air, surface of MoS2 is partially oxidised and contains adsorbed water, Mo = O groups, sulphate and thiosulphate-like anions. These species are removable by treatment in vacuum or in H2S-H2 mixture. On MoS2, only molecular adsorption was established for SO2, CO2, COS and CH3SH showing weak basicity of surface sulphur ions. Unsupported MoS2 presents also very weak acidic properties, as revealed by pyridine, 2,6-dimethylpyridine and ethylene adsorption. However, ammonia could be protonated or coordinately bound to MoS2 surface. CO and NO interact with the coordinately unsaturated Mo sites of the sulphide, providing evidence for an important back donation effect. Comparison with surface properties of supported MoS2 points to the lower acidic and higher metallic character of Mo sites of the unsupported sulphide.",
keywords = "Hydrotreating catalyst, Infrared spectroscopy, Surface sites, Unsupported MoS",
author = "F. Maug{\'e} and J. Lamotte and Nesterenko, {N. S.} and O. Manoilova and Tsyganenko, {A. A.}",
year = "2001",
month = oct,
day = "15",
doi = "10.1016/S0920-5861(01)00423-0",
language = "English",
volume = "70",
pages = "271--284",
journal = "Catalysis Today",
issn = "0920-5861",
publisher = "Elsevier",
number = "1-3",

}

RIS

TY - JOUR

T1 - FT-IR study of surface properties of unsupported MoS2

AU - Maugé, F.

AU - Lamotte, J.

AU - Nesterenko, N. S.

AU - Manoilova, O.

AU - Tsyganenko, A. A.

PY - 2001/10/15

Y1 - 2001/10/15

N2 - Surface properties of unsupported MoS2 have been studied by means of IR spectroscopy of a wide range of adsorbed molecules. After contact with air, surface of MoS2 is partially oxidised and contains adsorbed water, Mo = O groups, sulphate and thiosulphate-like anions. These species are removable by treatment in vacuum or in H2S-H2 mixture. On MoS2, only molecular adsorption was established for SO2, CO2, COS and CH3SH showing weak basicity of surface sulphur ions. Unsupported MoS2 presents also very weak acidic properties, as revealed by pyridine, 2,6-dimethylpyridine and ethylene adsorption. However, ammonia could be protonated or coordinately bound to MoS2 surface. CO and NO interact with the coordinately unsaturated Mo sites of the sulphide, providing evidence for an important back donation effect. Comparison with surface properties of supported MoS2 points to the lower acidic and higher metallic character of Mo sites of the unsupported sulphide.

AB - Surface properties of unsupported MoS2 have been studied by means of IR spectroscopy of a wide range of adsorbed molecules. After contact with air, surface of MoS2 is partially oxidised and contains adsorbed water, Mo = O groups, sulphate and thiosulphate-like anions. These species are removable by treatment in vacuum or in H2S-H2 mixture. On MoS2, only molecular adsorption was established for SO2, CO2, COS and CH3SH showing weak basicity of surface sulphur ions. Unsupported MoS2 presents also very weak acidic properties, as revealed by pyridine, 2,6-dimethylpyridine and ethylene adsorption. However, ammonia could be protonated or coordinately bound to MoS2 surface. CO and NO interact with the coordinately unsaturated Mo sites of the sulphide, providing evidence for an important back donation effect. Comparison with surface properties of supported MoS2 points to the lower acidic and higher metallic character of Mo sites of the unsupported sulphide.

KW - Hydrotreating catalyst

KW - Infrared spectroscopy

KW - Surface sites

KW - Unsupported MoS

UR - http://www.scopus.com/inward/record.url?scp=0035886004&partnerID=8YFLogxK

U2 - 10.1016/S0920-5861(01)00423-0

DO - 10.1016/S0920-5861(01)00423-0

M3 - Article

AN - SCOPUS:0035886004

VL - 70

SP - 271

EP - 284

JO - Catalysis Today

JF - Catalysis Today

SN - 0920-5861

IS - 1-3

ER -

ID: 41681085