@inproceedings{0f329502f2b54b9db34fdb74d999355f,
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",
}