Deciphering Mn modulated structure-activity interplay and rational statistical analysis for CO2 rich syngas hydrogenation to clean methanol

Tripathi, Komal; Gupta, Vrinda; Pant, Kamal K.; Upadhyayula, Sreedevi

doi:10.1016/j.jclepro.2022.130794

Cited by 3 publications

(1 citation statement)

References 55 publications

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“…This is because CO 2 hydrogenation (ΔH = À49 kJ/mol) is comparatively less exothermic than CO hydrogenation (ΔH = À91 kJ/ mol). [20] Additionally, the endothermic rWGS reaction (reaction (3)), has a greater impact on a CO 2 rich feed which further contributes to the falling outlet temperature. Since DME and methanol synthesis involves exothermic reactions (reactions (1) and ( 2)), so low outlet temperature values indicate favourable conditions for achieving higher yield.…”

Section: Sensitivity Analysis Of Vital Thermodynamic Parameters For D...mentioning

confidence: 99%

Design framework for dimethyl ether (DME) production from coal and biomass‐derived syngas via simulation approach

et al. 2023

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A comprehensive thermodynamic study was conducted to evaluate the comparative efficacy of methanol and dimethyl ether (DME) synthesis using CO 2 rich syngas feed. The first part of our study included assessing the relative performances of the methanol synthesis system, two step DME synthesis system, and one step DME synthesis system in terms of the CO x conversion and product yield (methanol/ DME) based on the Gibbs free energy minimization approach. The wide range of composition of CO 2 -enriched syngas feed produced by the coal and biomass gasification was simulated using Aspen Plus and the following evaluation parameters were analyzed for a broad parameter range: reaction temperature (180-280 C), reaction pressure (10-80 bar), stoichiometry number (SN) (0-11), and CO 2 / (CO 2 + CO) molar feed ratio (0-1) for isothermal as well as adiabatic conditions. Based on the equilibrium yield, one-step DME synthesis was discovered as the most viable process to utilize the co-gasification derived syngas effectively. In the second part of our study, the overall process efficiency was inspected through the process design of 1 tonnes per day (TPD) DME plant inclusive of heat integration, resulting in significant CO 2 abatement and DME production with high product purity and minimum energy consumption. Consequently, one-step DME production via CO 2enriched syngas obtained through the coal or biomass gasification process is identified as the leading technology based on energy utilization and CO 2 abatement. K E Y W O R D SCO 2 rich syngas, dimethyl ether, methanol, plant design, thermodynamics

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Section: Sensitivity Analysis Of Vital Thermodynamic Parameters For D...mentioning

confidence: 99%

Design framework for dimethyl ether (DME) production from coal and biomass‐derived syngas via simulation approach

et al. 2023

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CO2 methanation over open cell foams prepared via chemical conversion coating

Renda,

Martino,

Palma

2024

Journal of Cleaner Production

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Effects of Promoter’s Composition on the Physicochemical Properties of Cu/ZnO/Al2O3-ZrO2 Catalyst

et al. 2022

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Cu/ZnO catalysts were synthesized via an impregnation method on an Al2O3-ZrO2 support and modified by the addition of manganese and niobium as promoters. The effect of the selected promoters on the physicochemical properties and performance toward the hydrogenation of CO2 to methanol are presented in this paper. The Mn and Nb promoters improved the reducibility of the catalyst as evidenced by the shifting of the H2-TPR peaks from 315 °C for the un-promoted catalyst to 284 °C for the Mn- and Nb-promoted catalyst. The catalytic performance in a CO2 hydrogenation reaction was evaluated in a fixed-bed reactor system at 22.5 bar and 250 °C for 5 h. Amongst the catalysts investigated, the catalyst with equal ratio of Mn and Nb promoters exhibited the smallest particle size of 6.7 nm and highest amount of medium-strength basic sites (87 µmol/g), which resulted in the highest CO2 conversion (15.9%) and methanol selectivity (68.8%).

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Deciphering Mn modulated structure-activity interplay and rational statistical analysis for CO2 rich syngas hydrogenation to clean methanol

Cited by 3 publications

References 55 publications

Design framework for dimethyl ether (DME) production from coal and biomass‐derived syngas via simulation approach

Design framework for dimethyl ether (DME) production from coal and biomass‐derived syngas via simulation approach

CO2 methanation over open cell foams prepared via chemical conversion coating

Effects of Promoter’s Composition on the Physicochemical Properties of Cu/ZnO/Al2O3-ZrO2 Catalyst

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