The oxidative coupling of methane (OCM) is a closely related reaction process involving the transformation of methane (CH₄) and O₂ mixtures into value-added chemicals such as ethylene and ethane (i.e. C₂₊). This work presents the effects of metal oxide additives into the Na₂WO₄-Ti/SiO₂ catalyst on the performance of the OCM reaction. Several metal oxide additives—including oxides of Co, Mn, Cu, Fe, Ce, Zn, La, Ni, Zr, Cr, and V—were investigated with the Na₂WO₄-Ti/SiO₂ catalyst. All of the catalysts were prepared using co-impregnation and the catalyst activity test was performed in a plug flow reactor at a reactor temperature range of 600–800 °C and atmospheric pressure. The physicochemical properties of the prepared catalysts relating to their catalytic activity were discussed by using the information of X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM) measurements. Na₂WO₄-Ti/SiO₂ added Mn was found to be the most active catalyst, involving shifts of binding energies of W 4f and Ti 2p toward lower binding energies. Moreover, a variety of operating conditions—including reactant- to-nitrogen gas ratio, catalyst mass, reactor temperature, and total feed flow rate—were intensively examined for the OCM reaction using the Na₂WO₄-Ti-Mn/SiO₂ catalyst. The maximum C₂₊ yield was subsequently discovered at 22.09% with 62.3% C₂₊ selectivity and 35.43% CH₄ conversion. Additionally, the stability of the Na₂WO₄-Ti-Mn/SiO₂ catalyst was also monitored with time on stream for 24 h.

甲烷的氧化偶联（OCM）是密切相关的反应过程，涉及将甲烷（CH ₄）和O ₂混合物转化为增值化学品，例如乙烯和乙烷（即C ₂₊）。这项工作提出了Na ₂ WO ₄ -Ti / SiO ₂催化剂中金属氧化物添加剂对OCM反应性能的影响。用Na ₂ WO ₄ -Ti / SiO ₂研究了几种金属氧化物添加剂，包括Co，Mn，Cu，Fe，Ce，Zn，La，Ni，Zr，Cr和V的氧化物催化剂。所有催化剂均采用共浸渍法制备，并在活塞流反应器中在600–800°C的反应器温度和大气压下进行催化剂活性测试。通过使用X射线衍射（XRD），X射线光电子能谱（XPS）和扫描电子显微镜（SEM）的信息，讨论了所制备催化剂的物理化学性质及其催化活性。Na ₂ WO ₄ -Ti / SiO ₂发现添加的Mn是最具活性的催化剂，涉及W 4f和Ti 2p的结合能向较低的结合能的转变。此外，针对使用Na ₂ WO ₄ -Ti-Mn / SiO ₂催化剂进行的OCM反应，对各种操作条件（包括反应物与氮气的比例，催化剂质量，反应器温度和总进料流速）进行了深入检查。。随后发现最大的C ₂₊产率为22.09％，具有62.3％的C ₂₊选择性和35.43％的CH ₄转化率。另外，还对Na ₂ WO ₄ -Ti-Mn / SiO ₂催化剂的稳定性进行了24小时的在线监测。