Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Volker Engels"'
Autor:
J Jan Meuldijk, Andrew E. H. Wheatley, F. Benaskar, Evgeny V. Rebrov, N.G. Patil, JC Jaap Schouten, Volker Engels, Lumbertus A. Hulshof, Volker Hessel
Publikováno v:
Industrial & Engineering Chemistry Research. 52:18206-18214
A parametric study of the factors that influence C–O bond formation reactions has been carried out to elucidate the mechanism by which copper mediates the Ullmann-type nucleophilic aromatic substitution (SNAr) of 4-chloropyridine with potassium phe
Autor:
Volker Engels
Publikováno v:
MÜLL und ABFALL.
Publikováno v:
Frontiers in Materials, Vol 3 (2016)
An in-depth understanding of the growth process of single-walled carbon nanotubes is of vital importance to the control of the yield of the material and its carbon structure. Using a nickel/silica (Ni/SiOx) catalyst, we have conducted a series of gro
Autor:
J.C. Schouten, Evgeny V. Rebrov, Volker Hessel, N.G. Patil, F. Benaskar, Volker Engels, L.A. Hulshof, J Jan Meuldijk, Andrew E. H. Wheatley
Publikováno v:
Benaskar, F, Patil, N G, Meuldijk, J, Hulshof, L A, Hessel, V, Schouten, J C, Engels, V, Wheatley, A E H & Rebrov, E V 2012, ' Microwave-assisted Cu-catalyzed Ullmann ether synthesis in a continuous-flow milli-plant ', Chemical Engineering Journal, vol. 207-208, pp. 426-439 . https://doi.org/10.1016/j.cej.2012.06.147
Chemical Engineering Journal, 207-208, 426-439. Elsevier
Chemical Engineering Journal, 207-208, 426-439. Elsevier
The combination of milli-scale processing and microwave heating has been investigated for the Cu-catalyzed Ullmann etherification in fine-chemical synthesis, providing improved catalytic activity and selective catalyst heating. Wall-coated and fixed-
Autor:
Andrew E. H. Wheatley, G. M. Jones, Sally R. Boss, Junfeng Geng, Volker Engels, James A. Elliott
Publikováno v:
Current Nanoscience. 7:315-322
The catalytic growth of multi-wall carbon nanotubes on carbon paper is reported. The study employed three cobalt carbonyl clusters as catalyst precursors. These were deposited on graphitic paper prior to chemical vapour deposition (CVD) of methane or
Autor:
LN Lidia Protasova, Sy Pung, JC Jaap Schouten, Maciej Cabaj, Aeh Wheatley, Kwang-Leong Choy, Evgeny V. Rebrov, Volker Engels
Publikováno v:
Catalysis Science & Technology, 1(5), 768-777. Royal Society of Chemistry
Vertically aligned ZnO nanowires (NWs) with a length of 1.5–10 μm and a mean diameter of ca. 150 nm were grown by chemical vapour deposition onto a c-oriented ZnO seed layer which was deposited by atomic layer deposition on Si substrates. The subs
Autor:
S. H. Dalal, Aron Robert Rachamim, Junfeng Geng, Andrew E. H. Wheatley, Volker Engels, Ángel Berenguer-Murcia, Sieglinde M.-L. Pfaendler, Andrew J. Flewitt
Publikováno v:
Nanoscale Research Letters
Nanoscale Research Letters, Vol 5, Iss 5, Pp 904-907 (2010)
Nanoscale Research Letters, Vol 5, Iss 5, Pp 904-907 (2010)
ZnO nanowires have been grown by chemical vapour deposition (CVD) using PdZn bimetallic nanoparticles to catalyse the process. Nanocatalyst particles with mean particle diameters of 2.6 ± 0.3 nm were shown to catalyse the growth process, displaying
Autor:
Volker Engels, David A. Jefferson, N.G. Patil, Evgeny V. Rebrov, Volker Hessel, JC Jaap Schouten, L.A. Hulshof, J Jan Meuldijk, F. Benaskar, Andrew E. H. Wheatley
Publikováno v:
Tetrahedron Letters, 51(2), 248-251. Elsevier
The action of nanoparticulate copper catalysts with a mean particle size of 10 nm in the Ullmann ether synthesis is reported using multimode microwave heating and employing stable chloropyridine salts and unactivated phenol, with stabilized copper na
Publikováno v:
Dalton Transactions, 39, 6496-6502. Royal Society of Chemistry
A modified polyol-based reduction method in ethylene glycol that incorporates poly(N-vinylpyrrolidone) (PVP, M(av) = 10,000; 40,000; 55,000) as polymeric anti-agglomerant alongside a reducing additive (N(2)H(4) x H(2)O, NaBH(4), NaH(2)PO(2) x H(2)O)
Autor:
Ángel Berenguer-Murcia, Andrew E. H. Wheatley, Volker Engels, David A. Jefferson, Brian F. G. Johnson
Publikováno v:
Materials Science Forum. :13-17
Novel catalytic systems based on PdZn alloys have been synthesized by polyol reduction over the entire compositional range [1, 2] and characterized by means of HRTEM, EDS and ICP. The expected bulk compositions were reproducible to within a 2 mol% ma