Bernas, Heidi, Plomp, A.J., Bitter, J.H., Murzin, D.Y.
The influence of catalyst particle size, stirring rate, catalyst mass (0.2–0.6 g), reaction temperature (60–70 C), and reactant concentration (1.3–4 mmol/L, with constant reactant/catalyst...
Podkolzin, S.G., Jones, Mark E., Bitter, J.H., Weckhuysen, B.M.
Chlorinated hydrocarbons (CHCs) remain important industrial chemical intermediates and solvents, especially for the exploration of the potential of La-based materials for the conversion of...
Tuning nitrogen functionalities in catalytically grown nitrogen-containing carbon nanotubes (2008)
Dommele, S. Van, Romero-Izquirdo, A., Brydson, R., Jong, K.P. De, Bitter, J.H.
Nitrogen-containing carbon nanotubes (NCNT) were grown from acetonitrile, pyridine or N,N-dimethylformamide over a supported Fe-, Co- or Ni catalyst in the temperature range 823–1123 K. The...
Sodium alanate nanoparticles - linking size to hydrogen storage properties (2008)
Baldé, C.P., Hereijgers, B.P.C., Bitter, J.H., Jong, K.P. De
Important limitations in the application of light metal hydrides for hydrogen storage are slow kinetics and poor reversibility. To alleviate these problems doping and ball-milling are commonly...
Plomp, A.J., Vuori, Heli, Krause, A.O.I., Jong, K.P. De, Bitter, J.H.
The selective hydrogenation of cinnamaldehyde was studied over carbon nanofibers (CNF) supported platinum and ruthenium catalysts. The catalysts differed independently in their metal particle sizes...
On the local structure of Ti during in situ desorption of Ti(OBu)4 and TiCl3 doped NaAlH4 (2007)
Balde, C.P., Stil, H.A., Jong, K.P. De, Bitter, J.H.
The local structures of Ti doped NaAlH4 were investigated with extended X-ray absorption fine structure (EXAFS) and X-ray absorption near edge structure (XANES) using Ti(OBu)4 and TiCl3 precursors....
XAFS Study of the Al K-Edge in NaAlH4 (2007)
Balde, C.P., Mijovilovich, A.E., Koningsberger, D.C., Smith, A.D., Jong, K.P. De, ...
Al K-edge (1561.1 eV) XANES and EXAFS spectra of unoxidized NaAlH4, a hydrogen storage material, have been recorded in He atmosphere in a special in situ low-energy cell. The XANES spectrum of NaAlH4...
Active Ti Species in TiCl3-Doped NaAlH4. Mechanism for Catalyst Deactivation (2007)
Balde, C.P., Stil, H.A., Jong, K.P. De, Bitter, J.H.
The nature of the active Ti species in TiCl3-doped NaAlH4, a promising hydrogen storage material, was studied as a function of the desorption temperature with Ti K-edge extended X-ray absorption fine...
Dillen, A.J. Van, Geus, J.W., Jong, K.P. De, Bitter, J.H.
Carbon nanofibers (CNF) are non-microporous graphitic materials with a high surface area (100–200 m2/g), high purity and tunable surface chemistry. Therefore the material has a high potential for...
Facilitated Hydrogen Storage in NaAlH4 Supported on Carbon Nanofibers (2006)
Baldé, C.P., Hereijgers, B.P.C., Bitter, J.H., Jong, K.P. De
Hydrogen is regarded as a suitable energy carrier for sustainable energy schemes. However, the reversible storage of hydrogen is still a major challenge, especially for mobile applications. Several...
Bezemer, G.L., Bitter, J.H., Oosterbeek, H., Holewijn, J.E., Xu, X., ...
The influence of cobalt particle size in the range of 2.6-27 nm on the performance in Fischer- Tropsch synthesis has been investigated for the first time using well-defined catalysts based on an...
X-Ray studies of Pd/Ag membranes for hydrogen separation (2005)
Witjens, L.C., Bitter, J.H., Dillen, A.J. Van, Koningsberger, D.C., Jong, K.P. De
Toebes, M.L., Tang, L.M., Bitter, J.H., Dillen, A.J. Van, ...
