Ethylene production via oxidative coupling of methane (OCM) in adiabatic packed-bed reactors is a promising route within the context natural gas valorization. However, high exothermicity OCM imposes low inlet temperatures and, hence, space-time yields. Layered-bed are proposed present work as potential alternative to mitigate this issue. In modeling investigation, first layer active Sr/La2O3 ca...

We examined oxidative coupling of methane (OCM) over various Ce-W-O catalysts at 423 K in an electric field. Ce2(WO4)3/CeO2 catalyst showed high OCM activity. In a periodic operation test over Ce2(WO4)3/CeO2 catalyst, C2 selectivity exceeded 60% during three redox cycles. However, Ce2(WO4)3/CeO2 catalyst without the electric field showed low activity, even at 1073 K: CH4 Conv., 6.0%; C2 Sel., 2...

The very large reserves of methane, which often are found in remote regions, could serve as a feedstock for the production of chemicals and as a source of energy well into the 21st century. Although methane currently is being used in such important applications as the heating of homes and the generation of hydrogen for ammonia synthesis, its potential for the production of ethylene or liquid hy...

This paper presents a comprehensive computational fluid dynamics (CFD) model for describing the oxidative coupling of methane (OCM) carried out in fixed-bed reactors olefin production. Initially, single pellet was developed and implemented to describe heat mass transfer within between gaseous solid phases. Subsequently, sensitivity analyses were performed assess impact arrangement feed conditio...

Methane is abundant and relatively inexpensive, making it an attractive feedstock for producing bulk chemicals. However, the low reactivity of methane makes it difficult to develop commercially viable processes for methane conversion. Because of favorable thermodynamics, many authors have investigated the oxidation and oxidative carbonylation of methane. By contrast, the sulfonation of methane ...