Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Delfín Moronta"'
Autor:
Josmir Rodríguez, Joaquín L Brito, Raquel del Toro, Daniel Figueroa, Delfín Moronta, Susana Pinto-Castilla, Paulino J. Betancourt-Figueroa
Publikováno v:
Reaction Kinetics, Mechanisms and Catalysis. 128:935-947
Changes in the oxidation state and chemical environment of vanadium in poisoned and regenerated hydrotreatment (HDT) catalyst were followed by electron paramagnetic resonance (EPR). Oxovanadyltetraphenil porphyrin was used as model poison molecule on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f174db532962b3d8fce70777b165841c
https://doi.org/10.1007/s11144-019-01666-x
https://doi.org/10.1007/s11144-019-01666-x
Autor:
Joaquín L Brito, Ismael González, Ricardo Morales, Marta Mediavilla, Luis Melo, Delfín Moronta, Roger Solano
Publikováno v:
Microporous and Mesoporous Materials. 170:189-193
The purpose of this study was the preparation of Pt and Pt–Sn catalysts supported on a HY zeolite (Si/Al = 3) induced by microwave radiation as heating source. The solids were characterized by means of X-ray diffraction (XRD), elemental chemical an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e6a819d50ef5e591896845e2da59edf
https://doi.org/10.1016/j.micromeso.2012.11.032
https://doi.org/10.1016/j.micromeso.2012.11.032
Autor:
Aura Llanos, Marta Mediavilla, Husley Morales, Luis Melo, Alberto Albornoz, Roger Solano, Joaquín L Brito, Ángela B. Sifontes, Delfín Moronta
Publikováno v:
Microporous and Mesoporous Materials. 131:342-349
Three H-ZSM5 solids with Si/Al atomic ratios of 22, 71 and 96 were synthesized and characterized by X-ray diffraction (XRD), ICP-AES chemical analysis and nitrogen physisorption at −196 °C. These were employed as supports in the synthesis of Pt/H-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bebb2027d867a205ec02be7fbc4b8736
https://doi.org/10.1016/j.micromeso.2010.01.012
https://doi.org/10.1016/j.micromeso.2010.01.012
Autor:
Caribay Urbina, Nelson Manosalva, Rodney P. Feazell, Marisol C. Ortega, Mónica Bartolini, Carlos Chinea, Paulino Betancourt, Jhoanna Molina, Lindora D’Ornelas, Carlos E. Scott, Delfín Moronta, Alvaro J. Pardey
Publikováno v:
Catalysis Letters. 122:274-280
The synthesis, characterization, and catalytic properties of the zero-valent, group six metal complex formed by the reaction of [Mo(CO)3(CH3CN)3] and poly(4-vinylpyridine) (P(4-VP)) is described in this work. The pyridyl groups of the organic polymer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc0073b6368c3380bb6f717f1ee0f916
https://doi.org/10.1007/s10562-007-9331-2
https://doi.org/10.1007/s10562-007-9331-2
Autor:
Caribay Urbina, Alcides D. Rojas, Paulino Betancourt, CarlosChinea, Alvaro J. Pardey, Delfín Moronta, Clementina Longo, Carlos E. Scott, Jorge Yáñez
Publikováno v:
Polyhedron. 24:511-519
The formation of transition metal complexes between dichlorocopper(II) and a poly(4-vinylpyridine)/divinylbenzene(2%) polymeric matrix is described in this contribution. The nitrogen atom of the pyridine groups of the organic polymer is coordinativel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df101c913d2523fb3a3ae62c9cb662a6
https://doi.org/10.1016/j.poly.2004.12.014
https://doi.org/10.1016/j.poly.2004.12.014
Autor:
Patrick Rodrı́guez, Santiago Marrero, Carolina Pfaff, Paulino Betancourt, Mary Labadı́, Delfín Moronta, Alberto Albornoz, Joaquín L Brito
Publikováno v:
Catalysis Communications. 5:79-82
Vanadium nitride and carbide were synthesized by the temperature-programmed reaction of ammonium vanadate (NH 4 VO 3 ) with pure NH 3 and 20% CH 4 in H 2 , respectively. Based on the XRD results, the catalysts showed VN and V 8 C 7 /V 4 C 3 with an a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3bc7397d23aa74d19cb3425b9a908cf1
https://doi.org/10.1016/j.catcom.2003.11.011
https://doi.org/10.1016/j.catcom.2003.11.011
Autor:
E. Rodriguez, Aura Llanos, Luis A. Albornoz, Joaquín L Brito, Luis Melo, Delfín Moronta, Ricardo Morales
Publikováno v:
Journal of Molecular Catalysis A: Chemical. 203:277-286
A study was carried out on the reaction of acetone transformation over bifunctional monometallic (Pt/H[Al]ZSM5, Sn/H[Al]ZSM5) and bimetallic (PtSn/H[Al]ZSM5) catalysts with variation of their tin atomic fraction ( X Sn =number of Sn moles/number of S
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d4c9b9ee4797b6039681004db48593c
https://doi.org/10.1016/s1381-1169(03)00367-4
https://doi.org/10.1016/s1381-1169(03)00367-4
Publikováno v:
Radiation Physics and Chemistry. 67:453-457
Electron spin resonance studies on polystyrene (PS), polypropylene (PP) and on 80/20 PS/PP blends with and without compatibilizer (block SBS), at 7.5 wt%, irradiated with gamma rays from a 60 Co source at a dose rate of 4.8 kGy/h and at integral irra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::233d1034af5dce70856e36f111fefa32
https://doi.org/10.1016/s0969-806x(03)00084-7
https://doi.org/10.1016/s0969-806x(03)00084-7
Publikováno v:
Catalysis Today. 78:339-344
The influence of the use of ethylenediamine in the preparation of iron–vanadium catalyst for toluene hydrogenation (HYD) and pyridine hydrodenitrogenation (HDN) has been studied. Both HYD and HDN activities increased significantly with Fe incorpora
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed86ef7da24bf501cec9d4e94911db0e
https://doi.org/10.1016/s0920-5861(02)00307-3
https://doi.org/10.1016/s0920-5861(02)00307-3
Autor:
M.L. Cubeiro, P.R. Sojo, Delfín Moronta, Y.Ng Lee, M.J. Pérez-Zurita, Mireya R. Goldwasser, F. Gonzalez-Jimenez, E. Pietri, V.E. Dorantes
Publikováno v:
Journal of Molecular Catalysis A: Chemical. 193:227-236
Five perovskite oxides with the composition La 1− x K x Mn y Fe 1− y O 3 (0≤ x , y ≤0.2) were synthesized by the co-precipitation method. Techniques such as chemical and XR fluorescence analysis, powder X-ray diffraction (XRD), BET surface ar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4fd0a53ce316ad0da5941b5d0626733b
https://doi.org/10.1016/s1381-1169(02)00472-7
https://doi.org/10.1016/s1381-1169(02)00472-7