Desulfurization Process Conciliating Heterogeneous Oxidation and Liquid Extraction

Organic Solvent or Centrifugation/Water?

Susana O. Ribeiro, Lucie S. Nogueira, Sandra Gago, Marta C. Corvo, Baltazar de Castro, Carlos M. Granadeiro, Salete S. Balula, Pedro L. Almeida

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The present work presents a strategic oxidative desulfurization system able to efficiently operate under sustainable conditions, i.e. using an eco-friendly oxidant and without the need of extractive organic solvents. The catalytic performance of Eu(PW11039)(2)@aptesSBA-15 was evaluated for the oxidative desulfurization of a multicomponent model diesel using a solvent-free or biphasic systems. The results reveal its remarkable desulfurization performance achieving complete desulfurization after just 2 h of reaction. Moreover, the composite has shown a high recycling ability without loss of catalytic activity for ten consecutive ODS cycles. Interestingly, under solvent-free conditions it was possible to maintain the desulfurization efficiency of the biphasic system while being able to avoid the use of harmful organic solvents. In this case, a successful extraction of oxidized sulfur compounds was found conciliating centrifugation and water as extraction solvent. Therefore, this work reports an important step towards the development of novel eco-sustainable desulfurization systems with high industrial interest.
Original languageEnglish
Pages (from-to)359-367
Number of pages9
JournalApplied Catalysis A-General
Volume542
DOIs
Publication statusPublished - 25 Jul 2017

Fingerprint

Centrifugation
Desulfurization
Organic solvents
Oxidation
Water
Liquids
Sulfur Compounds
Sulfur compounds
Solvent extraction
Oxidants
Recycling
Catalyst activity
Composite materials

Keywords

  • Sulfur-free diesel
  • Sustainable desulfurization processes
  • Heterogeneous catalysis
  • Polyoxometalate
  • Water extraction solvent

Cite this

Ribeiro, Susana O. ; Nogueira, Lucie S. ; Gago, Sandra ; Corvo, Marta C. ; de Castro, Baltazar ; Granadeiro, Carlos M. ; Balula, Salete S. ; Almeida, Pedro L. / Desulfurization Process Conciliating Heterogeneous Oxidation and Liquid Extraction : Organic Solvent or Centrifugation/Water?. In: Applied Catalysis A-General. 2017 ; Vol. 542. pp. 359-367.
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Desulfurization Process Conciliating Heterogeneous Oxidation and Liquid Extraction : Organic Solvent or Centrifugation/Water? / Ribeiro, Susana O.; Nogueira, Lucie S.; Gago, Sandra; Corvo, Marta C.; de Castro, Baltazar; Granadeiro, Carlos M.; Balula, Salete S.; Almeida, Pedro L.

In: Applied Catalysis A-General, Vol. 542, 25.07.2017, p. 359-367.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Desulfurization Process Conciliating Heterogeneous Oxidation and Liquid Extraction

T2 - Organic Solvent or Centrifugation/Water?

AU - Ribeiro, Susana O.

AU - Nogueira, Lucie S.

AU - Gago, Sandra

AU - Corvo, Marta C.

AU - de Castro, Baltazar

AU - Granadeiro, Carlos M.

AU - Balula, Salete S.

AU - Almeida, Pedro L.

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PY - 2017/7/25

Y1 - 2017/7/25

N2 - The present work presents a strategic oxidative desulfurization system able to efficiently operate under sustainable conditions, i.e. using an eco-friendly oxidant and without the need of extractive organic solvents. The catalytic performance of Eu(PW11039)(2)@aptesSBA-15 was evaluated for the oxidative desulfurization of a multicomponent model diesel using a solvent-free or biphasic systems. The results reveal its remarkable desulfurization performance achieving complete desulfurization after just 2 h of reaction. Moreover, the composite has shown a high recycling ability without loss of catalytic activity for ten consecutive ODS cycles. Interestingly, under solvent-free conditions it was possible to maintain the desulfurization efficiency of the biphasic system while being able to avoid the use of harmful organic solvents. In this case, a successful extraction of oxidized sulfur compounds was found conciliating centrifugation and water as extraction solvent. Therefore, this work reports an important step towards the development of novel eco-sustainable desulfurization systems with high industrial interest.

AB - The present work presents a strategic oxidative desulfurization system able to efficiently operate under sustainable conditions, i.e. using an eco-friendly oxidant and without the need of extractive organic solvents. The catalytic performance of Eu(PW11039)(2)@aptesSBA-15 was evaluated for the oxidative desulfurization of a multicomponent model diesel using a solvent-free or biphasic systems. The results reveal its remarkable desulfurization performance achieving complete desulfurization after just 2 h of reaction. Moreover, the composite has shown a high recycling ability without loss of catalytic activity for ten consecutive ODS cycles. Interestingly, under solvent-free conditions it was possible to maintain the desulfurization efficiency of the biphasic system while being able to avoid the use of harmful organic solvents. In this case, a successful extraction of oxidized sulfur compounds was found conciliating centrifugation and water as extraction solvent. Therefore, this work reports an important step towards the development of novel eco-sustainable desulfurization systems with high industrial interest.

KW - Sulfur-free diesel

KW - Sustainable desulfurization processes

KW - Heterogeneous catalysis

KW - Polyoxometalate

KW - Water extraction solvent

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DO - 10.1016/j.apcata.2017.05.032

M3 - Article

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SP - 359

EP - 367

JO - Applied Catalysis A-General

JF - Applied Catalysis A-General

SN - 0926-860X

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