Efficient Aerobic Oxidation of Alcohols using a Hydrotalcite‐Supported Gold Nanoparticle Catalyst

Mitsudome, Takato; Noujima, Akifumi; Mizugaki, Tomoo; Jitsukawa, Koichiro; Kaneda, Kiyotomi

doi:10.1002/adsc.200900239

Cited by 193 publications

(153 citation statements)

References 40 publications

Supporting

Mentioning

140

Contrasting

Unclassified

Order By: Relevance

“…However, metal salts have been seldom used as supports for making gold catalysts [73,[133][134][135][136][137][138][139][140][141][142][143][144]. This is so, not only because the bulk of gold catalysis papers have been following the classic work of Haruta and co-workers who used metal oxide supports [15][16][17], but also because compared with metal salts, metal oxides are more frequently encountered in heterogeneous catalysis.…”

Section: Au/metal Phosphatesmentioning

confidence: 97%

Development of novel supported gold catalysts: A materials perspective

2010

View full text Add to dashboard Cite

Since Haruta et al. discovered that small gold nanoparticles finely dispersed on certain metal oxide supports can exhibit surprisingly high activity in CO oxidation below room temperature, heterogeneous catalysis by supported gold nanoparticles has attracted tremendous attention. The majority of publications deal with the preparation and characterization of conventional gold catalysts (e.g., Au/TiO 2 ), the use of gold catalysts in various catalytic reactions, as well as elucidation of the nature of the active sites and reaction mechanisms. In this overview, we highlight the development of novel supported gold catalysts from a materials perspective. Examples, mostly from those reported by our group, are given concerning the development of simple gold catalysts with single metal-support interfaces and heterostructured gold catalysts with complicated interfacial structures. Catalysts in the first category include active Au/SiO 2 and Au/metal phosphate catalysts, and those in the second category include catalysts prepared by pre-modification of supports before loading gold, by post-modification of supported gold catalysts, or by simultaneous dispersion of gold and an inorganic component onto a support. CO oxidation has generally been employed as a probe reaction to screen the activities of these catalysts. These novel gold catalysts not only provide possibilities for applied catalysis, but also furnish grounds for fundamental research.

show abstract

Section: Au/metal Phosphatesmentioning

confidence: 97%

Development of novel supported gold catalysts: A materials perspective

2010

View full text Add to dashboard Cite

show abstract

“…5). Although many nanogold catalysts [7] supported on hydrotalcite [30], titania [31], ceria [31], and gallia [32] catalyze this reaction with O 2 , only recently was bulk gold reported to catalyze this reaction and then only under more strenuous conditions (90°C, 5 atm O 2 ) [33].…”

Section: Au-catalyzed Decomposition Of Amine N-oxidesmentioning

confidence: 99%

Bulk Gold-Catalyzed Oxidations of Amines and Benzyl Alcohol Using Amine N-Oxides as Oxidants

2012

View full text Add to dashboard Cite

Bulk gold powder (*50 lm) catalyzes the oxidative dehydrogenation of amines to give imines using amine N-oxides (R 3 N-O) as the oxidant. The reaction of dibenzylamine (PhCH 2 -NH-CH 2 Ph) with N-methylmorpholine N-oxide (NMMO) in the presence of gold powder at 60°C produced N-benzylidenebenzylamine (PhCH=N-CH 2 Ph) in 96% yield within 24 h. Benzyl alcohol was oxidized by NMMO to benzaldehyde in[60% yield in the presence of gold powder. Although O 2 was previously shown to oxidize amines in the presence of bulk gold, it is surprising that gold is also capable of catalyzing the oxidation of amines using amine oxides, which are chemically so different from O 2 .

show abstract

“…Therefore, economical and environmental oxidants have been developed. To date, numerous transition-metalcatalyzed aerobic oxidations of alcohols have been developed, such as palladium [15,16], gold [17] and ruthenium [18]. Besides, Uyanik [19] found that the catalytic system consisting of HBr/NaNO 2 was effective for the aerobic oxidation of alcohols.…”

Section: Introductionmentioning

confidence: 98%

Improved synthesis of 2-norbornanone

Zhang

Tao

et al. 2015

Res Chem Intermed

View full text Add to dashboard Cite

Herein a two-step process for the synthesis of 2-norbornanone with 91 % overall yield has been developed. The addition of sublimation inhibitors suppressed the sublimation of norbornene in the process of sulfuric acid-promoted hydration and increased the yield of 2-norbornanol significantly under mild conditions. Additionally, reuse of sulfuric acid has been achieved. A 4-hydroxy-TEMPO/CuCl/TBN triplecomponent catalyst system for the highly selective aerobic oxidation of 2-norbornanol was developed and displayed high atom efficiency and yield.

show abstract

Efficient Aerobic Oxidation of Alcohols using a Hydrotalcite‐Supported Gold Nanoparticle Catalyst

Cited by 193 publications

References 40 publications

Development of novel supported gold catalysts: A materials perspective

Development of novel supported gold catalysts: A materials perspective

Bulk Gold-Catalyzed Oxidations of Amines and Benzyl Alcohol Using Amine N-Oxides as Oxidants

Improved synthesis of 2-norbornanone

Contact Info

Product

Resources

About