Keggin-type lacunary and transition metal substituted polyoxometalates as heterogeneous catalysts: A recent progress

Patel, Anjali; Narkhede, Nilesh; Singh, Sukriti; Pathan, Soyeb

doi:10.1080/01614940.2016.1171606

Cited by 103 publications

(67 citation statements)

References 122 publications

(144 reference statements)

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“…To confront this limitation, many approaches were proposed to architect the POM‐based heterogeneous catalysts. A feasible strategy is loading metal‐oxo anions on the surface of the appropriate supports . The chitosan (CTS), a linear polymer of 2‐amino‐2‐deoxy‐β‐D‐glucan, is widely used as a support material due to its biocompatibility, high availability, the adsorbent of the organic pollutants, and mucoadhesive nature .…”

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

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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.

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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

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“…Based on this principle, a family of transition-metal-functionalized lacunary Keggin anions has been established with applications ranging from catalysis to electronics and magnetism, and metal ions ranging from main group to transition metals and f-elements. [35][36][37][38][39]…”

Section: Role Of Cations In Pom Assemblymentioning

confidence: 99%

Beyond Charge Balance: Counter‐Cations in Polyoxometalate Chemistry

et al. 2019

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Polyoxometalates (POMs) are molecular metal‐oxide anions applied in energy conversion and storage, manipulation of biomolecules, catalysis, as well as materials design and assembly. Although often overlooked, the interplay of intrinsically anionic POMs with organic and inorganic cations is crucial to control POM self‐assembly, stabilization, solubility, and function. Beyond simple alkali metals and ammonium, chemically diverse cations including dendrimers, polyvalent metals, metal complexes, amphiphiles, and alkaloids allow tailoring properties for known applications, and those yet to be discovered. This review provides an overview of fundamental POM–cation interactions in solution, the resulting solid‐state compounds, and behavior and properties that emerge from these POM–cation interactions. We will explore how application‐inspired research has exploited cation‐controlled design to discover new POM materials, which in turn has led to the quest for fundamental understanding of POM–cation interactions.

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“…year. [2] Although uranium can be found in a broad variety of oxidation states, uranyl ion (UO 2 + 2 ) is the most common form in aqueous solution. In this regard, uranyl complexes offer a widespread range of coordination geometries.…”

Section: Introductionmentioning

confidence: 99%

Performance of group additivity methods for predicting the stability of uranyl complexes

Petrus

2020

J Comput Chem

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Herein, we investigated the viability of two group additivity methods for predicting Gibbs energies of a set of uranyl complexes. In first place, we proved that both density functional theory (DFT)‐based methods and Serezhkin's stereoatomic model provide equivalent answers in terms of stability. Moreover, we proposed a novel methodology based on Mayer's population analysis for estimating Serezhkin's empirical parameters theoretically. On the other hand, we showed that Cheong and Persson linear algebra methodology can be successfully applied to uranyl complexes, and analyzed its performance in connection with the chemical nature of the compounds employed in the model.

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Keggin-type lacunary and transition metal substituted polyoxometalates as heterogeneous catalysts: A recent progress

Cited by 103 publications

References 122 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

Beyond Charge Balance: Counter‐Cations in Polyoxometalate Chemistry

Performance of group additivity methods for predicting the stability of uranyl complexes

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Keggin-type lacunary and transition metal substituted polyoxometalates as heterogeneous catalysts: A recent progress

Cited by 103 publications

References 122 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

Beyond Charge Balance: Counter‐Cations in Polyoxometalate Chemistry

Performance of group additivity methods for predicting the stability of uranyl complexes

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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