Ignition and extinction of surface and homogeneous oxidation of NH<sub>3</sub> and CH<sub>4</sub>

Williams, W.R.; Zhao, Jin; Schmidt, L.D.

doi:10.1002/aic.690370502

Cited by 47 publications

(12 citation statements)

References 24 publications

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“…In the region of incomplete oxygen conversion, formation of CO, N 2 [105]. In order to obtain evidence for catalytically initiated gas-phase reactions, laser-induced fluorescence measurements were carried out [89].…”

Section: Hcn Formationmentioning

confidence: 99%

Hydrocyanic Acid (HCN) Production

Sauer¹,

Bewersdorf²,

Köstner³

et al. 2008

Handbook of Heterogeneous Catalysis

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The sections in this article are Introduction The A ndrussow Process History Fundamentals Production of Liquid Hydrocyanic Acid Pressure Variant Oxygen Variant Ammonia Recycling Reactor and Catalyst The BMA Process Overview Development of the Catalyst Development of the BMA Tubes Reactor Design Mechanism and Kinetics of HCN formation in the BMA and A ndrussow Processes Kinetics and Mechanism of the BMA Process Thermodynamic Context HCN and N 2 Formation Coke Formation On the Role of Gas‐Phase Reactions Catalytically Active Centers Kinetics and Mechanism of the A ndrussow Process Thermodynamic Relationships HCN Formation HCN Hydrolysis Catalytically Active Centers Final Remarks

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Section: Hcn Formationmentioning

confidence: 99%

Hydrocyanic Acid (HCN) Production

Sauer¹,

Bewersdorf²,

Köstner³

et al. 2008

Handbook of Heterogeneous Catalysis

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show abstract

“…A number of catalyst-driven reactions, which are of significance in the chemical process, there can be a cognizable reaction within the bulk (homogeneous reactions) and on the catalyst surface. Song et al [1][2][3] and Williams et al [4,5] presented some examples of such homogeneous and heterogeneous reactions. Additionally, Chaudhary and Merkin [6,7] have been presented a simple model for homogeneous and heterogeneous reactions in boundary layer flow in which the heterogeneous (surface) reaction is considered to be raised by first order kinetics while homogeneous (bulk) reaction by isothermal cubic autocatalator kinetics.…”

Section: Introductionmentioning

confidence: 99%

Unsteady homogeneous-heterogeneous reactions in MHD nanofluid mixed convection flow past a stagnation point of an impulsively rotating sphere

2021

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This paper establishes a mathematical analysis for describing the homogeneous and heterogeneous chemical reactions in the nearness of stagnation region of a sphere immersed in a single-phase nanofluid due to a Newtonian heating. The flow is resulted by an impulsively rotating sphere, and the nanofluid involves nanoparticles of Copper and Ferro. The available unsteady-states of the considered system are given in the case when the diffusion coefficients of both reactant and auto catalyst have the same size. The resulting non-linear dimensionless coupled partial differential equations in which governing the mixed convection flow have been tackled numerically via an implicit finite difference technique in combination with the quasi-linearization scheme. The similarities and differences in the behavior of physical pertinent fluid parameters have been elaborated and discussed graphically. It has been clarified that the nanofluid velocity and temperature profiles grow gradually by adding nanoparticles in the base fluid. Again it is noticed from present contribution that concentration of the nanofluid is decreases function by rising the strength of homogeneous and heterogeneous chemical reactions. Finally, numerical computations of the skin friction and heat transfer factors are presented.

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“…Many chemical reactions such as combustion, catalysis, and biomedical systems consist of homogeneous and heterogeneous reactions simultaneously. Reactions such as propane oxidation over platinum and methane/ammonia have great significance in the chemical industry [6][7] . Chaudhary and Merkin [8] discussed the homogeneousheterogeneous effects in the forced convection stagnation point flow of viscous fluid.…”

Section: Introductionmentioning

confidence: 99%

Note on characteristics of homogeneous-heterogeneous reaction in flow of Jeffrey fluid

Farooq

Alsaedi

Hayat

2015

Appl. Math. Mech.-Engl. Ed.

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This letter describes the characteristics of homogeneous-heterogeneous reaction in the boundary layer flow of a Jeffrey fluid due to an impermeable horizontal stretching sheet. An analysis is carried out through the similar values of reactant and auto catalyst diffusion coefficients. Heat released by the reaction is not accounted. The exact solution for the flow of the Jeffrey fluid is constructed. The series solution for the concentration equation is derived. The velocity and concentration fields reflecting the impact of interesting parameters are plotted and examined.

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Ignition and extinction of surface and homogeneous oxidation of NH₃ and CH₄

Cited by 47 publications

References 24 publications

Hydrocyanic Acid (HCN) Production

Hydrocyanic Acid (HCN) Production

Unsteady homogeneous-heterogeneous reactions in MHD nanofluid mixed convection flow past a stagnation point of an impulsively rotating sphere

Note on characteristics of homogeneous-heterogeneous reaction in flow of Jeffrey fluid

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Ignition and extinction of surface and homogeneous oxidation of NH3 and CH4

Cited by 47 publications

References 24 publications

Hydrocyanic Acid (HCN) Production

Hydrocyanic Acid (HCN) Production

Unsteady homogeneous-heterogeneous reactions in MHD nanofluid mixed convection flow past a stagnation point of an impulsively rotating sphere

Note on characteristics of homogeneous-heterogeneous reaction in flow of Jeffrey fluid

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Ignition and extinction of surface and homogeneous oxidation of NH₃ and CH₄