The excess emission of greenhouse gases (GHGs) such as CO₂ and CH₄ is posing an acute threat to the environment, and efficient ways are being sought to utilize GHGs to produce syngas (H₂, CO) and lighter hydrocarbons (HCs). In this study, the dry reforming of methane (DRM) has been carried out at 700 °C using La₂O₃ co-supported Ni/MgAl₂O₄ nano-catalyst in a fixed bed thermal reactor. The catalyst is characterized using various techniques such as XRD, FESEM, EDX-mapping, CO₂-TPD, H₂-TPR and TGA. The modified MgAl₂O₄ shows the flake type structure after the addition of La₂O₃. The TPR and TPD analysis shows the highly dispersed metal and strong basic nature of the catalyst consequently enhances the conversion of CO₂ and CH₄. The highest conversion for CH₄ is 87.3% while CO₂ conversion is nearly 89.5% in 20 h of operation time. The selectivity of H₂ and CO approached 50% making the H₂/CO ratio above unity. In the longer time-on-stream (TOS) test, the catalyst shows elevated potential for longer runs showcasing better catalytic activity. The stability of the catalyst is indicated via a proposed reaction mechanism for DRM in operating conditions. Moreover, TGA indicates the lower weight loss of spent catalyst which ascribed the lower formation of carbon during TOS 20 h.

诸如CO ₂和CH ₄的温室气体（GHG）的过量排放正对环境构成严重威胁，并且正在寻找有效的方法来利用温室气体来生产合成气（H ₂，CO）和较轻的碳氢化合物（HCs）。在这项研究中，已在固定床热反应器中使用La ₂ O ₃共负载的Ni / MgAl ₂ O ₄纳米催化剂在700°C进行了甲烷的干重整。使用各种技术，例如XRD，FESEM，EDX-映射，CO ₂ -TPD，H ₂ -TPR和TGA ，对催化剂进行表征。改性MgAl ₂ O ₄示出了添加La ₂ O ₃之后的薄片状结构。TPR和TPD分析表明，金属高度分散，催化剂具有强碱性，因此可提高CO ₂和CH ₄的转化率。CH ₂₀的最高转化率为87.3％，而在20小时的运行时间内CO _2的转化率接近89.5％。H ₂和CO的选择性接近50％，使得H ₂/ CO比率高于1。在较长的运行时间（TOS）测试中，该催化剂显示出较长的运行潜力，显示出更好的催化活性。通过在运行条件下提出的DRM反应机理表明了催化剂的稳定性。此外，TGA表示废催化剂的重量损失较低，这归因于TOS 20小时内碳的形成较少。