Direct conversion of CO2 to dimethyl ether in a fixed bed membrane reactor: Influence of membrane properties and process conditions

Poto, Serena; Gallucci, Fausto; d’Angelo, M.F. Neira

doi:10.1016/j.fuel.2021.121080

Cited by 35 publications

(41 citation statements)

References 95 publications

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“…In any case, these similarities supported the assumption that water was mainly released by DME and coke production. On the other hand, methane release seems to be associated with the formation of CH2O(ads) intermediate by Equation (5). This CH2O(ads), subsequently, evolves to CO On the other hand, methane release seems to be associated with the formation of CH 2 O(ads) intermediate by Equation (5).…”

Section: Stoichiometric Study Of Mtd Reactionmentioning

confidence: 97%

“…On the other hand, methane release seems to be associated with the formation of CH2O(ads) intermediate by Equation (5). This CH2O(ads), subsequently, evolves to CO On the other hand, methane release seems to be associated with the formation of CH 2 O(ads) intermediate by Equation (5). This CH 2 O(ads), subsequently, evolves to CO (Equation ( 6)) or coke (Equation ( 7)).…”

Section: Stoichiometric Study Of Mtd Reactionmentioning

confidence: 99%

“…DME can be used as liquified petroleum gas-blending, aerosol propellant and low-soot emission diesel substitute [3][4][5]. In addition, DME is an interesting hydrogen vector [6].…”

Section: Introductionmentioning

confidence: 99%

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A Kinetic Model Considering Catalyst Deactivation for Methanol-to-Dimethyl Ether on a Biomass-Derived Zr/P-Carbon Catalyst

et al. 2022

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A Zr-loaded P-containing biomass-derived activated carbon (ACPZr) has been tested for methanol dehydration between 450 and 550 °C. At earlier stages, methanol conversion was complete, and the reaction product was mainly dimethyl ether (DME), although coke, methane, hydrogen and CO were also observed to a lesser extent. The catalyst was slowly deactivated with time-on-stream (TOS), but maintained a high selectivity to DME (>80%), with a higher yield to this product than 20% for more than 24 h at 500 °C. A kinetic model was developed for methanol dehydration reaction, which included the effect of the inhibition of water and the deactivation of the catalyst by coke. The study of stoichiometric rates pointed out that coke could be produced through a formaldehyde intermediate, which might, alternatively, decompose into CO and H2. On the other hand, the presence of 10% water in the feed did not affect the rate of coke formation, but produced a reduction of 50% in the DME yield, suggesting a reversible competitive adsorption of water. A Langmuir–Hinshelwood reaction mechanism was used to develop a kinetic model that considered the deactivation of the catalyst. Activation energy values of 65 and 51 kJ/mol were obtained for DME and methane production in the temperature range from 450 °C to 550 °C. On the other hand, coke formation as a function of time on stream (TOS) was also modelled and used as the input for the deactivation function of the model, which allowed for the successful prediction of the DME, CH4 and CO yields in the whole evaluated TOS interval.

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Section: Stoichiometric Study Of Mtd Reactionmentioning

confidence: 97%

Section: Stoichiometric Study Of Mtd Reactionmentioning

confidence: 99%

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A Kinetic Model Considering Catalyst Deactivation for Methanol-to-Dimethyl Ether on a Biomass-Derived Zr/P-Carbon Catalyst

et al. 2022

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“…Manufacturing cost of catalytic membrane preparation and modules, limited membrane life time, anomalous nature of chemical reaction processes in some cases as well as the complexity of the process should also be taken into account in development of such processes. Therefore, attention has been directed towards modeling and simulation of processes, to compensate for the low permeability of highly selective (dense) membranes at medium temperatures ( Poto et al, 2021 ). Table 2 compares different processes in terms of their functionality, merits and demerits.…”

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Chemosphere

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“…An increase of CO 2 conversion at higher ζ CZZ values should be possible by in situ water removal, e.g. with a membrane reactor system 50,51 or by doping the CZZ catalyst aiming at stronger binding of formate to the Cu sites, which could inhibit the rWGS reaction and thus accelerate CO 2 hydrogenation on the Cu/Zn sites. 36 MeOH and DME selectivity vs. CZZ/FER variation In Fig.…”

Section: Reaction Chemistry and Engineering Papermentioning

confidence: 99%

Experimental investigations and model-based optimization of CZZ/H-FER 20 bed compositions for the direct synthesis of DME from CO₂-rich syngas

et al. 2022

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Direct conversion of CO2 to dimethyl ether in a fixed bed membrane reactor: Influence of membrane properties and process conditions

Cited by 35 publications

References 95 publications

A Kinetic Model Considering Catalyst Deactivation for Methanol-to-Dimethyl Ether on a Biomass-Derived Zr/P-Carbon Catalyst

A Kinetic Model Considering Catalyst Deactivation for Methanol-to-Dimethyl Ether on a Biomass-Derived Zr/P-Carbon Catalyst

Recent advances in aqueous virus removal technologies

Experimental investigations and model-based optimization of CZZ/H-FER 20 bed compositions for the direct synthesis of DME from CO₂-rich syngas

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Direct conversion of CO2 to dimethyl ether in a fixed bed membrane reactor: Influence of membrane properties and process conditions

Cited by 35 publications

References 95 publications

A Kinetic Model Considering Catalyst Deactivation for Methanol-to-Dimethyl Ether on a Biomass-Derived Zr/P-Carbon Catalyst

A Kinetic Model Considering Catalyst Deactivation for Methanol-to-Dimethyl Ether on a Biomass-Derived Zr/P-Carbon Catalyst

Recent advances in aqueous virus removal technologies

Experimental investigations and model-based optimization of CZZ/H-FER 20 bed compositions for the direct synthesis of DME from CO2-rich syngas

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Product

Resources

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Experimental investigations and model-based optimization of CZZ/H-FER 20 bed compositions for the direct synthesis of DME from CO₂-rich syngas