CO2 Recycling to Dimethyl Ether: State-of-the-Art and Perspectives

Catizzone, Enrico; Bonura, Giuseppe; Migliori, Massimo; Frusteri, F.; Giordano, G.

doi:10.3390/molecules23010031

Cited by 156 publications

(146 citation statements)

References 173 publications

(202 reference statements)

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“…This peculiar temperature dependence of the formation of methanol and DME is different from that observed with pure copper‐based catalysts, and it is attributed to the influence of the adsorbing support on the multistep reaction mechanism: DME is produced by a condensation reaction of methanol on the acid sites of the zeolite …”

Section: Resultsmentioning

confidence: 56%

“…Methanol (CH 3 OH, MeOH), a potentially renewable fuel, can be produced by the reduction of CO 2 with hydrogen over Cu/ZnO/Al 2 O 3 catalysts . The driving force of the reaction, mainly determined by the low heat of reaction Δ H 0 , is weak

\begin{matrix} left \\ {CO}_{2} + {3 H}_{2} \to {CH}_{3} OH + {normalH}_{2} O \\ Δ H_{0} = - 49 kJ {mol}^{- 1} \end{matrix}

…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, by choosing a zeolite with a large pore diameter (10 Å for 13×), the sorption processes are not suppressed; in zeolites with a much smaller pore size, such as LTA zeolites, large molecules cannot enter or exit. However, compared with methane production by Ni‐based catalysts, the selectivity of the Cu‐based catalyst for methanol production is imperfect; hence, various side products are formed:

\begin{matrix} left \\ {CO}_{2} + {normalH}_{2} \to CO + {normalH}_{2} O \\ Δ H_{0} = + 41 kJ {mol}^{- 1} \end{matrix}

and

\begin{matrix} left \\ {2 CO}_{2} + {6 H}_{2} \to {normalC}_{2} {normalH}_{6} O + {3 H}_{2} O \\ Δ H_{0} = - 122 kJ {mol}^{- 1} \end{matrix}

…”

Section: Introductionmentioning

confidence: 99%

“…Reaction may be interpreted as a subsequent reaction to reaction on the acid sites of the zeolite, i.e., the condensation of methanol to dimethyl ether (C 2 H 6 O, DME) by the removal of water …”

Section: Introductionmentioning

confidence: 99%

“…However, reaction is not necessarily a side reaction, but there is disagreement in the catalysis community about whether it is indeed the first reaction step of the reduction of CO 2 to MeOH, because CO can also be reduced to MeOH according to the following reaction

\begin{matrix} left \\ CO + {2 H}_{2} \to {CH}_{3} OH \\ Δ H_{0} = - 91 kJ {mol}^{- 1} \end{matrix}

…”

Section: Introductionmentioning

confidence: 99%

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Sorption‐Enhanced Methanol Synthesis

et al. 2019

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A small heat of reaction limits the efficiency of the catalytic hydrogenation of CO2 to form methanol; an improved efficiency can be achieved by shifting the thermodynamic equilibrium toward the formation of methanol. The exothermic adsorption of the products in sorption catalysts is shown to increase the reaction yield. The sorption catalysts consist of catalytically active Cu particles incorporated into a zeolite, which is known to strongly absorb water. In addition to high reaction yield of methanol, the sorption catalyst reduces CO2 to CO and dimethyl ether. An enhancement factor of up to 400% for CO and 130% for methanol and dimethyl ether at a relatively low pressure of 15 bar is shown. Furthermore, the following relevant parameters for future technical realization are derived: a high catalytic activity and the reversible adsorption of the products at reaction conditions. A key experiment that combines a catalytic reaction and a pressure swing desorption is presented and demonstrates the feasibility of sorption‐enhanced catalysis for efficient energy use in large‐scale reactors.

