Chemical Engineering Department, College of Engineering, P.O. Box 800, Riyadh 11421, Saudi Arabia.
King Abdullah City for Atomic & Renewable Energy: Energy Research & Innovation Center (ERIC) in Riyadh, Riyadh 11451, Saudi Arabia.
Molecules. 2020 Oct 29;25(21):5029. doi: 10.3390/molecules25215029.
Catalysts of 10% Ni, supported on promoted alumina, were used to accomplish the partial oxidation of methane. The alumina support was doped with oxides of Mo, Mg, Ti and Y. An incipient wetness impregnation technique was used to synthesize the catalysts. The physicochemical properties of the catalysts were described by XRD, H-TPR (temperature programmed reduction), BET, TGA, CO-TPD (temperature-programmed desorption) and Raman. The characterization results denoted that Ni has a strong interaction with the support. The TGA investigation of spent catalysts displayed the anticoking enhancement of the promoters. The impact of the support promoters on the catalyst stability, methane conversion and H yield was inspected. Stability tests were done for 460 min. The H yields were 76 and 60% and the CH conversions were 67 and 92%, respectively, over Ni/AlO+Mg, when the reaction temperatures were 550 and 650 °C, respectively. The performance of the present work was compared to relevant findings in the literature.
负载在促进氧化铝上的 10%镍催化剂用于实现甲烷的部分氧化。氧化铝载体掺杂有 Mo、Mg、Ti 和 Y 的氧化物。采用初始湿浸渍技术合成催化剂。通过 XRD、H-TPR（程序升温还原）、BET、TGA、CO-TPD（程序升温脱附）和 Raman 对催化剂的物理化学性质进行了描述。表征结果表明 Ni 与载体之间具有很强的相互作用。失活催化剂的 TGA 研究表明促进剂具有增强抗焦性能。考察了载体促进剂对催化剂稳定性、甲烷转化率和 H 产率的影响。稳定性测试进行了 460 分钟。当反应温度分别为 550 和 650°C 时，Ni/AlO+Mg 上的 H 产率分别为 76%和 60%，CH 转化率分别为 67%和 92%。将本工作的性能与文献中的相关发现进行了比较。
