In this article, the effect of operating conditions, such as temperature, Gas Hourly Space Velocity (GHSV), CH4/O2 ratio and diluents gas (mol% N2) on ethylene production by Oxidative Coupling of Methane (OCM) in a fixed bed reactor at atmospheric pressure was studied over Mn/Na2WO4/SiO2 ca...

The performance of the Mn-Na2WO4/SiO2 catalyst for oxidative coupling methane (OCM) has been ascribed to crystalline phases that are not present at reaction temperatures (>700 °C). evolution W and Mn sites structure was monitored via in situ TPO-XRD, -Raman, -XANES spectroscopies. TPO-XRD shows identified on Mn-Na2WO4/SiO2, Na2WO4/SiO2, WO3/SiO2 catalysts room temperature do exist relevant OCM ...

In this work, Ho2O3 nanosheets were synthesized by a hydrothermal method. A series of Sr-modified (Sr-Ho2O3-NS) with Sr/Ho molar ratio between 0.02 and 0.06 prepared via an impregnation These catalysts characterized several techniques such as XRD, N2 adsorption, SEM, TEM, XPS, O2-TPD (temperature-programmed desorption), CO2-TPD, they studied respect to their performances in the oxidative coupli...

Oxidative coupling of methane (OCM) is an approach for the direct catalytic conversion of methane to higher hydrocarbons, which is currently being investigated at the Berlin Institute of Technology within the cluster of excellence UniCat (Unifying Concepts of Catalysis). Hereby, the conversion to ethylene is the major goal of the process. In the downstreaming process subsequent to the OCM react...

We have constructed and analyzed an updated dataset consisting of 4759 experimental datapoints for the oxidative coupling methane (OCM) reaction based on literature data reported before 2020 (?2019) using machine learning (ML) methods. Several ML methods, including random forest regression (RFR), extra trees (ETR), gradient boosting with XGBoost (XGB), were used in conjunction our proposed appr...

A plasma–catalyst hybrid system has been developed for the direct conversion of methane to C2+ hydrocarbons in dielectric barrier discharge (DBD) plasma. TiO2 presented highest yield 11.63% among different materials when integrated with DBD plasma, which made us concentrate on TiO2-based catalyst. It was demonstrated that MnTi catalyst showed best coupling performance 27.29% 150 V applied volta...

Oxidative coupling of methane and dehydroaromatization are attractive one-step conversion routes to make valuable platform chemicals more sustainable. Both processes require elevated temperatures above 600°C, good heat management, the use heterogeneous catalysts. None these reactions yet commercial due many technical challenges. This work explores potential combining two under one umbrella over...

The synthesis of selected state-of-the-art catalysts providing high performances in the oxidative coupling of methane (OCM) with O2 was reproduced according to the respective methods reported in literature. A reference material with identical stochiometric composition was further synthesized by applying the cellulose templating (CT) method. This method increases the surface area and affects the...