Tin and silicon phthalocyanines molecularly engineered as traceable stabilizers of asphaltenes

Violeta Y. Mena-Cervantes, Raúl Hernández-Altamirano, Eduardo Buenrostro-González, Hiram I. Beltrán, Luis S. Zamudio-Rivera

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Petroleum asphaltenes represent the most polar and heavy molecular fraction of crude oil; hence, it comprises a very complex and problematic mixture of molecules that tend to assemble in particles of micrometric size. These particles are difficult to be maintained as flocculations by the interaction with normal dispersants at low concentration values. Additionally, once these flocculations are formed, they can be destabilized, leading to deposition onto metallic and mineral surfaces. In this line, two phthalocyanines, tin (SnPc) and silicon (SiPc), were molecularly engineered, prepared, characterized, and assessed as stabilizers for petroleum asphaltenes. The stabilizing behavior of SnPc and SiPc was experimentally and theoretically determined through two contributions: (i) the inhibitive effect, related to the stabilization of already formed asphaltenes flocculations under the application of an electric field, and (ii) the dispersive effect, directly related to the ability of the molecules to prevent further growing of small asphaltenes flocculations (clustering). Results have shown that, because of stereochemical differences, SnPc is a better inhibitor and dispersant than SiPc. Also, these two surfactants have shown ultraviolet-visible (UV-vis) traceability above 100 parts per billion in crude oil media, an important characteristic to track transportation and general handling of petroleum and its derivatives, to secure the final products. © 2010 American Chemical Society.
Original languageAmerican English
Pages (from-to)224-231
Number of pages200
JournalEnergy and Fuels
DOIs
StatePublished - 20 Jan 2011
Externally publishedYes

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silicon phthalocyanine
Asphaltenes
Tin
Petroleum
Flocculation
Crude oil
Silicon
Molecules
Complex Mixtures
Surface-Active Agents
Minerals
Surface active agents
Stabilization
Electric fields
Derivatives

Cite this

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title = "Tin and silicon phthalocyanines molecularly engineered as traceable stabilizers of asphaltenes",
abstract = "Petroleum asphaltenes represent the most polar and heavy molecular fraction of crude oil; hence, it comprises a very complex and problematic mixture of molecules that tend to assemble in particles of micrometric size. These particles are difficult to be maintained as flocculations by the interaction with normal dispersants at low concentration values. Additionally, once these flocculations are formed, they can be destabilized, leading to deposition onto metallic and mineral surfaces. In this line, two phthalocyanines, tin (SnPc) and silicon (SiPc), were molecularly engineered, prepared, characterized, and assessed as stabilizers for petroleum asphaltenes. The stabilizing behavior of SnPc and SiPc was experimentally and theoretically determined through two contributions: (i) the inhibitive effect, related to the stabilization of already formed asphaltenes flocculations under the application of an electric field, and (ii) the dispersive effect, directly related to the ability of the molecules to prevent further growing of small asphaltenes flocculations (clustering). Results have shown that, because of stereochemical differences, SnPc is a better inhibitor and dispersant than SiPc. Also, these two surfactants have shown ultraviolet-visible (UV-vis) traceability above 100 parts per billion in crude oil media, an important characteristic to track transportation and general handling of petroleum and its derivatives, to secure the final products. {\circledC} 2010 American Chemical Society.",
author = "Mena-Cervantes, {Violeta Y.} and Ra{\'u}l Hern{\'a}ndez-Altamirano and Eduardo Buenrostro-Gonz{\'a}lez and Beltr{\'a}n, {Hiram I.} and Zamudio-Rivera, {Luis S.}",
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Tin and silicon phthalocyanines molecularly engineered as traceable stabilizers of asphaltenes. / Mena-Cervantes, Violeta Y.; Hernández-Altamirano, Raúl; Buenrostro-González, Eduardo; Beltrán, Hiram I.; Zamudio-Rivera, Luis S.

In: Energy and Fuels, 20.01.2011, p. 224-231.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Tin and silicon phthalocyanines molecularly engineered as traceable stabilizers of asphaltenes

AU - Mena-Cervantes, Violeta Y.

AU - Hernández-Altamirano, Raúl

AU - Buenrostro-González, Eduardo

AU - Beltrán, Hiram I.

AU - Zamudio-Rivera, Luis S.

PY - 2011/1/20

Y1 - 2011/1/20

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