This research project focuses on the development of catalysts for syngas production by synthesizing Ni–Co bimetallic catalyst using aluminum oxide (Al₂O₃) and magnesium oxide (MgO) as the catalyst support. Ni/Al₂O₃ (CAT-1), Ni–Co/Al₂O₃ (CAT-2) and Ni–Co/Al₂O₃–MgO (CAT-3) nanocatalysts were synthesized by sol–gel method with citric acid as the gelling agent, and used in the dry reforming of methane (DRM). The objective of this study is to investigate the effects of Al₂O₃ and MgO addition on the catalytic properties and the reaction performance of synthesized catalysts in the DRM reactions. The characteristics of the catalyst are studied using field emission scanning electron microscope (FESEM), Brunauer–Emmett–Teller (BET), X-ray powder diffraction (XRD), transmission electron microscopy, H₂-temperature programmed reduction, CO₂-temperature programmed desorption and temperature programmed oxidation analysis. The characteristics of the catalyst are dependent on the type of support, which influences the catalytic performances. FESEM analysis showed that CAT-3 has irregular shape morphology, and is well dispersed onto the catalyst support. BET results demonstrate high surface area of the synthesized catalyst due to high calcination temperature during catalysts preparation. Moreover, the formation of MgAl₂O₄ spinel-type solution in CAT-3 is proved by XRD analysis due to the interaction between alumina lattice and magnesium metal which has high resistance to coke formation, leading to stronger metal surface interaction within the catalyst. The CO₂ methane dry reforming is executed in the tubular furnace reactor at 1073.15 K, 1 atm and CH₄/CO₂ ratio of unity to investigate the effect of the mentioned catalysts. Ni–Co/Al₂O₃–MgO gave the highest catalyst performance compared to the other synthesized catalysts owning to the strong metal–support interaction, high stability and significant resistance to carbon deposition during the DRM reaction.

中文翻译：

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Ni-Co负载的Al 2 O 3 -MgO催化剂上的甲烷干法重整以生产合成气

该研究项目致力于通过使用氧化铝（Al ₂ O ₃）和氧化镁（MgO）作为催化剂载体合成Ni-Co双金属催化剂来开发用于合成气的催化剂。采用溶胶-凝胶法合成了Ni / Al ₂ O ₃（CAT-1），Ni–Co / Al ₂ O ₃（CAT-2）和Ni–Co / Al ₂ O ₃ –MgO（CAT-3）纳米催化剂。柠檬酸作为胶凝剂，用于甲烷的干重整（DRM）。这项研究的目的是调查Al ₂ O _3的影响MgO的加入对DRM反应中合成催化剂的催化性能和反应性能的影响。使用场发射扫描电子显微镜（FESEM），Brunauer–Emmett–Teller（BET），X射线粉末衍射（XRD），透射电子显微镜，H _2-程序升温还原，CO ₂对催化剂的特性进行了研究。程序升温解吸和程序升温氧化分析。催化剂的特性取决于载体的类型，这会影响催化性能。FESEM分析表明，CAT-3具有不规则的形状形态，并很好地分散在催化剂载体上。BET结果表明由于催化剂制备期间的高煅烧温度，合成催化剂的表面积高。此外，由于氧化铝晶格和镁金属之间的相互作用具有较高的抗焦炭形成性，从而导致催化剂内部更强的金属表面相互作用，因此通过XRD分析证明了CAT-3中MgAl ₂ O ₄尖晶石型溶液的形成。一氧化碳₂在管式炉反应器中以1073.15K，1atm和CH ₄ / CO _2的比率为一体进行甲烷干重整，以研究上述催化剂的效果。与其他合成催化剂相比，Ni-Co / Al ₂ O ₃ -MgO具有最高的催化剂性能，它在DRM反应过程中具有强大的金属-载体相互作用，高稳定性和显着的抗碳沉积性。