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document
Hoefnagel, A.J. (author), Van Bekkum, H. (author)
The invention relates to a process for the preparation of polyhydroxybenzophenones by treating benzoic acid or a derivative thereof with a polyhydroxybenzene or a derivative thereof in the presence of a large pore zeolite as a catalyst.
patent 1993
document
Jansen, J.C. (author), Legein, C.H. (author), Calis, H.P.A. (author), Van Bekkum, H. (author), Gerritsen, A.W. (author), Van den Bleek, M. (author)
The invention relates to a catalyst system of the structured type, in which a structured support is covered with a layer of molecular sieve crystals and/or modifications thereof. These crystals have substantially the same orientation relative to the support surface. The invention further relates to a reactor in which this catalyst system is...
patent 1994
document
Van Brussel, D.L. (author), Batelaan, J.G, (author), Peters, A. (author), Van Bekkum, H. (author)
Abstract of corresponding document: US 5777090 (A) PCT No. PCT/EP94/04097 Sec. 371 Date Jun. 6, 1996 Sec. 102(e) Date Jun. 6, 1996 PCT Filed Dec. 9, 1994 PCT Pub. No. WO95/15984 PCT Pub. Date Jun. 15, 1995Disclosed is carboxymethyl inulin having a degree of substitution (DS) ranging from 0,15 to 2,5, preferably from 0,5 to 1,5, a process for the...
patent 1995
document
Geus, E.R. (author), Jansen, J.C. (author), Jaspers, B.C. (author), Schoonman, J. (author), Van Bekkum, H. (author)
Abstract of WO 9213631 (A1) Inorganic composite membrane containing molecular sieve crystals, comprising a macroporous support to which molecular sieve crystals and modifications thereof have been applied substantially as a monolayer, said crystals and modifications thereof having been oriented so that, to a substantial extent, the pores of the...
patent 1992
document
Wiersma, A. (author), Sandt, E.J.A. (author), Van Bekkum, H. (author), Makkee, M. (author), Moulijn, J.A. (author)
Abstract of NL 9401574 (A) The invention relates to a method for preparing difluoromethane, wherein dichlorodifluoromethane or monochlorodifluoromethane is brought into contact with hydrogen in the presence of palladium on activated carbon, wherein the loading of the palladium on the activated carbon is 0.1-4.0 wt.%, based on the total weight,...
patent 1996
document
Van den Berg, R. (author), Peters, J.A. (author), Van Bekkum, H. (author)
Abstract of NL 9301614 (A) The invention relates to a method for the selective oxidative degradation of saccharides, wherein the oxidation is carried out with a peroxide, preferably hydrogen peroxide, in a basic medium in the presence of boric acid or a borate. The starting compound is preferably a saccharide which forms less stable borate...
patent 1995
document
Van der Puil, N. (author), Calis, H.P.A. (author), Oudshoorn, O.L. (author), Jansen, J.C. (author), Van Bekkum, H. (author)
The invention relates to the preparation of composite catalysts consisting of a support material and a molecular sieve crystal phase that is present on the surface of the support material. The molecular sieve crystals can, as desired, be provided both on the inside and on the outside of a porous support material. With the method according to the...
patent 1998
document
De Goede, A.T.J. (author), Van der Leij, I.G. (author), Van der Heijden, A.M. (author), Van Rantwijk, F. (author), Van Bekkum, H. (author)
Abstract of WO 9636640 (A2) The present invention relates to a process for the preparation of alkyl glycosides by reacting an alcohol with a saccharide or a lower-alkyl glycoside in the presence of a catalyst, wherein the catalyst is a mesoporous silica-based molecular sieve material. This process allows to produce alkylated mono- and...
patent 1996
document
Geus, E.R. (author), Den Exter, J. (author), Van Bekkum, H. (author)
Abstract of NL 9101148 (A) The present invention relates to an inorganic composite membrane which contains molecular-sieve crystals and comprises a porous support, more particularly a support converted into the form of a membrane module, on which molecular-sieve crystals are disposed which have been obtained by a reaction of a precursor of said...
patent 1993
document
Hoefnagel, A.J. (author), Van Bekkum, H. (author)
Abstract of WO 9414746 (A1) The invention relates to a method for separating the ortho- and para-isomers of hydroxymandelic acid or a salt thereof. For that purpose the starting material is a solid mixture of these ortho- and para-isomers in the alkali metal salt form. This mixture is extracted with a polar, aprotic, organic solvent. Then this...
patent 1994
document
Ito, E. (author), Van den Bleek, C.M. (author), Van Bekkum, H. (author), Jansen, J.C. (author), Hultermans, R.J. (author), Lugt, P.M. (author)
The invention relates to a process for treating nitrogen oxide-containing gas substantially having a temperature in the range of 300-560 DEG C, for instance exhaust gases of gas engines or off-gases of power plants, in which the gas is passed over a cerium-containing zeolite catalyst in the presence of substantially an excess of a NH-containing...
patent 1995
document
Janssen, J.C. (author), Van Bekkum, H. (author)
Abstract of WO 9300155 (A1) A method of applying molecular sieve crystals to a support, wherein the surface of the support is brought into oxidic condition, whereafter the support is contacted with a solution of the molecular sieve-forming compound or compounds or precursors thereof, whereafter crystallization on the surface is effected.
patent 1993
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