Optimization of Dry Reforming of Methane over a Ni/MgO Catalyst Using Response Surface Methodology

Abstract

The Box‐Behnken experimental design method was applied to study optimization of dry reforming of methane over a magnesia‐supported nickel catalyst (Ni/MgO). The catalyst was prepared by impregnation method and characterized using Brunauer‐Emmett‐Teller analysis, X‐ray diffraction, thermogravimetric analysis, and transmission electron microscopy. Response surface methodology (RSM) modified by the Box‐Cox method was applied to investigate the effect of different operating parameters on conversion and formation of the different components of the reaction system. The RSM‐generated predictive models verified by analysis of variance were used to simulate the responses of the operating variables. This study revealed that the reaction temperature has the most pronounced effect followed by the CO2/CH4 mole ratio while the gas hourly space velocity had a negligible impact.

Process Optimization for Syngas Production from the Dry Reforming of Methane over 5Ni+3Sr/10Zr+Al Catalyst Using Multiple Response Surface Methodology

“…The maximum and minimum value selection criteria were based on prior research. [70][71][72][73][74] The performance of the methane dry reforming reaction was evaluated by determining the process responses for CO 2 and CH 4 conversions and H 2 /CO ratio based on the selected process variables, which were the feed ratio of CO 2 /CH 4 in the range (1:1-2:1), GHSV in the range (12 000-42 000 ccg −1 h −1 ), and reaction temperature in the range (600-750 °C). [75] Catalytic Activity Test: The catalysts were tested for dry reforming of methane at different reaction temperatures under atmospheric pressure.…”

Catalytic Steam Reforming of Ethanol to Produce Hydrogen: Modern and Efficient Catalyst Modification Strategies

“…[156] One of the most important causes of catalyst deactivation is the carbon deposit formed during the SRE reaction. [59,76,154] Dehydration of ethanol to ethylene (4), followed by polymerization and decomposition to carbon deposit (12), Boudouard reaction (13), [155] methane decomposition (14), and reverse carbon gasification (15), are the main reactions that contribute to carbon deposit formation during ethanol conversion. [156,157] nC 2 H 4 !…”

“…Dry methane reforming is theoretically easier than steam reforming, but with lower hydrogen yield [8,9] . The dry reforming product of methane is also syngas with carbon monoxide to hydrogen ratio of one which makes it a perfect feedstock for synthesis of Fischer‐Tropsch [10–12] …”

“…[8,9] The dry reforming product of methane is also syngas with carbon monoxide to hydrogen ratio of one which makes it a perfect feedstock for synthesis of Fischer-Tropsch. [10][11][12] Natural gas/methane or heavy hydrocarbon fuels are combined with a small amount of oxygen in a process known as partial oxidation. In this procedure, heat is produced when feed partially burns with oxygen.…”