High Catalytic Activity of Palladium(II)‐Exchanged Mesoporous Sodalite and NaA Zeolite for Bulky Aryl Coupling Reactions: Reusability under Aerobic Conditions

Choi, Minkee; Lee, Donghwan; Na, Kyungsu; Yu, Byung‐Woo; Ryoo, Ryong

doi:10.1002/ange.200806334

Cited by 34 publications

(8 citation statements)

References 27 publications

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“…[18][19][20] Different supports have been reported for immobilization of palladium catalysts recently, including sepiolites, 21,22 hydrotalcite, 23 silica, 24 fluorous silica gel, 25,26 zeolite, [27][28][29] carbon, 30 and so on. 31 A few palladium complexes supported on functionalized polymer have been reported in some reactions successfully.…”

Section: Introductionmentioning

confidence: 99%

Diethanol amine‐functionalized polymer‐supported palladium (0) complex as catalyst for Suzuki cross‐coupling reaction in water

Wang

Cai

2011

J of Applied Polymer Sci

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Diethanol amine-functionalized polymersupported palladium (0) complex as catalyst for Suzuki cross-coupling reaction in water was synthesized and characterized. The catalyst exhibits excellent catalytic activity and stability in the Suzuki cross-coupling reaction. Various aryl bromides were coupled with aryl boronic acids in water, under air, and in the presence of 0.5 mol % of the catalyst to afford corresponding cross-coupled products in high yields at 100 C. Furthermore, the heterogeneous catalyst can be readily recovered by simple filtration and reused for several times only with a slight decrease in its activity.

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Section: Introductionmentioning

confidence: 99%

Diethanol amine‐functionalized polymer‐supported palladium (0) complex as catalyst for Suzuki cross‐coupling reaction in water

Wang

Cai

2011

J of Applied Polymer Sci

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“…Successful reports include the synthesis of mesoporous LTA [ 119 , 124 ], SOD [ 126 ], and BEA [ 127 ] zeolite architectures and the synthesis of mesoporous aluminophosphates constructed with crystalline microporous AFI and AEL topologies [ 128 ]. Recent reports claimed the synthesis of X zeolite (FAU topology) with high Al content (Si/Al < 1.5), exhibiting a pore system in a micro-meso-macro hierarchical interconnection [ 129 ].…”

Section: Use Of Organosilane Molecules As Mesopore-generating Agentsmentioning

confidence: 98%

Mesostructured Zeolites

Ryoo¹,

Cho²,

Mota³

2016

Green Chemistry and Sustainable Technology

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Mesoporous materials constructed with microporous zeolitic frameworks (i.e., mesoporous zeolites) are of great interest owing to the very short diffusion path lengths across thin zeolite layers and the presence of large external surfaces containing strong Brønsted acid sites. These characteristics of mesoporous zeolites are highly advantageous for a wide range of applications, particularly in heterogeneous catalysis. The mesoporous materials show unprecedentedly high catalytic performances (e.g., high catalytic conversion and catalytic longevity) as zeolites in various petrochemical reactions and fi ne-chemical organic reactions and especially in reactions involving bulky molecules. In this chapter, we describe the various methods currently available for the synthesis of mesoporous zeolites.

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“…To solve such problem, a novel ligand‐protected exchange method was developed. With the protection of ammonia, cationic complexes Pt(NH 3 ) 4 2+ , Pd(NH 3 ) 4 2+ , and Ir[(NH 3 ) 5 Cl] 2+ were stabilized in solutions, ensuring that these metal species could encapsulated into zeolites during the ion‐exchange process . This approach led to several ultrasmall Pt clusters being successfully encaged within zeolites, including MFI , LTL , BEA and FAU .…”

Section: Metal Clusters Confined In Zeolitesmentioning

confidence: 99%

“…This approach led to several ultrasmall Pt clusters being successfully encaged within zeolites, including MFI , LTL , BEA and FAU . [20e,21] Notably, when [Pt(NH 3 ) 4 ](NO 3 ) 2 solution was used as the exchange precursor, atomically dispersed Pt was also successfully embedded in KLTL zeolite. [21a] Utilizing high‐resolution scanning transmission electron microscopy (STEM), the authors confirmed that most of the isolated Pt(NH 3 ) 4 2+ cations were located at the edge of the 12 rings in zeolites and that only a few Pt(NH 3 ) 4 2+ cations were situated at the small rings between the 12 rings ( Figure A–D).…”

Section: Metal Clusters Confined In Zeolitesmentioning

confidence: 99%

Ultrasmall Metal Nanoparticles Confined within Crystalline Nanoporous Materials: A Fascinating Class of Nanocatalysts

2018

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Crystalline nanoporous materials with uniform porous structures, such as zeolites and metal–organic frameworks (MOFs), have proven to be ideal supports to encapsulate ultrasmall metal nanoparticles (MNPs) inside their void nanospaces to generate high‐efficiency nanocatalysts. The nanopore‐encaged metal catalysts exhibit superior catalytic performance as well as high stability and catalytic shape selectivity endowed by the nanoporous matrix. In addition, the synergistic effect of confined MNPs and nanoporous frameworks with active sites can further promote the catalytic activities of the composite catalysts. Herein, recent progress in nanopore‐encaged metal nanocatalysts is reviewed, with a special focus on advances in synthetic strategies for ultrasmall MNPs (<5 nm), clusters, and even single atoms confined within zeolites and MOFs for various heterogeneous catalytic reactions. In addition, some advanced characterization methods to elucidate the atomic‐scale structures of the nanocatalysts are presented, and the current limitations of and future opportunities for these fantastic nanocatalysts are also highlighted and discussed. The aim is to provide some guidance for the rational synthesis of nanopore‐encaged metal catalysts and to inspire their further applications to meet the emerging demands in catalytic fields.

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High Catalytic Activity of Palladium(II)‐Exchanged Mesoporous Sodalite and NaA Zeolite for Bulky Aryl Coupling Reactions: Reusability under Aerobic Conditions

Cited by 34 publications

References 27 publications

Diethanol amine‐functionalized polymer‐supported palladium (0) complex as catalyst for Suzuki cross‐coupling reaction in water

Diethanol amine‐functionalized polymer‐supported palladium (0) complex as catalyst for Suzuki cross‐coupling reaction in water

Mesostructured Zeolites

Ultrasmall Metal Nanoparticles Confined within Crystalline Nanoporous Materials: A Fascinating Class of Nanocatalysts

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