Catalytic combustion of volatile organic compounds on gold/cerium oxide catalysts

Scirè, Salvatore; Minicò, Simona; Crisafulli, C.; Satriano, Cristina; Pistone, Alessandro

doi:10.1016/s0926-3373(02)00127-3

Cited by 407 publications

(231 citation statements)

References 23 publications

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“…3) but it can rather be the catalytically active species, in a scheme known as Mars and van Krevelen mechanism. 79 Focusing on the oxidation of a hydrocarbon, This reaction scheme occurs in many catalysed oxidations of hydrocarbons by metal oxides, such as: (i) propene oxidation to acrolein by molybdenum and bismuth oxides 81 (ii) total oxidation of volatile organic compounds like benzene and hexane by cerium oxides, 82 and (iii) oxidative dehydrogenation by vanadium oxides. 83 This mechanism is quite important both in industrial applications and for fundamental studies.…”

Section: Oxygen Activation By a Metalmentioning

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: Oxygen Activation By a Metalmentioning

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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“…Removal of volatile trichloroethylene (TCE) pollutants has been known as challenging technology [23][24][25][26][27]. In this work combustion of TCE was carried over cobalt choromite nanoparticles.…”

Section: Catalyst Evaluationmentioning

confidence: 99%

Synthesis of Cobalt Chromite Nanoparticles by Thermolysis of Mixed Cr3+ and Co2+ Chelates of 2-Mercaptopyridin N-Oxide

Edrissi

Keshavarz

2012

Nano-Micro Lett.

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Pure greenish-blue cobalt chromite (CoCr2O4) nanoparticles with narrow particle range of 4.1±1.9 nm and surface area of 78.2 m 2 ·g −1 were synthesized through mixed chelates thermolysis of corresponding metals using 2-Mercaptopyridine N-oxide sodium salt as chelating agent. During the thermolysis procedure, high amount of gases were emitted that led to the formation of nanoparticles with high surface area. The product was characterized by TGA, DTG, XRD, TEM, SEM, LLS, BET and chemical analysis. Design of experiments was performed to fulfill the two levels L4 Taguchi design. It was found that the temperature and time of thermolysis process have significant effect on the particle size reduction. The Oxidation of trichloroethylene was carried out over CoCr2O4 nanocrystallite. Catalytic activity analysis revealed that the synthesis CoCr2O4 possesses high catalytic activity for this process.

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“…It is well known that in the solids prepared by coprecipitation and dried at 353 K, gold is mainly buried into the iron oxy-hydroxide matrix [42], whereas a higher amount of exposed gold is obtained through the deposition-precipitation method [43].…”

Section: Goldmentioning

confidence: 99%

Gold supported on iron oxy-hydroxides: a versatile tool for the synthesis of fine chemicals

2006

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Catalytic combustion of volatile organic compounds on gold/cerium oxide catalysts

Cited by 407 publications

References 23 publications

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

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

Synthesis of Cobalt Chromite Nanoparticles by Thermolysis of Mixed Cr3+ and Co2+ Chelates of 2-Mercaptopyridin N-Oxide

Gold supported on iron oxy-hydroxides: a versatile tool for the synthesis of fine chemicals

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