Zobrazeno 1 - 10
of 28
pro vyhledávání: '"IM Ionel Ciobica"'
Publikováno v:
ACS Catalysis. 7:1984-1992
Fischer–Tropsch synthesis of hydrocarbons from CO and H2 is an established industrial process, during which the C–O bond must break. The preferred mechanism and sites at which CO is activated and hydrocarbon products are formed remains under deba
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::390474286b577d8f2c2084e9c04f75b5
https://doi.org/10.1021/acscatal.6b02843
https://doi.org/10.1021/acscatal.6b02843
Autor:
Jan van de Loosdrecht, J.W. Niemantsverdriet, D.J. Moodley, N.S. Govender, IM Ionel Ciobica, A.M. Saib, C. J. Weststrate, Gibson Philip
Publikováno v:
ACS Catalysis. 6:3840-3855
Although Fischer-Tropsch synthesis (FTS) was discovered more than 90 years ago, it remains a fascinating topic, having relevance from both an industrial and academic perspective. FTS based on cobalt and iron catalysts was studied in depth during an e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53bde5dd7b7f168958858311eab751ef
https://doi.org/10.1021/acscatal.6b00595
https://doi.org/10.1021/acscatal.6b00595
Publikováno v:
Catalysis Today. 261:48-59
Cobalt-based Fischer–Tropsch (FT) catalysts typically contain reactive cobalt metal nanoparticles on support materials. Such metal nanoparticles are expected to have properties that are strongly size-dependent. Noting the size-dependence of the Co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::86cd09aa292f5a57a83f27330dbf20cf
https://doi.org/10.1016/j.cattod.2015.07.052
https://doi.org/10.1016/j.cattod.2015.07.052
Publikováno v:
Surface Science, 653, 82-87. Elsevier
This computational study of carbon induced reconstruction of Co surfaces demonstrates that surface reconstruction is stable in the presence of a hydrogen at low coverage. These reconstructions can create new sites that allow for low activation energy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e1a72d9f0b0c26c718e66ce3d1c5a487
https://doi.org/10.1016/j.susc.2016.06.003
https://doi.org/10.1016/j.susc.2016.06.003
Autor:
H. Preston, IM Ionel Ciobica, A.M. Saib, J.W. Niemantsverdriet, D. Kistamurthy, C.J. Weststrate, W. Janse van Rensburg, D.J. Moodley
Publikováno v:
Catalysis Today, 275, 127-134. Elsevier
Oxygenated compounds have previously been detected on spent Co/Al2O3FTS catalyst and have also been proposed to be precursors for carbon formation. Build-up of polymeric carbon on the catalyst during Fischer-Tropsch synthesis (FTS) can negatively inf
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f7e3769ea2cd3901ee09e4913cc52b2b
https://research.tue.nl/en/publications/3bd49a7f-5ef5-410a-86e3-3158a8b05963
https://research.tue.nl/en/publications/3bd49a7f-5ef5-410a-86e3-3158a8b05963
Autor:
Jan-Albert van den Berg, Pieter van Helden, IM Ionel Ciobica, Werner Janse van Rensburg, Jan van de Loosdrecht, Melissa A. Petersen
Publikováno v:
Faraday discussions. 197
A multi-site microkinetic model for the Fischer–Tropsch synthesis (FTS) reaction up to C2 products on a FCC cobalt catalyst surface is presented. This model utilizes a multi-faceted cobalt nanoparticle model for the catalyst, consisting of the two
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb45439da4aabfc50eaa7e60197ae331
https://pubmed.ncbi.nlm.nih.gov/28186212
https://pubmed.ncbi.nlm.nih.gov/28186212
Autor:
B.H. Sigwebela, J.W. Niemantsverdriet, D.J. Moodley, C. J. Weststrate, IM Ionel Ciobica, M. M. Hauman, A.M. Saib, J. van de Loosdrecht
Publikováno v:
Catalysis Today, 154(3-4), 271-282. Elsevier
Cobalt-based Fischer–Tropsch synthesis (FTS) catalysts are an integral part of the gas-to-liquid (GTL) process. Due to the cost of both cobalt and noble metals, which are often used as promoters, an extended catalyst life is required to make the pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f3987d338b9cbf996fd5db984ee8061a
https://doi.org/10.1016/j.cattod.2010.02.008
https://doi.org/10.1016/j.cattod.2010.02.008
Publikováno v:
Surface Science, 602(1), 17-27. Elsevier
Coverage dependence adsorption of intermediates typical for syngas conversion is studied theoretically on fcc -cobalt surfaces. The fcc structure is relevant for cobalt particles active in this reaction. Emphasis on the analysis is on the thermodynam
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::54fcaa90a51d8cb087b92697d7dbe53d
https://doi.org/10.1016/j.susc.2007.09.060
https://doi.org/10.1016/j.susc.2007.09.060
Publikováno v:
Catalysis Today, 91-92, 177-180. Elsevier
Bulk and (1 0 0) surface vanadyl pyrophosphate, (VO)2P2O7, were analysed via periodic density functional theory calculations. Electronic structures were computed using the Perdew–Wang 91 functional, together with ultrasoft pseudopotentials and plan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e46dc2074ca6e9338512d0aa39c3985
https://doi.org/10.1016/j.cattod.2004.03.030
https://doi.org/10.1016/j.cattod.2004.03.030
Publikováno v:
Journal of Catalysis, 212(2), 136-144. Academic Press Inc.
Two reaction pathways for hydrocarbon chain-growth mechanisms over Ru(0001) in Fischer–Tropsch synthesis have been analyzed using periodic ab initio calculations for 25% coverage. Adsorption energies for the intermediates for the first two catalyti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1021098d3c303430d7c662adbbb1b389
https://doi.org/10.1006/jcat.2002.3742
https://doi.org/10.1006/jcat.2002.3742