Oxidation of Alcohols with Molecular Oxygen on Solid Catalysts

Mallát, Tamás; Baiker, A.

doi:10.1002/chin.200436242

Cited by 102 publications

(133 citation statements)

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“…The first two reactions show the oxidation power of the catalyst. Oxidation of aliphatic alcohols to carboxylic acids can only be done in the presence of strong oxidants (peroxide or molecular O 2 under high pressure) and mostly with noble metal catalysts 29,30 . The second reaction shows the basic nature of the catalyst 29,31 .…”

Section: Resultsmentioning

confidence: 99%

A general approach to crystalline and monomodal pore size mesoporous materials

et al. 2013

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Mesoporous oxides attract a great deal of interest in many fields, including energy, catalysis and separation, because of their tunable structural properties such as surface area, pore volume and size, and nanocrystalline walls. Here we report thermally stable, crystalline, thermally controlled monomodal pore size mesoporous materials. Generation of such materials involves the use of inverse micelles, elimination of solvent effects, minimizing the effect of water content and controlling the condensation of inorganic frameworks by NO x decomposition. Nanosize particles are formed in inverse micelles and are randomly packed to a mesoporous structure. The mesopores are created by interconnected intraparticle voids and can be tuned from 1.2 to 25 nm by controlling the nanoparticle size. Such phenomena allow the preparation of multiple phases of the same metal oxide and syntheses of materials having compositions throughout much of the periodic table, with different structures and thermal stabilities as high as 800°C.

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Section: Resultsmentioning

confidence: 99%

A general approach to crystalline and monomodal pore size mesoporous materials

et al. 2013

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“…Benzyl alcohol is one of the most widely studied substrates 6,9,10 . In the literature, many researchers have reported the aerobic oxidation of benzyl alcohol to benzaldehyde, using a variety of catalytic systems, including supported metal catalysts, with yields up to B99% [9][10][11][12][13][14] , implying that further oxidation to give benzoic acid does not take place. For example, we recently reported the solvent-less, aerobic oxidation of benzyl alcohol to benzaldehyde using supported gold or gold-palladium nanoparticles as catalysts with a selectivity of 99% to benzaldehyde 6,[15][16][17][18] .…”

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confidence: 99%

The benzaldehyde oxidation paradox explained by the interception of peroxy radical by benzyl alcohol

et al. 2014

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“…12 gents. Considering environmental and economic concerns, there is a great demand for using molecular oxygen as primary oxidation [120][121][122][123]. Moreover, homogeneous catalytic systems have difficulties in catalyst separation from the reaction medium and repeated utilization.…”

Section: Science China Materialsmentioning

confidence: 99%

“…Moreover, homogeneous catalytic systems have difficulties in catalyst separation from the reaction medium and repeated utilization. A well-designed heterogeneous catalyst may solve this dilemma because of its facile handling and reusability [122][123][124]. Many noble metal catalysts have been explored, e.g., Pt [125][126][127], Au [118,128,129], Ru [130][131][132], and Pd [61,123,124], as well as various supports such as Al 2 O 3 [133,134], TiO 2 [119,120], MgO [135,136], CeO 2 [128,129], and SiO 2 [123,137], as well as carbon, for use in the liquid phase oxidation of alcohol.…”

Section: Science China Materialsmentioning

confidence: 99%

Graphitized nanocarbon-supported metal catalysts: synthesis, properties, and applications in heterogeneous catalysis

Huang

2017

Sci. China Mater.

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Graphitized nanocarbon materials can be an ideal catalyst support for heterogeneous catalytic systems. Their unique physical and chemical properties, such as large surface area, high adsorption capacity, excellent thermal and mechanical stability, outstanding electronic properties, and tunable porosity, allow the anchoring and dispersion of the active metals. Therefore, currently they are used as the key support material in many catalytic processes. This review summarizes recent relevant applications in supported catalysts that use graphitized nanocarbon as supports for catalytic oxidation, hydrogenation, dehydrogenation, and C-C coupling reactions in liquid-phase and gas-solid phase-reaction systems. The latest developments in specific features derived from the morphology and characteristics of graphitized nanocarbon-supported metal catalysts are highlighted, as well as the differences in the catalytic behavior of graphitized nanocarbon-supported metal catalysts versus other related catalysts. The scientific challenges and opportunities in this field are also discussed. Keywords: nanocarbon materials; graphitized carbon supports; metal catalysts; hetergeneous catalysis INTRODUCTIONCarbon combines its atoms in diverse hybridization states (sp, sp 2 , sp 3 ) to form a variety of polymorphs. These are composed entirely of carbon but have different physical structures and different names, including diamond, graphite, fullerenes, and carbines, among others [1][2][3][4][5]. Because these various and versatile allotropes produce materials with a large range of properties, carbon materials can be used in a number of technological processes, including high-tech catalytic ones [6][7][8][9][10].In heterogeneous catalysis, carbon material plays wellestablished and important roles in a wide range of applications, both as catalyst in its own right and as a unique support material [11][12][13][14][15]. The chemical stability of carbon supports in some specifically aqueous phase biomass conversion surpasses that of metal oxide materials; in addition, carbon materials present other common and key advantages as support materials for catalysis [1,5]. From the point of physical structure, porous carbon can be prepared in different forms (granules, cloth, fibers, pallets, etc.). Due to its chemical properties, carbon structure is resistant to both acidic and basic media. The structure of carbon is stable at high temperature (even above 1023 K under inert atmosphere). The hydrophilic/ hydrophobic nature of carbon can be easily modified. Active metals on the support can be easily reduced. For the purposes of industrial economy and environment, the active phase can be easily recovered. Conventional carbon supports are lower-cost and more easily available than other conventional supports. Although several kinds of carbon materials have been studied, active carbon (AC) [12,[16][17][18][19] and, to a lesser extend, carbon black [20][21][22][23] have long been the most commonly used carbon supports. AC is an amorphous solid prepa...

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Oxidation of Alcohols with Molecular Oxygen on Solid Catalysts

Abstract: For Abstract see ChemInform Abstract in Full Text.

Cited by 102 publications

References 1 publication

A general approach to crystalline and monomodal pore size mesoporous materials

A general approach to crystalline and monomodal pore size mesoporous materials

The benzaldehyde oxidation paradox explained by the interception of peroxy radical by benzyl alcohol

Graphitized nanocarbon-supported metal catalysts: synthesis, properties, and applications in heterogeneous catalysis

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