The Oxidative Coupling of Methane (OCM) over M-Na-Mn/SiO2 catalysts (M=W, Cr, Nb and V) was investigated using a continuous-flow quartz reactor at 775°C, 1 atm and 100 cm3min-1 gas flow rates, and correlated with the observed structure and redox properties.The interaction effects of the metal-metal and metal-support on the...

In this study, we aimed to enhance the catalytic activity of perovskite catalysts and elucidate their behavior in oxidative coupling methane (OCM), using alkali-added LaAlO3 catalysts. We prepared LaAlO3_XY (X = Li, Na, K, Y mol %) applied them OCM reaction. The results showed that catalysts’ activities were promoted compared catalyst. reaction, ethane was first synthesized through dimerization...

Biogas is a promising renewable energy source; however, it needs to be upgraded increase its low calorific value. In this study, oxidative coupling of methane (OCM) was selected convert higher fuel standard. Prior establishing the scaled-up OCM process, effect organic/inorganic binders on catalytic activity examined. The selection and composition catalyst pellet influenced pore structure, fract...

CH4, C2H6 and C2H4 are the most important outlet gaseous of oxidative couple methane (OCM) reaction and this process is a new technology for conversion of natural gas to ethane and ethylene products. In this study, adsorption of OCM outlet hydrocarbons over 10X zeolite has been examined at equilibrium conditions. Temperature and pressure are the most effective operational parameters in the batc...

Selective coupling of methyl radicals to produce C 2 species (C H 4 and 6 ) is a key challenge for oxidative methane (OCM). In traditional OCM reaction systems, homogeneous transformation in O -containing gases are uncontrollable, resulting limited selectivity yield. Herein, we demonstrate that generated by La 3 at low temperature can selectively couple on the surface 5 wt% Na WO /SiO . The con...

This work presents multi-scale approaches to investigate 3D printed structured Mn–Na–W/SiO2 catalysts used for the oxidative coupling of methane (OCM) reaction. The performance has been compared their conventional analogues, packed beds pellets and powder. physicochemical properties were investigated using scanning electron microscopy, nitrogen adsorption X-ray diffraction (XRD). Performance du...

The oxidative coupling of methane (OCM) to C2 hydrocarbons (C2H4 and C2H6) has aroused worldwide interest over the past decade due rise vast new shale gas resources. However, obtaining higher selectivity can be very challenging in a typical OCM process presence easily oxidized products such as C2H4 C2H6. Regarding this, different types catalysts have been studied achieve desirable yields. In th...

The silver-catalyzed, oxidative coupling of methane to C2 hydrocarbons (OCM) is shown to be an extremely structure-sensitive reaction. Reaction-induced changes in the silver morphology lead to changes in the nature and extent of formation of various bulk and surface -terminating crystal structures. This, in-turn, impacts the adsorption properties and diffusivity of oxygen in silver which is nec...

Oxidative coupling of methane (OCM) is a promising single-step route to convert natural gas high-valued chemicals. It generally agreed that Mn–Na–W catalysts offer balanced conversion–selectivity trade-off. The present work outlines novel SiC–SiO2 support synthesized by spray drying extend the lifetime catalyst. Incorporating SiC into enables exothermic reaction heat be effectively dissipated, ...

Brazil’s large biofuels industry generates significant amounts of effluents, e.g., vinasse from bioethanol, that can effectively be used as substrate for production biogas via Anaerobic Digestion (AD). The Oxidative Coupling Methane (OCM) is the heterogeneous catalytic oxidation methane into ethylene, which a main building block chemical industry. This work investigates potential and competitiv...