Searched for: faculty%3A%22Applied%255C%252BSciences%22
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Skupien, E. (author), Berger, R.J. (author), Santos, V.P. (author), Gascon, J. (author), Makkee, M. (author), Kreutzer, M.T. (author), Kooyman, P.J. (author), Moulijn, J.A. (author), Kapteijn, F. (author)
Benzyl alcohol oxidation was carried out in toluene as solvent, in the presence of the potentially inhibiting oxidation products benzaldehyde and benzoic acid. Benzoic acid, or a product of benzoic acid, is identified to be the inhibiting species. The presence of a basic potassium salt (K2CO3 or KF) suppresses this inhibition, but promotes the...
journal article 2014
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Li, J. (author), Soares, H.S.M.P. (author), Moulijn, J.A. (author), Makkee, M. (author)
The hydrolysis and hydrogenation of cellobiose (4-O-b-D-glucopyranosyl-D-glucose) in ZnCl2_4H2O solvent was studied to optimize the conditions for conversion of lignocellulose (the most abundant renewable resource) into sorbitol (D-glucitol). Water at neutral pH does not allow hydrolysis of cellobiose under the conditions of the experiments (up...
journal article 2013
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Li, J. (author), Spina, A. (author), Moulijn, J.A. (author), Makkee, M. (author)
The sorbitol conversion in a molten salt hydrate medium (ZnCl2; 70 wt% in water) was studied. Dehydration is the main reaction, initially 1,4- and 3,6-anhydrosorbitol are the main products that are subsequently converted into isosorbide; two other anhydrohexitols, (1,5- and 2,5-), formed are in less amounts and do not undergo further dehydration...
journal article 2013
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Bakker, J.J.W. (author), Zieverink, M.M.P. (author), Kapteijn, F. (author), Moulijn, J.A. (author), Kreutzer, M.T. (author)
Segmented flow in standard GC capillary columns, with a heterogeneous Pd catalyst on the walls, gave rapid information about catalytic processes in them. The residence time and conversion was monitored visually, greatly simplifying bench-scale optimization. Examples show the benefits of the elimination of pore diffusion and axial dispersion....
journal article 2011
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Almeida, A.R. (author), Berger, R. (author), Moulijn, J.A. (author), Mul, G. (author)
The rate of cyclohexane photo-catalytic oxidation to cyclohexanone over anatase TiO2 was studied at temperatures between 23 and 60ºC by in situ ATR-FTIR spectroscopy, and the kinetic parameters were estimated using a microkinetic model. At low temperatures, surface cyclohexanone formation is limited by cyclohexane adsorption due to unfavorable...
journal article 2010
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Carneiro, J.T. (author), Yang, C.C. (author), Moma, J.A. (author), Moulijn, J.A. (author), Mul, G. (author)
Gold deposition on Hombikat UV100 was found to negatively affect the activity of this Anatase catalyst in selective photo-oxidation of cyclohexane. By ammonia TPD and DRIFT spectroscopy it was determined that the Au deposition procedure leads to a significant decrease in OH-group density (mol m?2 BET) on Hombikat, suggesting that the amount of...
journal article 2009
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Groen, J.C. (author), Moulijn, J.A. (author), Perez-Ramirez, J. (author)
The invention is directed to a process for the preparation of a mesoporous mordenite, which process comprises subjecting a non-dealuminated mordenite having an atomic ratio of framework Si-to-Al of least, to an alkaline treatment in order to create mesoporosity by removal of silicon, to various mesoporous mordenites and to their use.
patent 2008
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Shibata, H. (author), Moulijn, J.A. (author), Mul, G. (author)
We report on the discovery that paraffins and olefins up to C6 hydrocarbons can be obtained in CO2 electroreduction at room temperature and atmospheric pressure by application of a commercially available Cu-electrode (Eurofysica), provided pretreatment by electropolishing is avoided. The product distribution follows the Schultz–Flory...
journal article 2008
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De Lathouder, K.M. (author), Smeltink, M.W. (author), Straathof, A.J.J. (author), Paasman, M.A. (author), Van de Sandt, E.J.A.X. (author), Kapteijn, F. (author), Moulijn, J.A. (author)
The objective of this work was to develop a hydrogel-coated monolith for the entrapment of penicillin G acylase (E. coli, PGA). After screening of different hydrogels, chitosan was chosen as the carrier material for the preparation of monolithic biocatalysts. This protocol leads to active immobilized biocatalysts for the enzymatic hydrolysis of...
