Complete oxidation of methane at low temperature over noble metal based catalysts: a review

Gélin, P.; Primet, Michel

doi:10.1016/s0926-3373(02)00076-0

Cited by 1,038 publications

(743 citation statements)

References 112 publications

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“…181 A very large number of studies has been dedicated to this subject. [182][183][184] In this review, and with a focus to physicochemical aspects, among the most notable advances in this area there are yttrium stabilised zirconia catalysts 185 and N-bridged high-valent diiron-oxo species. 186 In particular, yttrium stabilized zirconia catalysts (YSZ) appear to be promising materials for the oxidation of methane into methanol, 187,188 was observed at the gas/solid interface of LaMnO 3 .…”

Section: Methane and Hydrocarbons Partial Oxidationmentioning

confidence: 99%

Catalytic oxygen activation versus autoxidation for industrial applications: a physicochemical approach

Liu

Ryabenkova

Conte

2015

Phys. Chem. Chem. Phys.

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The activation and use of oxygen for the oxidation and functionalization of organic substrates is among the most important reactions in a chemist's toolbox. Nevertheless, despite the vast literature on catalytic oxidation, the phenomenon of autoxidation, an ever-present background reaction that occurs in virtually every oxidation process, is often neglected. In contrast, autoxidation can affect the selectivity to a desired product, to those dictated by pure freeradical chain pathways, thus affecting the activity of any catalyst used to carry out a reaction.This critical review compares catalytic oxidation routes by transition metals versus autoxidation, particularly focusing on the industrial context, where highly selective and "green" processes are needed. Furthermore, the application of useful tests to discriminate between different oxygen activation routes, especially in the area of hydrocarbon oxidation, with the aim of an enhanced catalyst design, is described and discussed. In fact, one of the major targets of selective oxidation is the use of molecular oxygen as ultimate oxidant, combined with the development of catalysts capable to perform the catalytic cycle in a real energy and cost effective manner on a large scale. To achieve this goal, insights from metallo-proteins that could find application in some areas of industrial catalysis are presented, as well as considering the physicochemical principles that are at the fundament of oxidation and autoxidation processes.3

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Section: Methane and Hydrocarbons Partial Oxidationmentioning

confidence: 99%

Catalytic oxygen activation versus autoxidation for industrial applications: a physicochemical approach

Liu

Ryabenkova

Conte

2015

Phys. Chem. Chem. Phys.

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“…Use of natural gas vehicles is a programme launched in Europe and other countries towards diversity of energy sources and utilization of methane, the inexpensive, earth-abundant energy sources [9][10][11][12] . The exhaust of natural gas engines has the following features 9 : low temperature (o500-550°C), low CH 4 concentration (about 1,000 p.p.m.…”

mentioning

confidence: 99%

“…The exhaust of natural gas engines has the following features 9 : low temperature (o500-550°C), low CH 4 concentration (about 1,000 p.p.m. ), large amount of water vapour (10%), high O 2 :CH 4 ratio, and presence of NO x or SO x (refs 9,12).…”

mentioning

confidence: 99%

“…), large amount of water vapour (10%), high O 2 :CH 4 ratio, and presence of NO x or SO x (refs 9,12). A complete oxidation of methane at a relatively low temperature (o500-550°C) is critical for abating unburned methane of the exhaust of engines of natural gas vehicles 9,[11][12][13] . Pt and Pd supported on Al 2 O 3 are the well-studied catalysts 9 .…”

mentioning

confidence: 99%

“…A complete oxidation of methane at a relatively low temperature (o500-550°C) is critical for abating unburned methane of the exhaust of engines of natural gas vehicles 9,[11][12][13] . Pt and Pd supported on Al 2 O 3 are the well-studied catalysts 9 . Significant efforts have been made in fundamental understanding of mechanism of the complete oxidation of methane 14 and optimization of catalytic performances of these Pt-or Pd-based catalysts 9 .…”

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confidence: 99%

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Understanding complete oxidation of methane on spinel oxides at a molecular level

et al. 2015

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It is crucial to develop a catalyst made of earth-abundant elements highly active for a complete oxidation of methane at a relatively low temperature. NiCo 2 O 4 consisting of earth-abundant elements which can completely oxidize methane in the temperature range of 350-550°C. Being a cost-effective catalyst, NiCo 2 O 4 exhibits activity higher than precious-metal-based catalysts. Here we report that the higher catalytic activity at the relatively low temperature results from the integration of nickel cations, cobalt cations and surface lattice oxygen atoms/oxygen vacancies at the atomic scale. In situ studies of complete oxidation of methane on NiCo 2 O 4 and theoretical simulations show that methane dissociates to methyl on nickel cations and then couple with surface lattice oxygen atoms to form -CH 3 O with a following dehydrogenation to À CH 2 O; a following oxidative dehydrogenation forms CHO; CHO is transformed to product molecules through two different sub-pathways including dehydrogenation of OCHO and CO oxidation.

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Chemical and Biochemical Sensors, 1. Fundamentals

Bârsan

Gauglitz

Oprea

et al. 2016

Ullmann's Encyclopedia of Industrial Chemistry

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Complete oxidation of methane at low temperature over noble metal based catalysts: a review

Cited by 1,038 publications

References 112 publications

Catalytic oxygen activation versus autoxidation for industrial applications: a physicochemical approach

Catalytic oxygen activation versus autoxidation for industrial applications: a physicochemical approach

Understanding complete oxidation of methane on spinel oxides at a molecular level

Chemical and Biochemical Sensors, 1. Fundamentals

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