Mono Mn(II)-substituted phosphotungstate@modified graphene oxide as a high-performance nanocatalyst for oxidative demercaptanization of gasoline

Rezvani, Mohammad Ali; Aghbolagh, Zahra Shokri; Hosseini‐Monfared, Hassan; Khandan, Sahar

doi:10.1016/j.jiec.2017.03.021

Cited by 52 publications

(45 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The removal efficiencies of MTCs from the model fuels at 35 °C rapidly were increased from 35% in the 10 min of reaction up to 95% as the stirring time increased to 60 min. Thus, reaction temperature and time were set to 30 °C and 60 min, respectively, as optimum conditions of ODS systems …”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Facile synthesis of inorganic–organic Fe₂W₁₈Fe₄@NiO@CTS hybrid nanocatalyst induced efficient performance in oxidative desulfurization of real fuel

Rezvani

Maleki

2019

Applied Organom Chemis

Self Cite

View full text Add to dashboard Cite

In this work, a new nanocatalyst, Fe2W18Fe4@NiO@CTS, was synthesized by the reaction of sandwich‐type polyoxometalate (Fe2W18Fe4), nickel oxide (NiO), and chitosan (CTS) via sol–gel method. The assembled nanocatalyst was systematically characterized by FT‐IR, UV–vis, XRD, SEM, and EDX analysis. The catalytic activity of Fe2W18Fe4@NiO@CTS was tested on oxidative desulfurization (ODS) of real gasoline and model fuels. The experimental results revealed that the levels of sulfur content and mercaptan compounds of gasoline were lowered with 97% efficiency. Also, the Fe2W18Fe4@NiO@CTS nanocatalyst demonstrated an outstanding catalytic performance for the oxidation of dibenzothiophene (DBT) in the model fuel. The major factors that influence the desulfurization efficiency and the kinetic study of the ODS reactions were fully detailed and discussed. The probable ODS pathway was proposed via the electrophilic mechanism on the basis of the electrophilic characteristic of the metal‐oxo‐peroxo intermediates. The prepared nanocatalyst could be reused for 5 successive runs without any appreciable loss in its catalytic activity. As a result, the current study suggested the potential application of the Fe2W18Fe4@NiO@CTS hybrid nanocatalyst as an ideal candidate for removal of sulfur compounds from fuel.

show abstract

Section: Resultsmentioning

confidence: 99%

“…As an interesting fact, ODS capable to easily remove of refractory sulfur compounds (e.g. DBT and their alkyl‐substituted derivatives) . High electron density on the sulfur atom renders aromatic sulfides more susceptible to the electrophilic attack of the oxidizing agent and their oxidation to sulfones .…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis of inorganic–organic Fe₂W₁₈Fe₄@NiO@CTS hybrid nanocatalyst induced efficient performance in oxidative desulfurization of real fuel

Rezvani

Maleki

2019

Applied Organom Chemis

Self Cite

View full text Add to dashboard Cite

show abstract

“…In this system the H 2 O molecules are produced as a by‐product. The oxidation of sulfur atoms in gasoline is occurring via the electrophilic attack mechanism . Due to the electrophilic attack of active oxygen in PMo 11 Cu@MgCu 2 O 4 @CS on the electron pairs of sulfur atoms can be formed polar sulfoxide (step 3) corresponding sulfone molecules (step 4,5).…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of New Inorganic‐Organic Hybrid Nanocomposite PMo₁₁Cu@MgCu₂O₄@CS as an Efficient Heterogeneous Nanocatalyst for ODS of Real Fuel

et al. 2019

Self Cite

View full text Add to dashboard Cite

In this work, a new nanocomposite (PMo11Cu@MgCu2O4@CS) was synthesized by reaction of copperII‐monosubstituted phosphomolybdate (PMo11Cu), magnesiocopperite (MgCu2O4) and Chitosan (CS) via the sol‐gel method. The assembled nanocomposite was characterized by FTIR, XRD, SEM. The catalytic activity of the nanocomposite was tested on oxidative desulfurization (ODS) of real gasoline in the presence of CH3COOH/H2O2 in the volume ratio of 1/2 as an oxidant. Additionally, the results were compared with the oxidation reaction of prepared model sulfur compounds at the same conditions. The ODS results showed that immobilized of PMo11Cu on the CS and MgCu2O4 nanoceramic increased the efficiency and activity of the PMo11Cu in the removal of organic sulfur compounds (OSCs). The PMo11Cu@CS @MgCu2O4 could be reused for at least five times without notable reduction in efficiency of ODS system. This investigation presents a promising approach to the efficient removal of OSCs from gasoline using PMo11Cu@MgCu2O4@CS catalyst under mild reaction conditions.

show abstract

“…To confirm the incorporation of the materials, FT-IR spectra were recorded on the pure PMA, IMID, CS, modified IMID@PMA, and IMID@PMA@CS hybrid nanocomposite. As shown in Figure 1a, for Keggin-type structure of POM, there are four characteristic absorption bands in the fingerprint area of the FT-IR spectra that consists of PO 4 tetrahedron which is surrounded by four Mo 3 O 9 groups formed by the edge sharing octahedron [24,25]. This structure gives rise to different types of oxygen atoms, being responsible for the fingerprint FT-IR bands of the pure PMA between 750 and 1100 cm 21 (Figure 1a).…”