Carbon nanofiber (CNF) supported platinum catalysts have been prepared using Pt(NH3)4(NO3)2 as a precursor by two different ion adsorption techniques, one at a constant pH and one in which the pH is...
Pd L3 edge XANES investigation of the electronic and geometric structure of Pd/Ag-H membranes (2004)
Witjens, L.C., Bitter, J.H., Dillen, A.J. Van, Jong, K.P. De
The electronic and geometric structure of the Pd/Ag–H system, an important hydrogen membrane structure, has been studied with x-ray absorption spectroscopy. Palladium L3 XANES measurements in both...
Koningsberger, D.C., Battiston, A.A., Bitter, J.H., Heijboer, W.M.
The structure of the iron species in mildly calcined over-exchanged Fe/ZSM5, prepared by CVD of FeCl3, was studied during heat treatments in He or O2/He (50:50) by coupling in situ Fe K edge HR-XANES...
Koningsberger, D.C., Battiston, A.A., Bitter, J.H., Overweg, A.R., Stephan, O., ...
The evolution of iron in over-exchanged Fe/ZSM5 prepared via chemical vapor deposition of FeCl{3} was studied at each stage of the synthesis. Different characterization techniques (EXAFS, HR-XANES,...
Koningsberger, D.C., Battiston, A.A., Bitter, J.H., Heijboer, W.M.
The structure of the iron species in mildly calcined over-exchanged Fe/ZSM5, prepared by CVD of FeCl3, was studied during heat treatments in He or O2/He (50:50) by coupling in situ Fe K edge HR-XANES...
Toebes, M.L., Prinsloo, F.F., Bitter, J.H., Dillen, A.J. Van, Jong, K.P. De
Carbon-nanofiber-supported ruthenium catalysts were employed to study the influence of oxygen-containing surface groups on catalytic performance in the liquid-phase hydrogenation of cinnamaldehyde....
Koningsberger, D.C., Tromp, M., Bokhoven, J.A. Van, Arink, A.M., Bitter, J.H., Koten, G. Van
Herein we describe a structural characterisation with EXAFS of copper(I) arenethiolate complexes in both the solid and liquid state. Previously noted difficulties in the detection of the CuCu...
Donk, S. Van, Bus, E., Broersma, A., Bitter, J.H., Jong, K.P. De
Aged H-ferrierite (H-FER) samples with different contents of deposits were prepared and studied under differential catalytic conditions in a tapered element oscillating microbalance. Subsequently,...
Koningsberger, D.C., Norman, A., Perrichon, V., Bensaddik, A., Lemaux, S., Bitter, J.H.
The reduction behaviour of Ce x Zr1x O2 and Pt or Pd supported on Ce x Zr1x O2 was investigated by means of XANES measured at the Ce LIII edge and magnetic susceptibility measurements. Both...
Koningsberger, D.C., Oudenhuijzen, M.K., Bitter, J.H.
A long-standing problem in the research of H2 chemisorption on supported Pt catalysts is the unclarity about the difference in nature of the Pt-H bonding for weakly and strongly bonded hydrogen. On...
Koningsberger, D.C., Lemaux, S., Bensaddik, A., Bitter, J.H.
Standard EXAFS analysis on CexZr1-xO2 mixed oxides leads to incorrect structural parameters. A comparison of XRD Rietveld analysis with an EXAFS study of a Y-doped reference compound and a...
Koningsberger, D.C., Tromp, M., Bokhoven, J.A. Van, Garriga Oostenbrink, M.T., Bitter, J.H., Jong, K.P. De
The activity and selectivity of hydroisomerization of n-hexane over Pt/mordenite is strongly influenced by acid leaching. The activity increases and the selectivity changes to favor primary products....
Koningsberger, D.C., Oudenhuijzen, M.K., Bitter, J.H., Ramaker, D.E.
Geometrical and electronic effects induced by hydrogen chemisorption on supported Pt particles are studied by analysing the PtH anti-bonding shape resonance. The fundamental principles of a new...
Koningsberger, D.C., Battiston, A.A., Bitter, J.H.
