Highly active and stable supported Pd catalysts on ionic liquid-functionalized SBA-15 for Suzuki–Miyaura cross-coupling and transfer hydrogenation reactions

Kusumawati, Etty N.; Sasaki, Takehiko

doi:10.1016/j.gee.2019.02.003

Cited by 28 publications

(9 citation statements)

References 56 publications

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“…Recently, we reported highly active and reusable Pd catalysts on SBA‐15 in the presence of immobilized IL . The PdNPs(2.4 nm)_me‐Im@SBA‐15 catalyst was active for Suzuki‐Miyaura coupling reaction between aryl halides (Ar−I and Ar−Br) and phenylboronic acid at room temperature without the need of additional ligand or stabilizer.…”

Section: Size‐controlled Syntheses Of Metal Nanoparticles On Sba‐15mentioning

confidence: 99%

“…[83] Recently, we reported highly active and reusable Pd catalysts on SBA-15 in the presence of immobilized IL. [88] The PdNPs(2.4 nm)_me-Im@SBA-15 catalyst was active for Suzuki-Miyaura coupling reaction between aryl halides (ArÀ I and ArÀ Br) and phenylboronic acid at room temperature without the need of additional ligand or stabilizer. On the other hand, PdNPs generated in situ from PdCl 4 _me-Im@SBA-15 was active and could retain its size (4.2 nm) even after being used for transfer hydrogenation reaction of nitrobenzene four times at high reaction temperature.…”

Section: P E R S O N a L A C C O U N T T H E C H E M I C A L R E C O R Dmentioning

confidence: 99%

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Metal Nanoparticles Syntheses on Ionic Liquids Functionalized Mesoporous Silica SBA‐15

Kusumawati

Sasaki

2019

The Chemical Record

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Supported metal nanoparticles hold great promise in heterogeneous catalysis as active and reusable catalysts for various organic transformations. Preparation methods of metal nanoparticles with excellent control over size, shape, and morphology on supports has significantly advanced to improve the performances of the resulting catalysts. Here, we aim to discuss the development of supported metal nanoparticles on mesoporous silica SBA‐15 in the presence of immobilized ionic liquids mostly based on examples from the previously reported results. This review highlights the preparation methods for size‐controlled syntheses and the immobilization of metal nanoparticles on solid supports, especially SBA‐15 by various techniques.

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Section: Size‐controlled Syntheses Of Metal Nanoparticles On Sba‐15mentioning

confidence: 99%

Section: P E R S O N a L A C C O U N T T H E C H E M I C A L R E C O R Dmentioning

confidence: 99%

Metal Nanoparticles Syntheses on Ionic Liquids Functionalized Mesoporous Silica SBA‐15

Kusumawati

Sasaki

2019

The Chemical Record

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“…Ionic liquids (ILs) are molten salts known to comprise cations and anions and constitute a fascinating class of solvents that has attracted the scientific community for decades due to the singularity of their physicochemical properties. − For their wide applications in green chemistry ranging from catalysis, − reaction, − separation, − and electrochemistry, the interface plays an essential and ubiquitous role, which has been the focus of IL research in the past 10 years. The competition, coexistence, and cooperation of interactions between ions and ion–substrate in interfacial ILs have been a breeding ground for novel properties and applications of ILs. ,, Controllable manipulation of various interactions via, for example, exposure to temperature and electric fields could lead to a new device paradigm for future chemical engineering. − …”

Section: Introductionmentioning

confidence: 99%

Probing Charge Injection-Induced Structural Transition in Ionic Liquids Confined at the MoS₂ Surface

Chen

Wang

et al. 2021

Ind. Eng. Chem. Res.

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The ability to tune structures and properties of interfacial ionic liquids (ILs) using electric fields lies at the heart of modern energy storage technologies, particularly for supercapacitors with ILs as electrolytes. Direct observation of the underlying structural change caused by charge injection is vitally important, but the data are extremely scarce. Here, we propose a general protocol to explore the dynamic structural response of interfacial ILs subjected to charge injection. The experimental results have revealed asymmetric structural evolution of interfacial ILs with a common feature of enhanced mobility during charge injection. Consequently, the surface ILs diffuse and agglomerate into various patterns, which depend critically on both the charge injection mode and initial structural feature. Slow and mild charge injection is advantageous in maintaining structural stability as well as regulating dielectric constants of interfacial ILs. Finally, we unveil the underlying energy conversion from electric energy to thermal energy that governs the structural evolution trend. Our current findings manifest a universal strategy for structural regulation of interfacial ILs via electric fields and open up opportunities for greatly accelerating charging efficiency of supercapacitors for energy storage and harvesting.

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“…Palladium (Pd)-containing catalysts have attracted extensive attention because of their excellent activity in various processes such as photocatalysis, 1−3 hydrogenation, 4−7 coupling reactions, 8,9 and CO oxidation. 10−14 In retrospect, they are well known for their excellent activity, stability, and reusability in multifarious catalysis.…”

Section: ■ Introductionmentioning

confidence: 99%

Facile Fabrication of Small-Sized Palladium Nanoparticles in Nanoconfined Spaces for Low-Temperature CO Oxidation

Shi

Xue

et al. 2020

Ind. Eng. Chem. Res.

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Palladium (Pd)-containing catalysts have gained extensive attention because of their outstanding activity in various heterogeneous catalytic reactions. The activity of these catalysts highly correlates with the size of the Pd particles. Herein, nanosized Pd particles were fabricated by utilizing the as-made SBA-15 (AS) possessing nanoconfined spaces between the template P123 and silica walls. By using the inherent nanoconfined spaces in AS, Pd nanoparticles with a smaller size can be generated conveniently (yielding Pd-AS); in contrast, Pd is apt to aggregate and form larger-sized particles in the conventionally calcined SBA-15 (CS) without nanoconfined spaces (yielding Pd-CS). The smaller size of Pd nanoparticles in Pd-AS endows the catalysts with better catalytic activity in CO oxidation compared to their Pd-CS counterparts. On the typical sample 5Pd-AS with 5 wt % of Pd, the turnover frequency at 140 °C is 1.55 min −1 , which is superior to its analogue 5Pd-CS (0.22 min −1 ).

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Highly active and stable supported Pd catalysts on ionic liquid-functionalized SBA-15 for Suzuki–Miyaura cross-coupling and transfer hydrogenation reactions

Cited by 28 publications

References 56 publications

Metal Nanoparticles Syntheses on Ionic Liquids Functionalized Mesoporous Silica SBA‐15

Metal Nanoparticles Syntheses on Ionic Liquids Functionalized Mesoporous Silica SBA‐15

Probing Charge Injection-Induced Structural Transition in Ionic Liquids Confined at the MoS₂ Surface

Facile Fabrication of Small-Sized Palladium Nanoparticles in Nanoconfined Spaces for Low-Temperature CO Oxidation

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Highly active and stable supported Pd catalysts on ionic liquid-functionalized SBA-15 for Suzuki–Miyaura cross-coupling and transfer hydrogenation reactions

Cited by 28 publications

References 56 publications

Metal Nanoparticles Syntheses on Ionic Liquids Functionalized Mesoporous Silica SBA‐15

Metal Nanoparticles Syntheses on Ionic Liquids Functionalized Mesoporous Silica SBA‐15

Probing Charge Injection-Induced Structural Transition in Ionic Liquids Confined at the MoS2 Surface

Facile Fabrication of Small-Sized Palladium Nanoparticles in Nanoconfined Spaces for Low-Temperature CO Oxidation

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Probing Charge Injection-Induced Structural Transition in Ionic Liquids Confined at the MoS₂ Surface