Mesoporous poly(ionic liquid) supported palladium(II) catalyst for oxidative coupling of benzene under atmospheric oxygen

Liu, Yangqing; Wang, Kai; Hou, Wei; Shan, Wanjian; Li, Jing; Zhou, Yu; Wang, Jun

doi:10.1016/j.apsusc.2017.08.019

Cited by 30 publications

(7 citation statements)

References 50 publications

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“…The authors employed H 5 PMo 10 V 2 O 40 as an additive of the same polymer‐supported Pd(II) single sites, aiming at milder reaction conditions of temperature and pressure [36] . For atmospheric O 2 pressures and mild temperatures (90 °C), the maximum TON of the heterogeneous Pd SAC was 62, with respect to the TON of 55 in the case of homogenous Pd(OAc) 2 under similar conditions.…”

Section: Supported Sac For Oxidative C−h/c−h Couplingsmentioning

confidence: 99%

Supported Single Atom Catalysts for C−H Activation: Selective C−H Oxidations, Dehydrogenations and Oxidative C−H/C−H Couplings

Martín

Cirujano

2021

ChemCatChem

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The activation of C−H bonds in hydrocarbons (saturated, unsaturated and aromatics) by single atom catalysts immobilized in a solid support is an active research front in catalysis. On the one hand, different examples of transition metal catalysts atomically dispersed on inorganic, organic and hybrid supports are constantly designed, synthesized and characterized using advanced microscopy and spectroscopic techniques. On the other hand, active, selective and stable single metal sites are recently developed as high performant heterogeneous catalysts for the C−H activation of organic molecules. This review covers recent examples of selective alkane and arene C−H oxidations, dehydrogenations of alkanes, as well as C−H/C−H oxidative couplings involving arenes, alkenes and alkynes, based on the use of supported single atom catalysts.

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Section: Supported Sac For Oxidative C−h/c−h Couplingsmentioning

confidence: 99%

Supported Single Atom Catalysts for C−H Activation: Selective C−H Oxidations, Dehydrogenations and Oxidative C−H/C−H Couplings

Martín

Cirujano

2021

ChemCatChem

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“…Poly (ionic liquids) (PILs), a novel chemical material, have received a lot of attention from scientists due to their special characteristics, such as negligible vapor pressure, fine physical and chemical stability, low volatility, non‐flammability, high thermal stability, high ionic conductivity and wide electrochemical potential window . Therefore, PILs have been widely used in the field of chemical adsorption, membrane separation, membrane modification, gel, surfactant, and organic synthesis reactions, such as polymerization reaction, epoxy reaction and oxidation reaction …”

Section: Introductionmentioning

confidence: 99%

“…found that the obtained Pd (II) catalyst reached the first heterogeneous catalyst for the aerobic oxidative coupling of benzene to biphenyl, which has an effective support of multi‐functional mesoporous (M)PIL with pyridine‐based IL moiety and carboxyl groups to endow high electrophilicity. Also, the Pd (II) catalyst can be facilely separated by filtration and reused . Shi et al .…”

Section: Introductionmentioning

confidence: 99%

Stable poly (ionic liquids) with unique cross‐linked mesoporous‐macroporous structure as efficient catalyst for alkylation of o‐xylene and styrene

Sheng

Gao

Zhou

et al. 2019

Applied Organom Chemis

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In this work, using divinylbenzene (D), 1-vinylimidazole (V) and 1-vinyl-3butylimidazolium bromide ([VBIM][Br]) as monomers, the binary-monomer poly (ionic liquids) (PILs) and ternary-monomer PILs were successfully synthesized, via hydrothermal polymerization and anion exchange, sequentially. Compared with each other, the ternary polymeric acidic IL catalyst has a clear spongy porous structure, while having a more stable macroporous structure, a larger specific surface area, more acidic groups and more active sites. Catalytic performance of catalyst was investigated through the alkylation of o-xylene and styrene. The effect of the amount of IL added and the length of the cation chain on the ternary polymerization of acidic IL was systematically investigated.Under optimal reaction conditions (molar ratio of monomers was D:V: [VBIM][Br] = 2:1:1, the most suitable cation chain length was C 4 ), the synthesized MPD-[C 4 V]-[VBIM][SO 3 CF 3 ] has a larger specific surface area (89.47 m 2 /g), large pore volume (0.29 cm 3 /g), and abundant mesopores and macropores, which help to improve the contact between the active site and reactants. Moreover, the catalyst could maintain a relatively high conversion of styrene (99.0%), 1,2-diphenylethane yield (98.7%) and high thermostability under reaction and be easily be divided from the solution, which is critical for heterogeneous solid catalysts.

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“…The results showed that a high conversion of styrene (100%) and 1,2‐diphenylethane (PXE) yield of 99.67% was obtained under optimal reaction conditions. Moreover, poly ionic liquids not only utilize their own characteristics to develop rapidly in chemical adsorption, membrane separation, gel, but also has been widely used in organic synthesis reactions such as esterification reaction, epoxy reaction and oxidation reaction . In addition, the combination of modified polyurethane with graphene, a carrier for nanoparticles and pharmaceutical applications in combination with biomass also promoted the development of poly ionic liquid.…”

Section: Introductionmentioning

confidence: 99%

The catalytic performance study of polymerized ionic liquid synthesized in different conditions on alkylation of o‐Xylene with styrene

Liu

Gao

Sheng

et al. 2019

Applied Organom Chemis

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In this work, a series of novel acidic polymerized ionic liquids were used as heterogeneous catalyst for alkylation of o-Xylene with styrene. And the effect of the amount of initiator and the type of acid used for ion exchange on catalyst structure and the catalytic performance of catalysts for alkylation were studied thoroughly. The experiment results show: when the percentage of the amount of initiator in the total material is 3%, the polymerized ionic liquid catalyst MPM-SO 3 H-[C 3 V][SO 3 CF 3 ] has the most uniform with a specific surface area of 97.30 m 2 /g and a pore volume of 0.35 cm 3 /g. Benefiting from the unique structure features, MPM-SO 3 H-[C 3 V][SO 3 CF 3 ] manifested an excellent catalytic performance for alkylation of o-Xylene with styrene, along with the conversion of styrene was 96.8% and the yield of 1-Phenyl-1-ortho-xylene ethane was 94.7%. Therefore, this work provides a novel reference to the synthesis of polymerized ionic liquids and clearly explains the advantage of novel acidic polymerized ionic liquids on alkylation.

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Mesoporous poly(ionic liquid) supported palladium(II) catalyst for oxidative coupling of benzene under atmospheric oxygen

Cited by 30 publications

References 50 publications

Supported Single Atom Catalysts for C−H Activation: Selective C−H Oxidations, Dehydrogenations and Oxidative C−H/C−H Couplings

Supported Single Atom Catalysts for C−H Activation: Selective C−H Oxidations, Dehydrogenations and Oxidative C−H/C−H Couplings

Stable poly (ionic liquids) with unique cross‐linked mesoporous‐macroporous structure as efficient catalyst for alkylation of o‐xylene and styrene

The catalytic performance study of polymerized ionic liquid synthesized in different conditions on alkylation of o‐Xylene with styrene

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