Heterogeneously Catalyzed Partial Oxidation of Methane in Supercritical Water

Bröll, Dirk; Krämer, Alexander; Vogel, Herbert

doi:10.1002/ceat.200303009

Cited by 15 publications

(11 citation statements)

References 9 publications

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“…Recent efforts in heterogeneously catalyzed selective oxidation have been directed toward continued work with methane (Brö ll et al, 2003), converting methanol to formaldehyde (Bröll et al, 2001), isobutene to isobutyraldehyde (Richter and Vogel, 2003), cyclohexane to cyclohexanol and cyclohexanone (Richter and Vogel, 2002) and propane to oxygenates (Armbruster et al, 2001b). The catalysts used in these studies include silver, platinum, gold, and copper, both as pure metals and as alloys, and Mn and Co oxides.…”

Section: Heterogeneous Catalysismentioning

confidence: 98%

Recent Advances in Catalytic Oxidation in Supercritical Water

Savage

Dunn

2006

Combustion Science and Technology

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Section: Heterogeneous Catalysismentioning

confidence: 98%

Recent Advances in Catalytic Oxidation in Supercritical Water

Savage

Dunn

2006

Combustion Science and Technology

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“…This is, in part, due to the limited stability of both catalysts and organic substrates at the conditions above the critical point of H 2 O (374 °C, 22.06 MPa), especially in the presence of oxygen. Although some transition‐metal oxides are stable under oxidizing conditions in supercritical H 2 O,258 this is not the case for most metal catalysts such as Cu, Ag or Ag/Au 259…”

Section: Safety Aspectsmentioning

confidence: 99%

Selective Catalytic Oxidation of CH Bonds with Molecular Oxygen

et al. 2012

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Although catalytic reductions, cross‐couplings, metathesis, and oxidation of CC double bonds are well established, the corresponding catalytic hydroxylations of CH bonds in alkanes, arenes, or benzylic (allylic) positions, particularly with O2, the cheapest, “greenest”, and most abundant oxidant, are severely lacking. Certainly, some promising examples in homogenous and heterogenous catalysis exist, as well as enzymes that can perform catalytic aerobic oxidations on various substrates, but these have never achieved an industrial‐scale, owing to a low space‐time‐yield and poor stability. This review illustrates recent advances in aerobic oxidation catalysis by discussing selected examples, and aims to stimulate further exciting work in this area. Theoretical work on catalyst precursors, resting states, and elementary steps, as well as model reactions complemented by spectroscopic studies provide detailed insight into the molecular mechanisms of oxidation catalyses and pave the way for preparative applications. However, O2 also poses a safety hazard, especially when used for large scale reactions, therefore sophisticated methodologies have been developed to minimize these risks and to allow convenient transfer onto industrial scale.

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“…The POX reaction pathway of p-Xylene has been examined by Kim et al [12]. In addition, partial oxidation reaction concerning catalysts in SCW has been explored by some researchers [13,14]. Supercritical water gasification (SCWG) is an endothermic process, but POX technology can integrate the endothermic gasification reaction with the exothermic oxidation reaction in one reactor to realize the internal coupling of the heat transfer and the reaction process [8].…”

Section: Introductionmentioning

confidence: 99%