Methane oxidative coupling over different alkalidoped catalysts: A comparison of ceramic membrane reactors and conventional fixed bed reactors

1996 ◽  
Vol 59 (2) ◽  
pp. 277-284 ◽  
Author(s):  
M. P. Miguel ◽  
J. Coronas ◽  
M. Menéndez ◽  
J. Santamaría
Keyword(s):  
Oxidative Coupling ◽  
Ceramic Membrane ◽  
Fixed Bed ◽  
Membrane Reactors ◽  
Methane Oxidative Coupling ◽  
Fixed Bed Reactors

Comparative Study on the Kinetic Modeling of the Oxidative Coupling of Methane in Laboratory and Bench Scales

2008 ◽  
Vol 3 (1) ◽  
Author(s):  
Nakisa Yaghobi ◽  
Mir Hamid Reza Ghoreishy
Keyword(s):  
Kinetic Models ◽  
Oxidative Coupling ◽  
Consumption Rate ◽  
Linear Regression Analysis ◽  
Fixed Bed ◽  
Space Velocity ◽  
Oxidative Coupling Of Methane ◽  
Power Law Model ◽  
Fixed Bed Reactors ◽  
Rate Of Reaction

The aim of this work is to develop and compare kinetic models for the oxidative coupling of methane (OCM) based on the gas hourly space velocity (GHSV) value and CH4/O2 ratio in two scales: laboratory and bench. The experiments were carried out in tubular fixed bed reactors at 1023 K, using 0.7-1.5 g and 30 g of perovskite titanate as the reaction catalyst for laboratory and bench scales, respectively. The various GHSVs (8000, 12000, 17000 h-1) and (3400, 4300, 5200 h-1) and methane to oxygen ratios (1, 2, 3, 4, 7.5) and (2, 2.5, 3) were selected for laboratory and bench scales, respectively. We have proposed a mechanism in which the consumption rate of methane is always twice of production rate of C2. A power law model was assumed for rate of reaction in terms of partial pressure of oxygen and methane. Using a linear regression analysis, the kinetic models were determined. Comparison of the calculated rate of reaction with the experimentally measured data confirmed the accuracy and applicability of the developed model for both scales.

scholarly journals Real-time multi-length scale chemical tomography of fixed bed reactors during the oxidative coupling of methane reaction

2020 ◽  
Vol 386 ◽  
pp. 39-52 ◽  
Author(s):  
Antonis Vamvakeros ◽  
Dorota Matras ◽  
Simon D.M. Jacques ◽  
Marco di Michiel ◽  
Stephen W.T. Price ◽  
...  
Keyword(s):  
Real Time ◽  
Oxidative Coupling ◽  
Fixed Bed ◽  
Oxidative Coupling Of Methane ◽  
Length Scale ◽  
Fixed Bed Reactors
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