Zobrazeno 1 - 10 of 12 pro vyhledávání: '"Sankhanilay Roy Chowdhury"'
1
Influence of porous substrate on mesopore structure and water permeability of surfactant templated mesoporous silica membranes
Autor: Dave H.A. Blank, Alisia M. Peters, Sankhanilay Roy Chowdhury, Johan E. ten Elshof
Publikováno v: Journal of membrane science, 279(1-2), 276-281. Elsevier
The formation of silica films via sol–gel route on disordered mesoporous and macroporous supports is reported. These films are structurally characterised by TEM, XRD, XPS and permporometry. It has been found that the ordered mesoporous silica layer
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3d2d85e4ed52c7bd999f08931c9a0fe4
https://doi.org/10.1016/j.memsci.2005.12.015
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2
Pore size and surface chemistry effects on the transport of hydrophobic and hydrophilic solvents through mesoporous γ-alumina and silica MCM-48
Autor: Sankhanilay Roy Chowdhury, Dave H. A. Blank, Johan E. ten Elshof, Riaan Schmuhl, Klaas Keizer
Publikováno v: Journal of membrane science, 225(1-2), 177-186. Elsevier
The structural and solvent transport properties of supported mesoporous γ-alumina and MCM-type silica membranes are reported. Templated mesoporous silica layers and powders were characterized by XRD, permporometry, XPS and BET measurements. The resu
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c08a0c3a26e7b89af3eb828ddae5ad29
https://doi.org/10.1016/j.memsci.2003.07.018
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3
Fine-tuning and recycling of homogeneous tungstate and polytungstate epoxidation catalysts
Autor: Ronny Neumann, Jan Reedijk, Sankhanilay Roy Chowdhury, Dorit Sloboda Rozner, Rui Zhang, Waldemar Adam, Peter T. Witte, Johan E. ten Elshof, Patrick Gamez, Paul L. Alsters
Publikováno v: Mechanisms in Homogeneous and Heterogeneous Catalytic Epoxidation, 415-428
STARTPAGE=415;ENDPAGE=428;TITLE=Mechanisms in Homogeneous and Heterogeneous Catalytic Epoxidation
Publisher Summary This chapter reviews work on epoxidations with aqueous dihydrogen peroxide catalyzed by tungstate and polytungstate catalysts. The activity of the sandwich polyoxometalate (sandwich POM) in cyclooctene epoxidation is compared to oth
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::758f72fe1061350d9f7790a978c718ed
https://research.utwente.nl/en/publications/c3ee74d5-059c-4718-a2b7-0f32c6693c94
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4
Synthesis and structural characterization of EMT-type membranes and their performance in nanofiltration experiments
Autor: Sankhanilay Roy Chowdhury, Valentin Valtchev, Jacques De Lamare
Publikováno v: Journal of Membrane Science
Journal of Membrane Science, Elsevier, 2008, 314 (1-2), pp.200-205
Journal of Membrane Science, 2008, 314 (1-2), pp.200-205. ⟨10.1016/j.memsci.2008.01.038⟩
Journal of Membrane Science, Elsevier, 2008, 314 (1-2), pp.200-205. ⟨10.1016/j.memsci.2008.01.038⟩
The present paper reports the first synthesis of the EMT-type zeolite membranes on a porous α-alumina support. Structural characterization was carried out by X-ray diffraction (XRD), scanning electron microscopy (SEM) and permporometry techniques. D
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::75633540773200ff3b81c4b7bd18e734
https://hal.archives-ouvertes.fr/hal-00298488
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5
Influence of the Time-Temperatur-Profile on Powder Characteristics of Nanocrystalline Anatase (TiO2) produced by Chemical Vapor Synthesis
Autor: Erdal Akyildiz, Markus Winterer, Andreas Gondorf, Sankhanilay Roy Chowdhury, Ruzica Djenadic, Marina Spasova
Publikováno v: MRS Proceedings. 1056
Chemical Vapor Synthesis (CVS) is the conversion of molecular species into nanocrystalline particles by chemical reactions in a gas flow reactor. Pure anatase nanoparticles are generated in a hot wall reactor from titanium isopropoxide using differen