We have characterized, with emphasis on XAFS spectroscopy, one of the most promising DeNOx catalysts, i.e., Fe/ZSM5 prepared through the FeCl_{3} sublimation technique. XAFS is a very useful tool for...
The Assembling of a Catalytic Active Copper Site, in Solution, Followed by EXAFS (1999)
Koningsberger, D.C., Bitter, J.H., Mojet, B.L., Janssen, M.D., Grove, D.M., Koten, G. Van
The assembling of a catalytic active copper site, in solution, followed by EXAFS (1999)
Koten, G. Van, Bitter, J.H., Mojet, B.L., Janssen, M.D., Grove, D.M., Koningsberger, D.C.
Deactivation and Coke Accumulation during CO2/CH4 Reforming over Pt Catalysts (1998)
Bitter, J.H., Seshan, K., Lercher, J.A.
The Deactivation of Pt catalysts used in the generation of synthesis gas via CO2/CH4 reforming depends strongly on the support and the metalparticle size. Methods of Physicochemical characterization...
Design of Stable Catalysts for Methane-Carbon Dioxide Reforming (1998)
Seshan, K., Bitter, J.H., Lercher, J.A.
PtZrO2 is an active and stable catalyst for methane- carbon dioxide reforming reaction. The reaction between CO2 and CH4 to yield synthesis gas might proceed vie two different pethways. At high...
Mono and bifunctional pathways of CO2/CH4 reforming over Pt and Rh based catalysts (1997)
Bitter, J.H., Seshan, K., Lercher, J.A.
Despite the high thermodynamic driving force to form coke under the reaction conditions applied Pt/ZrO2 and Rh supported on y-Al2O3 and ZrO2 are active and stable catalysts for CO2/CH4 reforming....
The state of Zirconia Suported Platinum Catalysts for CO2/CH4 Reforming (1997)
Bitter, J.H., Seshan, K., Lercher, J.A.
In Pt/ZrO2 catalysts used for CO2/CH4 reforming to syngas, not all accessible Pt contributes equally to the activity of the catalyst. The cataalytic activity is determined by the accessibility of Pt...
Bitter, J.H., Nefkens, G.H.L., Zwanenburg, B.
Several strigol analogues with modifications in the D-ring were synthesized and assayed for germination stimulatory activity of seeds of Striga hermothica and Orobanche crenata. All of these D-ring...
The state of zirconia supported platinum catalysts for CO2/CH4 reforming (1997)
Bitter, J.H., Seshan, K., Lercher, J.A.
In Pt/ZrO2catalysts used for CO2/CH4reforming to syngas, not all accessible Pt contributes equally to the activity of the catalyst. The catalytic activity is determined by the accessibilityof Pt on...
Bitter, J.H., Hally, W., Seshan, K., Ommen, J.G. Van, Lercher, J.A.
Pt supported on y-Al2O3, TiO2 and ZrO2 are active catalysts for the CO2 reforming of methane to synthesis gas. The stability of the catalysts increased in the order Pt / y-Al2O3 < Pt / TiO2 < Pt /...
Design of stable catalysts for methane-carbon dioxide reforming (1996)
Lercher, J.A., Bitter, J.H., Hally, W., Niessen, W., Seshan, K.
The activity and stability of catalysts for methane-carbon dioxide reforming depend subtly upon the support and the active metal. Methane decomposes to carbon and hydrogen, forming carbon on the...
Bitter, J.H., Hally, W., Seshan, K., Ommen Van, J.G., Lercher, J.A.
Pt supported on ¿-Al2O3, TiO2 and ZrO2 are active catalysts for the CO2 reforming of methane to synthesis gas. The stability of the catalysts increased in the order Pt/¿-A12O3 < Pt/TiO2 < Pt/ZrO2....
Problem of coke formation on Ni/ZrO2 catalysts during the carbon dioxide reforming of methane (1994)
Hally, W., Bitter, J.H., Seshan, K., Lercher, J.A., Ross, J.R.H.
The suitability of zirconia-based nickel catalysts for the CO2 reforming reaction has been investigated with emphasis on the stability of the cattalysts under conditions favourable towards carbon...