Sub-nanometer zeolite 13X-supported Ni-ceria catalysts were synthesized for CO2 methanation. XRD and SEM results show the structure morphology of 13X after impregnation calcination. Ce loading affected catalysts’ metal dispersion, reducibility, basicity acidity, thence their activity selectivity. STEM-EDX elemental mappings showed that Ni are predominantly highly dispersed. has a positive effec...

The impact of different co-catalytically acting promoters (Pt, ZrOx and SmOx) during COx methanation was investigated on alumina supported Co-based model catalysts. To obtain samples with identical structure morphology independent the presence type promoter added, double flame spray pyrolysis employed for synthesis, which, in contrast to classical catalyst preparation techniques, allows control...

Advanced catalytic materials able to catalyse more than one reaction efficiently are needed within the CO2 utilisation schemes benefit from end-products flexibility. In this study, combination of Ni and Ru (15 1 wt%, respectively) was tested in three reactions, i.e. dry reforming methane (DRM), reverse water–gas shift (RWGS) methanation. A stability experiment with cycle methanation-RWGS-DRM ca...

A design of experiments was applied to evaluate different strategies to enhance the methane yield of macroalgae Gracilaria vermiculophylla. Biochemical Methane Potential (BMP) of G. vermiculophylla after physical pre-treatment (washing and maceration) reached 481±9 L CH4 kg(-1) VS, corresponding to a methane yield of 79±2%. No significant effects were achieved in the BMP after thermochemical pr...

The effect of mechanical strain on the binding energy of adsorbates to late transition metals is believed to be entirely controlled by electronic factors, with tensile stress inducing stronger binding. Here we show, via computation, that mechanical strain of late transition metals can modify binding at stepped surfaces opposite to well-established trends on flat surfaces. The mechanism driving ...

Discrimination between electronic and structural effects in metal-support interactions (MSIs) is often hampered by contributions from either one. We report results of a combined experimental/theoretical study that directly demonstrate the action MSIs (EMSIs), while modifications like partial overgrowth metal nanoparticles partly reduced oxide due to SMSI, can be excluded. This demonstrated for ...

Abstract Primarily released by the conversion of primary fossil energy sources, anthropogenic greenhouse gas emissions influence global warming fundamentally. Since they enable increasing share sustainable sources in supply and reducing through targeted integration, power-to-X technologies promise to be an important element compliance with impending regulations laws. VDI 4663 guideline for stra...