Photocatalytic selective aerobic oxidation of alcohols to aldehydes and ketones by HPW/MCM-41 in ionic liquids

Shen, Hao-Yu; Mao, Hong-Lei; Ying, Liyan; Xia, Qinghua

doi:10.1016/j.molcata.2007.05.045

Cited by 28 publications

(4 citation statements)

References 52 publications

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“…5% in comparison to acetonitrile. 19 By using POM/ZrO 2 nanocomposites, aliphatic alcohols have been also partially oxidized in good yields albeit after longer reaction times. 20 Fig.…”

Section: Leonardo Palmisanomentioning

confidence: 99%

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Advances in selective conversions by heterogeneous photocatalysis

et al. 2010

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“…5% in comparison to acetonitrile. 19 By using POM/ZrO 2 nanocomposites, aliphatic alcohols have been also partially oxidized in good yields albeit after longer reaction times. 20 Fig.…”

Section: Leonardo Palmisanomentioning

confidence: 99%

“…Fig 19. The effect of different catalysts: (1) P25; (2) home-prepared TiO 2 ; (3) home-prepared N-TiO 2 81.…”

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confidence: 99%

Advances in selective conversions by heterogeneous photocatalysis

et al. 2010

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“…For example, molybdovanadophosphoric acid immobilized on imidazoliummodified SBA-15 exhibited high activity in the aerobic oxidation of benzylic, allylic, and aliphatic alcohols with limited overoxidation [133]. The presence of ionic liquids also improved the photocatalytic activity of 12-tungstophosphoric acid on MCM-41 for alcohol selox [134]. Kantam and coworkers [135] found that basic choline hydroxide helped to stabilize Ru on nanocrystalline MgO, improving the catalyst reuse in primary and secondary alcohol seloxes over several cycles.…”

Section: Ionic Liquids and Watermentioning

confidence: 99%

Mechanistic Studies of Alcohol Selective Oxidation

Lee

2013

Heterogeneous Catalysts for Clean Technology

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IntroductionCatalytic selective oxidation (selox) is an important class of clean chemical transformations employed in the synthesis of valuable chemical intermediates, and a test bed for many fundamental concepts within heterogeneous catalysis and surface science. The selox of alcohols, carbohydrates, and aromatics is especially challenging in terms of understanding the dynamics of chemical reactions at the liquid-solid-gas interface, and requires new spectroscopic tools and analytical protocols to provide quantitative spatiotemporal information on structure-function relationships in order to optimize reaction conditions and design next-generation selox catalysts. Advances in inorganic methodologies to synthesize tunable nanostructures, and synchrotron science and the parallel development of multidimensional spectroscopies, afford new possibilities for understanding the operation of catalysts under working conditions (operando), and thereby nanoengineering the active site for improved activity, selective, and lifetime in selox chemistry. Applications of Selective OxidationThe oxidative dehydrogenation of alcohols represents key steps in the synthesis of aldehyde, ketone, ester, and acid intermediates employed within the fine chemical, pharmaceutical, and agrochemical sectors, with allylic aldehydes in particular high-value components used in the perfume and flavoring industries [1]. For example, crotonaldehyde is an important agrochemical and a valuable precursor for the food preservative sorbic acid, while citronellyl acetate and cinnamaldehyde confer rose/fruity and cinnamon flavors and aromas, respectively. There is also considerable interest in the exploitation of biomass-derived feedstocks such as glycerol (a by-product of biodiesel synthesis from plant or Heterogeneous Catalysts for Clean Technology: Spectroscopy, Design, and Monitoring, First Edition. Edited

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“…107 The presence of ionic liquids also improves the photocatalytic activity of 12-tungstophosphoric acid on MCM-41 for alcohol selox. 108 Kantam and co-workers found that basic choline hydroxide helped to stabilise Ru on nanocrystalline MgO improving catalyst re-use in primary and secondary alcohol selox over several cycles. 109 Water is usually considered the most environmentally benign solvent, however the poor solubility of bulkier alcohols and molecular oxygen under ambient conditions has limited its application (in the absence of surfactants 110 ).…”

Section: Ionic Liquids and Watermentioning

confidence: 99%

Recent advances in the heterogeneously catalysed aerobic selective oxidation of alcohols

Vinod

Wilson

Lee

2010

J. Chem. Technol. Biotechnol.

169

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The heterogeneously catalysed selective aerobic oxidation of alcohols is an important tool for the synthesis of valuable chemical intermediates and a hot topic within both academic and industrial arenas. In this mini-review, selected aspects of catalyst formulation, process operating conditions, and progress in identifying the active sites and surface reaction mechanisms notably through the application of synchrotron radiation, are highlighted.

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Photocatalytic selective aerobic oxidation of alcohols to aldehydes and ketones by HPW/MCM-41 in ionic liquids

Cited by 28 publications

References 52 publications

Advances in selective conversions by heterogeneous photocatalysis

Advances in selective conversions by heterogeneous photocatalysis

Mechanistic Studies of Alcohol Selective Oxidation

Recent advances in the heterogeneously catalysed aerobic selective oxidation of alcohols

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