Nanoporous ionic organic networks (PIONs) with a high ionic density 9 (three cation−anion pairs per unit) have been synthesized by a facile S N 2 nucleophilic 10 substitution reaction. Owing to the electrostatic and steric eﬀect, those ionic networks 11 with porous channels can stabilize and support gold (Au) nanoparticles (NPs) in 1−2 12 nm. The Au@PION hybrid materials used as an heterogeneous catalyst were highly 13 active, selective, and stable in the aerobic oxidation of saturated alcohols. 14 KEYWORDS: Gold nanoparticles, gold catalysis, porous polyelectrolyte, porous poly(ionic liquid)s, aerobic oxidation 15 D uring the past decade, the possibility of modulating the 16 physicochemical properties of ionic liquids (ILs) by an 17 appropriate combination of cations and anions allied to their 18 supramolecular organization enables the ILs-mediated prepara- 19 tion of metallic nanoparticles (NPs). 1−5 Meanwhile, gold (Au) 20 NPs with increased fractions of edges and corners have been

1 Nanoporous Ionic Organic Networks: Stabilizing and Supporting 2 Gold Nanoparticles for Catalysis

Synthesis of ionic-liquid-functionalized UiO-66 framework by post-synthetic ligand exchange for the ultra-deep desulfurization

The design and synthesis of effective and recyclable oxidative desulfurization catalysts is of great importance in view of environmental protection and human health. Herein, a family of polyoxomoly...

Efficient Catalytic Oxidative Desulfurization toward Thioether and Sulfur Mustard Stimulant by Polyoxomolybdate–Resorcin[4]arene-Based Metal–Organic Materials

In this work, we report a series of crystalline viologen-based porous ionic polymers (denoted VIP-X, X = Cl or Br), that have in situ formed dicationic viologens paired with halogen anions and intrinsic hydrogen-bonded water molecules, towards metal-free heterogeneous catalytic conversion of carbon dioxide (CO2) under mild conditions. The targeted VIP-X materials were facilely constructed via the Menshutkin reaction of 4,4′-bipyridine with 4,4′-bis(bromomethyl)biphenyl (BCBMP) or 4,4′-bis(chloromethyl)biphenyl (BBMBP) monomers. Their crystalline and porous structures, morphological features and chemical structures and compositions were fully characterized by various advanced techniques. The optimal catalyst VIP-Br afforded a high yield of 99% in the synthesis of cyclic carbonate by CO2 cycloaddition with epichlorohydrin under atmospheric pressure (1 bar) and a low temperature (40 °C), while other various epoxides could be also converted into cyclic carbonates under mild conditions. Moreover, the catalyst VIP-Br could be separated easily and reused with good stability. The remarkable catalytic performance could be attributed to the synergistic effect of the enriched Br− anions and available hydrogen bond donors –OH groups coming from H-bonded water molecules.

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Facile synthesis of crystalline viologen-based porous ionic polymers with hydrogen-bonded water for efficient catalytic CO2 fixation under ambient conditions

Different metal organic frameworks, MIL-101(Al) and MIL-101(Fe), were compared to use in fixing active components H3PMo6W6O40 (abbreviated as POM in this work) and the Fe3O4 was also introduced to ...

Effective and Reusable Oxidative Desulfurization of Dibenzothiophene via Magnetic Amino-MIL-101 Supported H3PMo6W6O40 Components: Comparison Influence on Various Types of MIL-101

Lingling Liu

Papers

Adsorption-enhanced oxidative desulfurization by a task-specific pyridinium-based porous ionic polymer