Effect of CO2 dilution on propane–air isothermal catalytic combustion on platinum

Mitu, Maria; Razus, Domnina; Oancea, Dumitru

doi:10.1007/s10973-017-6167-x

Cited by 8 publications

(2 citation statements)

References 27 publications

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“…The catalysts for VOCs incineration should effectively operate at relatively low temperatures to avoid additional heating of flue gases as well as to limit the formation of NO x by thermal mechanism [3]. Noble metals, such as Pt [4][5][6][7], Pd [8][9][10], Rh [11] and Au [12,13], belong to the most active and effective components of the catalysts for incineration of broad range of various VOCs. On the other hand, high cost of noble metals significantly limits commercial utilisation of such catalysts.…”

Section: Introductionmentioning

confidence: 99%

Hydrotalcite-derived Co-containing mixed metal oxide catalysts for methanol incineration

Basąg

Kovanda

Piwowarska

et al. 2017

J Therm Anal Calorim

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The Co-Mg-Al mixed metal oxides were prepared by calcination of co-precipitated hydrotalcite-like precursors at various temperatures (600-800°C), characterised with respect to chemical (AAS) and phase (XRD) composition, textural parameters (BET), form and aggregation of cobalt species (UV-vis-DRS) and their redox properties (H 2 -TPR, cyclic voltammetry). Moreover, the process of thermal decomposition of hydrotalcite-like materials to mixed metal oxide systems was studied by thermogravimetric method combined with the analysis of gaseous decomposition products by mass spectrometry. Calcined hydrotalcite-like materials were tested as catalysts for methanol incineration. Catalytic performance of the oxides depended on cobalt content, Mg/Al ratio and calcination temperature. The catalysts with lower cobalt content, higher Mg/Al ratio and calcined at lower temperatures (600 or 700°C) were less effective in the process of methanol incineration. In a series of the studied catalysts, the best results, with respect to high catalytic activity and selectivity to CO 2 , were obtained for the mixed oxide with Co:Mg:Al molar ratio of 10:57:33 calcined at 800°C. High activity of this catalyst was likely connected with the presence of a Co-Mg-Al spinel-type phases, containing easy reducible Co 3? cations, formed during high-temperature treatment of the hydrotalcite-like precursor.

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Section: Introductionmentioning

confidence: 99%

Hydrotalcite-derived Co-containing mixed metal oxide catalysts for methanol incineration

Basąg

Kovanda

Piwowarska

et al. 2017

J Therm Anal Calorim

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“…The influence of the environmental conditions on the reaction products was studied by Mitu et al 11,12 Studies concerning the influence of the shape of a hot surface have been reported by Bothe and Steen 13 . Studies concerning ignition on platinum wires have been reported by Mitu et al 14,15 and Oancea et al 16‐20 …”

Section: Introductionmentioning

confidence: 99%

Ignition temperature of combustible liquids in mixtures of air with nitrous oxide

et al. 2021

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Summary While ignition temperatures in the air are well known for a large number of flammable substances and to a lesser extent in pure oxygen too, no such values exist for ignition temperatures in nitrous oxide in spite of the fact that nitrous oxide is used as oxidizer in combustion processes or aerosol propellant in industry. The ignition temperatures of some pure compounds have now been investigated in oxidizer mixtures of nitrous oxide and air with varying concentration of nitrous oxide up to 80 vol% using a slightly modified standardized apparatus. The ignition temperature increases with increasing nitrous oxide concentration. Up to 580°C, none of the investigated substances ignited in pure nitrous oxide.

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Explosion mitigation of methane‐air mixture in combined application of inert gas and ABC dry powders in a closed compartment

Quan

et al. 2019

Process Safety Progress

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The explosion is one of the most serious safety incidents occurring in the application of the gas methane in industrial process. The new developments in attenuating the destruction and environmental hazard of this explosion are conducted using the combined inert gas and ABC dry powder. The explosive characteristic parameters including flame configuration, velocity of flame propagation, explosion pressure, and pressure rising rate are quantified and revealed. The difference of explosion mitigation effect of ordinary and ultra‐fine ABC dry powders are examined based upon the specific surface area and the settling velocity. As the concentration of ordinary or ultra‐fine ABC dry powder increases, the explosion pressure initially increases and decreases afterwards, indicating that there is an optimal mass concentration of explosion mitigation for both powders. The effect of ignition delay time on the explosion mitigation of ultra‐fine ABC dry powder is characterized on the basis of the turbulent lever and the dry powder particle settling state. Moreover, the mechanisms of explosion mitigation with CO2 and the ultra‐fine ABC dry powder are fully revealed both on the physical and chemical properties. The present research provides basic data and theoretical guidance for prevention and controlling of gas explosion accidents.

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Effect of CO2 dilution on propane–air isothermal catalytic combustion on platinum

Cited by 8 publications

References 27 publications

Hydrotalcite-derived Co-containing mixed metal oxide catalysts for methanol incineration

Hydrotalcite-derived Co-containing mixed metal oxide catalysts for methanol incineration

Ignition temperature of combustible liquids in mixtures of air with nitrous oxide

Explosion mitigation of methane‐air mixture in combined application of inert gas and ABC dry powders in a closed compartment

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