This work addresses the stability of different Ru-based dual function materials (DFM, x% Ru, 6.1% “Na2O”/Al2O3) during cycles of CO2 capture from simulated power plant effluent (320 °C; 7.5% CO2, 15% steam, 4.5% O2, balance N2 (v/v)) and subsequent catalytic methanation. Aging studies are carried out to simulate natural gas combustion flue gas on DFM granules, tablets, and ring tablets prepared by sequentially impregnating Ru and Na2O. Stability increases with Ru loading; however, 0.5% Ru DFMs demonstrate a small but steady loss of CH4 produced per cycle consistent with deactivation of the Ru component likely due to exposure to high levels of O2 and steam in the flue gas. CO chemisorption, in-situ FT-IR, and transient microreactor studies all verify that there is loss in Ru active surface area, possibly due to sintering, which consequently results in lower methanating ability. 

Aging study of low Ru loading dual function materials (DFM) for combined power plant effluent CO2 capture and methanation

/pdf/boosting-the-performance-of-ni-al-sub-2-sub-o-sub-3-sub-for-39kx5q3o.pdf

Boosting the performance of Ni/Al<sub>2</sub>O<sub>3</sub> for the reverse water gas shift reaction through formation of CuNi nanoalloys

Boosting the performance of Ni/Al2O3 for the Reverse Water Gas Shift reaction through formation of CuNi nanoalloys

This review presents the numerical algorithms and speed-up strategies developed to couple continuum macroscopic simulations and detailed microkinetic models in the context of multiscale approaches to chemical reactions engineering. CFD simulations and hierarchical approaches are discussed both for fixed and fluidized systems. The foundations of the methodologies are reviewed together with specific examples to show the applicability of the methods. These concepts play a pivotal role to enable the first-principles multiscale approach to systems of technological relevance. 

https://zenodo.org/record/7144344/files/Manuscript_Computational_Fluid_Dynamics_of_Reacting_Flows_at_Surfaces_Methodologies_and_Applications.pdf

Computational Fluid Dynamics of Reacting Flows at Surfaces: Methodologies and Applications

Tailoring the synergistic dual-decoration of (Cu–Co) transition metal auxiliaries in Fe-oxide/zeolite composite catalyst for the direct conversion of syngas to aromatics

https://pubs.rsc.org/en/content/articlepdf/2021/cy/d1cy00922b

Md. Imteyaz Alam

Papers

Mechanistic and multiscale aspects of thermo-catalytic CO2 conversion to C1 products.