Výsledky vyhledávání - "Socrates Acevedo"

Akademický článek

Analysis of the Photo Conversion of Asphaltenes Using Laser Desorption Ionization Mass Spectrometry: Fragmentation, Ring Fusion, and Fullerene Formation

Autor: Henry Labrador, Socrates Acevedo, Luis Puerta, Brice Bouyssiere, Hervé Carrier

Publikováno v: Journal of Petroleum Science and Technology, Vol 8, Iss 2, Pp 57-69 (2018)

The conversion or photo conversion of asphaltenes to polycyclic aromatic hydrocarbons (PAH’s) promoted by a laser source is analyzed using both experimental and theoretical methods. We propose that during measurements performed at an intermediate l

Externí odkaz: https://doaj.org/article/f4d877b3bc1749eab9f41ef4e2fd6d75

Zobrazit plný text záznamu

Asphaltenes: Aggregates in Terms of A1 and A2 or Island and Archipielago Structures

Autor: Socrates Acevedo, Jimmy Castillo

Publikováno v: ACS Omega. 8:4453-4471

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4a518844bfbc97a5b699bc51b8b3fcb4
https://doi.org/10.1021/acsomega.2c06362

Zobrazit plný text záznamu

Simplification of Heavy Matrices by Liquid–Solid Extraction: Part II—How to Separate the LMW, MMW, and HMW Compounds in Asphaltene Fractions for V, Ni, and S Compounds

Autor: German Gascon, Juan Negrín, Victor G. Montoto, Socrates Acevedo, Charles-Philippe Lienemann, Brice Bouyssiere

Publikováno v: Energy and Fuels
Energy and Fuels, American Chemical Society, 2019, 33 (9), pp.8110-8117. ⟨10.1021/acs.energyfuels.9b01511⟩

International audience; A method of sequential liq.-solid extn. (leaching) has been developed to ext. the V, Ni, and S compds. present in asphaltenes (n-C7) according to their mol. wt. distribution. For the high-mol.-wt. (HMW) compds., 2

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::25bdbbeaa36b816981c6a0511abb52f6
https://hal-univ-pau.archives-ouvertes.fr/hal-02282542/file/EF-PArtII.pdf

Zobrazit plný text záznamu

Akademický článek

Catalytic Conversion of n-C7 Asphaltenes and Resins II into Hydrogen Using CeO2-Based Nanocatalysts

Autor: Oscar E. Medina, Jaime Gallego, Sócrates Acevedo, Masoud Riazi, Raúl Ocampo-Pérez, Farid B. Cortés, Camilo A. Franco

Publikováno v: Nanomaterials, Vol 11, Iss 5, p 1301 (2021)

This study focuses on evaluating the volumetric hydrogen content in the gaseous mixture released from the steam catalytic gasification of n-C7 asphaltenes and resins II at low temperatures (2, CeO2 functionalized with Ni-Pd, Fe-Pd, and Co-Pd. The cat

Externí odkaz: https://doaj.org/article/9bedd14dd1654be2ac527e4ee9f71c68

Zobrazit plný text záznamu

Akademický článek

Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.

Transmission of polar effects. Part 16. Ionisation of 8-substituted 1-naphthoic acids and the alkaline hydrolysis of their methyl esters

Autor: Socrates Acevedo, Keith Bowden

Publikováno v: Journal of the Chemical Society, Perkin Transactions 2. :2049

Kirkwood–Westheimer calculations were carried out for the ionisation of three 8-substituted 1-naphthoic acids in 80%(w/w) 2-methoxyethanol–water at 25 °C. The reversed substituent polar effects are accounted for qualitatively and quantitatively

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::49df30adc9be5ba02519fa57fca56dfa
https://doi.org/10.1039/p29860002049

Zobrazit plný text záznamu

Transmission of polar effects. Part 17. Ionisation and esterification with diazodiphenylmethane of 5-substituted triptycene-7-carboxylic acids and the alkaline hydrolysis of their methyl esters

Autor: Socrates Acevedo, Keith Bowden

Publikováno v: Journal of the Chemical Society, Perkin Transactions 2. :2051

The pKa values of a series of 5-substituted triptycene-7-carboxylic acids have been measured in 80%(w/w) 2-methoxyethanol-water at 25 °C. The rate coefficients for their esterification with diazodiphenylmethane in 2-methoxyethanol have been measured

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::96c8006d6b6bfe0223ddec2329828c9b
https://doi.org/10.1039/p29860002051

Zobrazit plný text záznamu

Akademický článek

Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.

Akademický článek

Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.

Akademický článek

Adsorption-desorption of n-c 7 asphaltenes over micro- and nanoparticles of silica and its impact on wettability alteration

Autor: Farid B. Cortés, Tatiana Montoya, Sócrates Acevedo, Nashaat N. Nassar, Camilo Andrés Franco

Publikováno v: CT&F Ciencia, Tecnología & Futuro, Vol 6, Iss 4, Pp 89-106

Abstract In this work, a study of the adsorption/desorption of n-C7 asphaltenes at low and high concentrations (100 - 30000 mg/L) was performed for which the effects of adsorbent particle size (nano and microsilica), pressure, solvent, and temperatur

Externí odkaz: https://doaj.org/article/22f37ef2175140a087a75604339ca203

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání