Oxidation, Redox Disproportionation and Chain Termination Reactions Catalysed by the Pd-561 Giant Cluster

Kovtun, G. A.; Kameneva, Tatiana; Hladyi, Serhy; Starchevsky, Mykhailo K.; Pazdersky, Yury; Stolarov, Igor P.; Варгафтик, М. Н.; Моисеев, И. И.

doi:10.1002/1615-4169(200210)344:9<957::aid-adsc957>3.0.co;2-v

Cited by 42 publications

(13 citation statements)

References 6 publications

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“…Indeed, further investigation revealed that the Pd(II) neocuproin complex dissociates completely to afford Pd nanoclusters which are the actual catalyst [85]. Moiseev and coworkers [68,86] had previously shown that giant Pd clusters (nowadays known as Pd nanoclusters) are good catalysts for the oxidation of alcohol moieties and selectively oxidize allylic CÀH bonds in alkenes. More recently, Pd nanoparticles supported on hydroxyapatite [87] were shown to be an excellent catalyst for aerobic alcohol oxidations.…”

Section: ð5:11þmentioning

confidence: 72%

Modern Oxidation of Alcohols Using Environmentally Benign Oxidants

Arends

Sheldon

2010

Modern Oxidation Methods

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Section: ð5:11þmentioning

confidence: 72%

Modern Oxidation of Alcohols Using Environmentally Benign Oxidants

Arends

Sheldon

2010

Modern Oxidation Methods

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“…80-90%, and the remaining product was toluene over our Pd/SBA-15 samples with different Pd contents. It is of interest to note that such a selectivity pattern is quite similar to that reported for the aerobic oxidation of benzyl alcohol over a Pd 561 phen 60 (OAc) 180 (phen = 1,10-phenanthroline) giant cluster (Pd metal, 2-3 nm, total *5 nm) [36]. It has been proposed that the disproportionation of benzyl alcohol to benzaldehyde and toluene (Eq.…”

Section: Catalytic Behavior Of the Pd/sba-15 For Solventfree Aerobic mentioning

confidence: 99%

“…4) occurred in parallel to the selective oxidation of benzyl alcohol to benzyladehyde (Eq. 5) [36]. Over our catalyst, we found that the use of N 2 instead of O 2 for conversion of benzyl alcohol caused the formation of benzaldehyde and toluene with a ratio of 55/45 (Table 4).…”

Section: Catalytic Behavior Of the Pd/sba-15 For Solventfree Aerobic mentioning

confidence: 99%

Preparation, Characterization and Catalytic Activity of Palladium Nanoparticles Encapsulated in SBA-15

Zhang

Wang

et al. 2007

Catal Lett

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A simple adsorption method was studied for the preparation of SBA-15-encapsulated palladium nanoparticles. This method employed the SBA-15 with organic template removed by ethanol extraction for the adsorption of cationic Pd precursors in alkaline solution followed by calcination and H 2 reduction. The pH of the solution was found to be a critical factor in determining the palladium content and the ordered mesoporous structure. Our characterizations revealed that the Pd nanoparticles prepared by this method were located inside the mesoporous channels and were quite uniform in size (mostly 3-4 nm). The SBA-15-encapsulated uniform Pd nanoparticles were efficient catalysts for solvent-free aerobic oxidation of alcohols.

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“…Alternatively, a completely different catalytic species than the mononuclear palladium-phenanthroline complex suggested above in completely aqueous systems could be present. The distinctive influence of coordinating solvents could point in the direction of palladium-nanoparticles [36]. Further studies are needed to investigate the identity of the active species under water/co-solvent conditions.…”

Section: Substrate Scopementioning

confidence: 99%