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bb03e1fff452802ce42f75c5113ba2eb
https://doi.org/10.1557/proc-1056-hh08-07
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6
Gas phase synthesis of zinc oxide nanocrystals and their surface modification using small and large acidic ligands
Autor: Moazzam Ali, D. Sudfeld, Markus Winterer, Sankhanilay Roy Chowdhury
Publikováno v: MRS Proceedings. 1035
Zinc oxide nanocrystals are synthesized using the chemical vapor synthesis (CVS) technique. Diethylzinc is used as zinc precursor. Synthesized zinc oxide nanocrystals are characterized by X-ray diffraction (XRD), nitrogen adsorption and desorption, t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c0bb3ee4acf764bb0020474994df8961
https://doi.org/10.1557/proc-1035-l13-01
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7
Factors influencing the transport of short-chain alcohols through mesoporous gamma-alumina membranes
Autor: Sankhanilay Roy Chowdhury, Johan E. ten Elshof, David H.A. Blank
Publikováno v: The journal of physical chemistry. B. 109(47)
The pressure-driven transport of water, ethanol, and 1-propanol through supported gamma-alumina membranes with different pore diameters is reported. Water and alcohols had similar permeabilities when they were transported through gamma-alumina membra
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::144d741776c9ffbe4663bfcfb59efc28
https://pubmed.ncbi.nlm.nih.gov/16853881
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8
Recovery of homogeneous polyoxometallate catalysts from aqueous and organic media by a mesoporous ceramic membrane without loss of catalytic activity
Autor: Sankhanilay Roy Chowdhury, Peter T. Witte, Johan E. ten Elshof, Paul L. Alsters, Dave H.A. Blank
Publikováno v: Chemistry : a European journal, 12(11), 3061-3066. Wiley-VCH Verlag
The recovery of homogeneous polyoxometallate (POM) oxidation catalysts from aqueous and non-aqueous media by a nanofiltration process using mesoporous gamma-alumina membranes is reported. The recovery of Q(12)[WZn(3)(ZnW(9)O(34))(2)] (Q=[MeN(n-C(8)H(
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b218bc9cab8151d41a50c246d8fb3eda
https://pubmed.ncbi.nlm.nih.gov/16440385
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9
Effect of trace amounts of water on organic solvent transport through gamma-alumina membranes with varying pore sizes
Autor: David H.A. Blank, Sankhanilay Roy Chowdhury, Johan E. ten Elshof, Klaas Keizer
Publikováno v: Langmuir, 20(11), 4548-4552. American Chemical Society
The transport behavior of toluene and n-hexane in gamma-alumina membranes with different pore diameters was studied. It was shown that the permeability of water-lean hexane and toluene is in agreement with Darcy's law down to membrane pore diameters
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::216411e21e40289b3c375f28ebdb3e4e
https://pubmed.ncbi.nlm.nih.gov/15969164
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10
Si-compatible ion selective oxide interconnects with high tunability
Autor: Dave H. A. Blank, Sankhanilay Roy Chowdhury, J. Sekulic, Cees J.M. van Rijn, Albert van den Berg, Johan E. ten Elshof, Klaas Keizer, Riaan Schmuhl
Publikováno v: Advanced materials, 16(11), 900-904. Wiley-Blackwell
A new class of porous oxide interconnects with a regularly perforated SiN support structure is presented here. The method is demonstrated by constructing -alumina, MCM-48 silica (see Figure), and amorphous titania interconnects. Ionic transport throu
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7d73a2589bd586f37c7b303f6044d569
https://research.utwente.nl/en/publications/f8b44481-3dc5-4162-9d73-2c8dcc40e26d
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