Sulfided supported tungsten and molybdenum catalysts promoted by nickel or cobalt. An ESR study

A.J.A. Konings; V.H.J. Beer, de; D.C. Koningsberger

doi:10.1007/978-94-009-9079-1_35

Sulfided supported tungsten and molybdenum catalysts promoted by nickel or cobalt. An ESR study

A.J.A. Konings
, V.H.J. Beer, de
, D.C. Koningsberger

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

Abstract

The ESR signals related with the sulfide phase present in W(Mo)/SiO2(y-Al2O3) are found to disappear as reasult of nickel or cobalt introduction. Consequently Ni(Co)-W(Mo)/SiO2(y-Al2O3) catalysts showed less complex ESR spectra in wich only two different ESR signals could be analyzed. This 'promotor' effect is discussed in terms of surface reorganization due to the incorporation od NI2+(Co2+)ions in the WS2(MoS2)phase. Absorption of carbonmonoxide is found to affect the ESR spectra of W/SiO2 and Ni-W/SiO2 in different ways, indicating that nickel influences the absorptive and electronic properties of the catalyst. The effects of CO absorption can be explained by means of electron transfer from CO to the catalyst.

Original language	English
Title of host publication	Magnetic Resonance in Colloid and Interface Science
Editors	J.P. Fraissard, H.A. Resing
Publisher	Springer
Pages	449-456
Number of pages	8
ISBN (Electronic)	978-94-009-9079-1
ISBN (Print)	978-90-277-1153-3, 978-94-009-9081-4
DOIs	https://doi.org/10.1007/978-94-009-9079-1_35
Publication status	Published - 1980

Publication series

Name	NATO ASI Series, Series C: Mathematical and Physical Sciences
Volume	61
ISSN (Print)	0377-2071

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10.1007/978-94-009-9079-1_35

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Konings, A. J. A., Beer, de, V. H. J., & Koningsberger, D. C. (1980). Sulfided supported tungsten and molybdenum catalysts promoted by nickel or cobalt. An ESR study. In J. P. Fraissard, & H. A. Resing (Eds.), Magnetic Resonance in Colloid and Interface Science (pp. 449-456). (NATO ASI Series, Series C: Mathematical and Physical Sciences; Vol. 61). Springer. https://doi.org/10.1007/978-94-009-9079-1_35

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title = "Sulfided supported tungsten and molybdenum catalysts promoted by nickel or cobalt. An ESR study",

abstract = "The ESR signals related with the sulfide phase present in W(Mo)/SiO2(y-Al2O3) are found to disappear as reasult of nickel or cobalt introduction. Consequently Ni(Co)-W(Mo)/SiO2(y-Al2O3) catalysts showed less complex ESR spectra in wich only two different ESR signals could be analyzed. This 'promotor' effect is discussed in terms of surface reorganization due to the incorporation od NI2+(Co2+)ions in the WS2(MoS2)phase. Absorption of carbonmonoxide is found to affect the ESR spectra of W/SiO2 and Ni-W/SiO2 in different ways, indicating that nickel influences the absorptive and electronic properties of the catalyst. The effects of CO absorption can be explained by means of electron transfer from CO to the catalyst.",

author = "A.J.A. Konings and \{Beer, de\}, V.H.J. and D.C. Koningsberger",

year = "1980",

doi = "10.1007/978-94-009-9079-1\_35",

language = "English",

isbn = "978-90-277-1153-3",

series = "NATO ASI Series, Series C: Mathematical and Physical Sciences",

publisher = "Springer",

pages = "449--456",

editor = "J.P. Fraissard and H.A. Resing",

booktitle = "Magnetic Resonance in Colloid and Interface Science",

address = "Germany",

}

Konings, AJA, Beer, de, VHJ & Koningsberger, DC 1980, Sulfided supported tungsten and molybdenum catalysts promoted by nickel or cobalt. An ESR study. in JP Fraissard & HA Resing (eds), Magnetic Resonance in Colloid and Interface Science. NATO ASI Series, Series C: Mathematical and Physical Sciences, vol. 61, Springer, pp. 449-456. https://doi.org/10.1007/978-94-009-9079-1_35

Sulfided supported tungsten and molybdenum catalysts promoted by nickel or cobalt. An ESR study. / Konings, A.J.A.; Beer, de, V.H.J.; Koningsberger, D.C.
Magnetic Resonance in Colloid and Interface Science. ed. / J.P. Fraissard; H.A. Resing. Springer, 1980. p. 449-456 (NATO ASI Series, Series C: Mathematical and Physical Sciences; Vol. 61).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

TY - GEN

T1 - Sulfided supported tungsten and molybdenum catalysts promoted by nickel or cobalt. An ESR study

AU - Konings, A.J.A.

AU - Beer, de, V.H.J.

AU - Koningsberger, D.C.

PY - 1980

Y1 - 1980

N2 - The ESR signals related with the sulfide phase present in W(Mo)/SiO2(y-Al2O3) are found to disappear as reasult of nickel or cobalt introduction. Consequently Ni(Co)-W(Mo)/SiO2(y-Al2O3) catalysts showed less complex ESR spectra in wich only two different ESR signals could be analyzed. This 'promotor' effect is discussed in terms of surface reorganization due to the incorporation od NI2+(Co2+)ions in the WS2(MoS2)phase. Absorption of carbonmonoxide is found to affect the ESR spectra of W/SiO2 and Ni-W/SiO2 in different ways, indicating that nickel influences the absorptive and electronic properties of the catalyst. The effects of CO absorption can be explained by means of electron transfer from CO to the catalyst.

AB - The ESR signals related with the sulfide phase present in W(Mo)/SiO2(y-Al2O3) are found to disappear as reasult of nickel or cobalt introduction. Consequently Ni(Co)-W(Mo)/SiO2(y-Al2O3) catalysts showed less complex ESR spectra in wich only two different ESR signals could be analyzed. This 'promotor' effect is discussed in terms of surface reorganization due to the incorporation od NI2+(Co2+)ions in the WS2(MoS2)phase. Absorption of carbonmonoxide is found to affect the ESR spectra of W/SiO2 and Ni-W/SiO2 in different ways, indicating that nickel influences the absorptive and electronic properties of the catalyst. The effects of CO absorption can be explained by means of electron transfer from CO to the catalyst.

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DO - 10.1007/978-94-009-9079-1_35

M3 - Conference contribution

SN - 978-90-277-1153-3

SN - 978-94-009-9081-4

T3 - NATO ASI Series, Series C: Mathematical and Physical Sciences

SP - 449

EP - 456

BT - Magnetic Resonance in Colloid and Interface Science

A2 - Fraissard, J.P.

A2 - Resing, H.A.

PB - Springer

ER -

Sulfided supported tungsten and molybdenum catalysts promoted by nickel or cobalt. An ESR study

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