journal article 2008
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Van Miltenburg, A. (author), Gascon, J. (author), Zhu, W. (author), Kapteijn, F. (author), Moulijn, J.A. (author)
The adsorption of propylene and propane on zeolite NaX with and without a saturated (36 wt%) amount of CuCl have been investigated. The single component adsorption isotherms could be well described with a Dual-Site Langmuir model. The dispersion of CuCl results in a decrease of the maximum adsorption capacity of the zeolite for both components....
journal article 2008
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Quintanilla, A. (author), Casas, J.A. (author), Rodriquez, J.J. (author), Kreutzer, M.T. (author), Kapteijn, F. (author), Moulijn, J.A. (author)
Wet oxidation of phenol over an Fe/activated carbon catalyst has been studied in a trickle-bed reactor in the following operational window: inlet C phenol=0.5 and 1 g/L, T=100-127 ºC, PT=3-8 atm, W=0-4.8 g, QL=0.125-2 mL/min and QO2=91.6 NmL/min. The experiments were carried out in the absence of mass transfer limitations. Oxidation and...
journal article 2007
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Krishna, K. (author), Bueno-Lopez, A. (author), Makkee, M. (author), Moulijn, J.A. (author)
journal article 2007
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Silberova, B.A.A. (author), Makkee, M. (author), Moulijn, J.A. (author)
journal article 2007
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Melian, C.I. (author), Kapteijn, F. (author), Moulijn, J.A. (author)
The invention concerns a process for the production of a molecular sieve material by growing the molecular sieve material structure in the presence of a template for the pore structure, followed by removal of the template from the molecular sieve material, in which process the template is removed by oxidation of the template material using an...
patent 2006
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Melian, C.I. (author), Kapteijn, F. (author), Moulijn, J.A. (author)
The invention is directed to a process for liberating metallic cations from metallo-organic compounds, said process comprising contacting an aqueous solution of the metallo-organic compound with an oxidising agent, thereby oxidising the organic component and obtaining the free cation
patent 2006
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Moulijn, J.A. (author), Perez-Ramirez, J. (author), Van Diepen, A. (author), Kreutzer, M.T. (author), Kapteijn, F. (author)
The relevance of levels in space and time for chemical engineering are discussed. Catalysis Engineering is introduced as an emerging new discipline. In Catalysis Engineering three levels can be distinguished: the microlevel focusing on molecules and catalytic sites, the mesolevel focusing on the catalyst particle and the catalytic reactor, and...
journal article 2003
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Van Hardeveld, R. (author), Makkee, M. (author), Moulijn, J.A. (author), Jelles, S.J. (author)
The invention relates to a method for the oxidation of carbon- and/or hydrocarbon- and/or combustable organic compounds containing liquid or solid particulate contaminants in gas streams, more in particular soot in exhaust gasses of diesel engines, comprising the treatment of said gas streams in a turbulent flow precipitator, of which at least...
patent 2001
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Sie, S.T. (author), Cybulski, A. (author), Moulijn, J.A. (author)
PCT No. PCT/NL93/00231 Sec. 371 Date Jul. 21, 1995 Sec. 102(e) Date Jul. 21, 1995 PCT Filed Nov. 4, 1993 PCT Pub. No. WO94/09901 PCT Pub. Date May 11, 1994There is described a catalyst element (1) consisting of an integral whole having channels (2) extending therethrough. These channels (2) have, in circumferential sense of the cross section...
patent 2000
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Makkee, M. (author), Kapteijn, F. (author), Moulijn, J.A. (author)
A reactor vessel (1) comprises a reactor body (2) through which channels (3) are provided whose surface comprises longitudinal inwardly directed parts (4) and is provided with a catalyst (6), as well as buffer bodies (8, 12) connected to the channels (3) on both sides of the reactor body (2) and comprising connections for supplying (9, 10, 11)...
patent 1999
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Bakker Wridzer, J.W. (author), Kapteijn, F. (author), Moulijn, J.A. (author)
The invention relates to a rotary reactor consisting of a number of tubular reaction compartments (A), each provided with a first end and a second end, a ceramic first reactor end plate (B) in which said first ends are received, and a second end plate (B) in which said second ends are received, which end plates (B, B) are further provided with...
patent 1998
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