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Your search keyword '"Koningsberger, D.C."' showing total 203 results
Start Over Author "Koningsberger, D.C." Publisher elsevier
203 results on '"Koningsberger, D.C."'

15. Hydration effects on the molecular structure of silica-supported vanadium oxide catalysts: A combined IR, Raman, UV–vis and EXAFS study

Author

Heterogene katalyse en materialen, Heterogene katalyse en oppervlakteonderzoek, Katalyse en spectroscopie, Dep Scheikunde, Keller, D.E., Visser, T., Soulimani, F., Koningsberger, D.C., Weckhuysen, B.M., Heterogene katalyse en materialen, Heterogene katalyse en oppervlakteonderzoek, Katalyse en spectroscopie, Dep Scheikunde, Keller, D.E., Visser, T., Soulimani, F., Koningsberger, D.C., and Weckhuysen, B.M.

Published
2007

20. Electronic Modifictions in Supported Palladium Catalysts

Author

Mojet, B.L., Kappers, M.J., Muijsers, J.C., Niemantsverdriet, J.W., Miller, J.T., Modica, F.S., Koningsberger, D.C., Weitkamp, J., Karge, H., Pfeifer, H., Hölderich, W., Inorganic Materials & Catalysis, and Chemical Reactor Engineering

Subjects
chemistry.chemical_compound, Neopentane, X-ray photoelectron spectroscopy, Hydrogenolysis, Chemistry, Propane, Inorganic chemistry, Alkalinity, Infrared spectroscopy, chemistry.chemical_element, Catalysis, Palladium
Abstract

Summary XPS and IR spectroscopy indicate that the electron density of the supported metal clusters in Pd/LTL catalysts is a function of the support acidity/alkalinity. In addition, the neopentane and propane hydrogenolysis TOF's increase with increasing support acidity from alkaline to acidic. The changes in spectroscopic and catalytic properties are due to electron deficient Pd on acidic supports, as previously proposed, and electron rich Pd on alkaline supports.

Published
1994
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24. Rhodium complexes with (N-phenyl)anthranilic acid ligands as catalysts for hydrogenation

Author

Heterogene katalyse en materialen, Katalyse en spectroscopie, Universiteit Utrecht, Dep Scheikunde, Ros, T.G., van der Lee, M.K., van Dillen, A.J., Geus, J., Koningsberger, D.C., Heterogene katalyse en materialen, Katalyse en spectroscopie, Universiteit Utrecht, Dep Scheikunde, Ros, T.G., van der Lee, M.K., van Dillen, A.J., Geus, J., and Koningsberger, D.C.

Published
2002

25. The relation between catalytic and electronic properties of supported platinum catalysts: the local density of states as determined by x-ray absorption spectroscopy

Author

Vaarkamp, M., Miller, J.T., Modica, F.S., Lane, G.S., Koningsberger, D.C., Guczi, L., Solymosi, F., Tétényi, P., Inorganic Materials & Catalysis, and Chemical Reactor Engineering

Subjects
X-ray absorption spectroscopy, Local density of states, Absorption spectroscopy, Absorption edge, Chemistry, Density of states, Analytical chemistry, chemistry.chemical_element, Particle size, Platinum, Catalysis
Abstract

The intensity of the white line of the LII and LIII X-ray absorption edge spectra of small platinum particles increases with decreasing particle size. The combined white line intensity of the LII and LIII X-ray absorption spectra for platinum catalysts with comparable average particle size is higher when dispersed on acidic than on neutral supports. This indicates that platinum particles are more electron deficient on acidic than on neutral supports. The propane hydrogenolysis TOF for platinum supported on γ-Al2O3 or H-LTL is found to be more than an order of magnitude higher than for platinum supported on a non-acidic K-LTL zeolite. The differences in catalytic behavior are related to differences in the d-band density of states.

Published
1993

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