Section: Ft-ir Analysismentioning

confidence: 99%

“…Recently, the surface modification of POM supported catalysts with hydrophilic and hydrophobic functional groups has proved to be an effective solution to form amphiphilic solid POM catalysts, which can be utilized in heterogeneous catalysis, allowing facile separation and recycling after operation [14,15]. In continuation of our group researches on the synthesis and application of POM in organic reaction, we report the applicability of IMID@PMA@CS for efficient desulfurization of gasoline to preparation of clean fuels [15][16][17][18][19][20][21][22][23][24][25][26]. In this study, the new class of phase transfer-type nanocatalyst (IMID@PMA@CS) was synthesized and its catalytic activity in sulfur oxidation treatments evaluated.…”

Section: Introductionmentioning

confidence: 99%

Oxidative desulfurization of gasoline catalyzed by IMID@PMA@CS nanocomposite as a high‐performance amphiphilic nanocatalyst

Rezvani

Shaterian

Aghbolagh

et al. 2018

Env Prog and Sustain Energy

Self Cite

View full text Add to dashboard Cite

A new organic–inorganic hybrid phase transfer‐type nanocatalyst (IMID@PMA@CS) was successfully prepared by modification of H3PMo12O40 (PMA) with imidazolium bromide C3N2H5Br (IMIDBr) and immobilized on chitosan polymer via sol–gel method under oil‐bath condition at room temperature. The incorporation of the materials was confirmed by Fourier transform infrared spectroscopy (FTIR), ultraviolet–visible (UV–vis), X‐ray diffraction (XRD), and scanning electron microscopy (SEM) characterization methods. Catalytic activity of synthesized nanocomposite was tested on the oxidative desulfurization (ODS) of model sulfur compounds and real gasoline in the presence of H2O2/CH3COOH as an oxidant and acetonitrile as an extraction solvent in different conditions. Additionally, kinetic studies were carried out and activation energy for oxidation of sulfur compounds was determined. The excellent reusability of the heterogeneous IMID@PMA@CS composite was achieved in five cycles. It is believed that the present IMID@PMA@CS/CH3COOH/H2O2 system can be a convenient strategy for lowering the sulfur content of gasoline fuel under moderate reaction conditions. © 2018 American Institute of Chemical Engineers Environ Prog, 37: 1901–1907, 2018

show abstract

Mono Mn(II)-substituted phosphotungstate@modified graphene oxide as a high-performance nanocatalyst for oxidative demercaptanization of gasoline

Cited by 52 publications

References 32 publications

Facile synthesis of inorganic–organic Fe₂W₁₈Fe₄@NiO@CTS hybrid nanocatalyst induced efficient performance in oxidative desulfurization of real fuel

Facile synthesis of inorganic–organic Fe₂W₁₈Fe₄@NiO@CTS hybrid nanocatalyst induced efficient performance in oxidative desulfurization of real fuel

Synthesis and Characterization of New Inorganic‐Organic Hybrid Nanocomposite PMo₁₁Cu@MgCu₂O₄@CS as an Efficient Heterogeneous Nanocatalyst for ODS of Real Fuel

Oxidative desulfurization of gasoline catalyzed by IMID@PMA@CS nanocomposite as a high‐performance amphiphilic nanocatalyst

Contact Info

Product

Resources

About

Mono Mn(II)-substituted phosphotungstate@modified graphene oxide as a high-performance nanocatalyst for oxidative demercaptanization of gasoline

Cited by 52 publications

References 32 publications

Facile synthesis of inorganic–organic Fe2W18Fe4@NiO@CTS hybrid nanocatalyst induced efficient performance in oxidative desulfurization of real fuel

Facile synthesis of inorganic–organic Fe2W18Fe4@NiO@CTS hybrid nanocatalyst induced efficient performance in oxidative desulfurization of real fuel

Synthesis and Characterization of New Inorganic‐Organic Hybrid Nanocomposite PMo11Cu@MgCu2O4@CS as an Efficient Heterogeneous Nanocatalyst for ODS of Real Fuel

Oxidative desulfurization of gasoline catalyzed by IMID@PMA@CS nanocomposite as a high‐performance amphiphilic nanocatalyst

Contact Info

Product

Resources

About

Facile synthesis of inorganic–organic Fe₂W₁₈Fe₄@NiO@CTS hybrid nanocatalyst induced efficient performance in oxidative desulfurization of real fuel

Facile synthesis of inorganic–organic Fe₂W₁₈Fe₄@NiO@CTS hybrid nanocatalyst induced efficient performance in oxidative desulfurization of real fuel

Synthesis and Characterization of New Inorganic‐Organic Hybrid Nanocomposite PMo₁₁Cu@MgCu₂O₄@CS as an Efficient Heterogeneous Nanocatalyst for ODS of Real Fuel