caa a22 4500 606169717 CHVBK 20210128100713.0 cr unu---uuuuu 210128e20150301xx s 000 0 eng 10.1007/s10098-014-0814-8 doi (NATIONALLICENCE)springer-10.1007/s10098-014-0814-8 CO2/H2 methanation over M*/Mn/Fe-Al2O3 (M*: Pd, Rh, and Ru) catalysts in natural gas; optimization by response surface methodology-central composite design [Elektronische Daten] [Ahmad Ab Halim, Rusmidah Ali, Wan Wan Abu Bakar] The selective catalytic of carbon dioxide (CO2) methanation with hydrogen (H2) over M/Mn/Fe-Al2O3 (M=Pd, Rh, & Ru) oxide catalysts in natural gas was investigated. Among them, Ru/Mn/Fe-Al2O3 catalyst was found to be the most potential catalyst based on activity. The optimization ratio of Ru, calcination temperature, and catalyst weight loading to improve the efficiency of CO2 conversion was studied. The results indicated that the Ru/Mn/Fe-Al2O3 catalyst ratio (5:35:60), which was calcined at 1,000°C, was the best catalyst for CO2 conversion (96.1%) and CH4 formation (66.0%) at reaction temperature at 270°C. Response surface methodology (RSM) involving central composite design (CCD) was employed to optimize Ru/Mn/Fe-Al2O3 and activity parameters (Ru loading, calcination temperature, and catalyst loading) in CO2 methanation. Under CCD, the model indicated that Ru loading was the most significant effective factor, followed by calcination temperature and catalyst loading. The optimum condition for maximum CO2 conversion was estimated at 5.5wt% Ru loading, calcination temperature of 1,010°C, and catalyst loading of 5g. Under these conditions, experimental CO2 conversion efficiency was 95.0%, which was close with the predicted value of 96.6%. Graphical Abstract: Springer-Verlag Berlin Heidelberg, 2014 CO2 methanation nationallicence Natural gas nationallicence Optimization nationallicence Ru/Mn/Fe-Al2O3 nationallicence Response surface methodology nationallicence Ab Halim Ahmad Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Skudai, Johor, Malaysia aut Ali Rusmidah Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Skudai, Johor, Malaysia aut Wan Abu Bakar Wan Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Skudai, Johor, Malaysia aut Clean Technologies and Environmental Policy Springer Berlin Heidelberg 17/3(2015-03-01), 627-636 1618-954X 17:3<627 2015 17 10098 https://doi.org/10.1007/s10098-014-0814-8 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10098-014-0814-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ab Halim Ahmad Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Skudai, Johor, Malaysia aut NATIONALLICENCE 700 1- Ali Rusmidah Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Skudai, Johor, Malaysia aut NATIONALLICENCE 700 1- Wan Abu Bakar Wan Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Skudai, Johor, Malaysia aut NATIONALLICENCE 773 0- Clean Technologies and Environmental Policy Springer Berlin Heidelberg 17/3(2015-03-01), 627-636 1618-954X 17:3<627 2015 17 10098