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Section: Resultsmentioning

confidence: 56%

\begin{matrix} left \\ {CO}_{2} + {3 H}_{2} \to {CH}_{3} OH + {normalH}_{2} O \\ Δ H_{0} = - 49 kJ {mol}^{- 1} \end{matrix}

…”

Section: Introductionmentioning

confidence: 99%

\begin{matrix} left \\ {CO}_{2} + {normalH}_{2} \to CO + {normalH}_{2} O \\ Δ H_{0} = + 41 kJ {mol}^{- 1} \end{matrix}

and

\begin{matrix} left \\ {2 CO}_{2} + {6 H}_{2} \to {normalC}_{2} {normalH}_{6} O + {3 H}_{2} O \\ Δ H_{0} = - 122 kJ {mol}^{- 1} \end{matrix}

…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

\begin{matrix} left \\ CO + {2 H}_{2} \to {CH}_{3} OH \\ Δ H_{0} = - 91 kJ {mol}^{- 1} \end{matrix}

…”

Section: Introductionmentioning

confidence: 99%

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Sorption‐Enhanced Methanol Synthesis

et al. 2019

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Copper Modulated Lead‐Free Cs₄MnSb₂Cl₁₂ Double Perovskite Microcrystals for Photocatalytic Reduction of CO₂

Gao,

Tian,

Guo

et al. 2023

Advanced Science

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In order to deal with the global energy crisis and environmental problems, reducing carbon dioxide through artificial photosynthesis has become a hot topic. Lead halide perovskite is attracted people's attention because of its excellent photoelectric properties, but the toxicity and long‐term instability prompt people to search for new photocatalysts. Herein, a series of <111> inorganic double perovskites Cs4Mn1‐xCuxSb2Cl12 microcrystals (x = 0, 0.1, 0.2, 0.3, 0.4, and 0.5) are synthesized and characterized. Among them, Cs4Mn0.7Cu0.3Sb2Cl12 microcrystals have the best photocatalytic performance, and the yields of CO and CH4 are 503.86 and 68.35 µmol g−1, respectively, after 3 h irradiation, which are the highest among pure phase perovskites reported so far. In addition, in situ Fourier transform infrared (FT‐IR) spectroscopy and electron spin resonance (ESR) spectroscopy are used to explore the mechanism of the photocatalytic reaction. The results highlight the potential of this class of materials for photocatalytic reduction reactions.

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Roles of interaction between components in CZZA/HZSM‐5 catalyst for dimethyl ether synthesis via CO₂ hydrogenation

et al. 2021

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The roles of interaction between two catalyst components in CuO–ZnO–ZrO2–Al2O3 (CZZA)/HZSM‐5 bifunctional catalyst for dimethyl ether (DME) synthesis via carbon dioxide hydrogenation were investigated. It was found that CZZA catalyst showed excellent stability during methanol (MeOH) synthesis for 100 h, while there was a severe loss of catalytic activity in the bifunctional catalyst for DME synthesis. Hence, the effects of different degrees of intimacy of two catalyst components were studied for DME synthesis, including mixed and separated modes. For the mixed mode, the particle size of catalysts and the amount of reaction intermediates were proven to influence the catalyst deactivation. For the separated mode, the catalysts showed rapid deactivation within a short time. Various characterizations indicated that the remarkable deactivation of separated mode was mainly caused by the decrease of copper active centers (e.g., sintering and oxidation) and blockage of acid sites via increased coke deposition on HZSM‐5.

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CO2 Recycling to Dimethyl Ether: State-of-the-Art and Perspectives

Cited by 156 publications

References 173 publications

Sorption‐Enhanced Methanol Synthesis

Sorption‐Enhanced Methanol Synthesis

Copper Modulated Lead‐Free Cs₄MnSb₂Cl₁₂ Double Perovskite Microcrystals for Photocatalytic Reduction of CO₂

Roles of interaction between components in CZZA/HZSM‐5 catalyst for dimethyl ether synthesis via CO₂ hydrogenation

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CO2 Recycling to Dimethyl Ether: State-of-the-Art and Perspectives

Cited by 156 publications

References 173 publications

Sorption‐Enhanced Methanol Synthesis

Sorption‐Enhanced Methanol Synthesis

Copper Modulated Lead‐Free Cs4MnSb2Cl12 Double Perovskite Microcrystals for Photocatalytic Reduction of CO2

Roles of interaction between components in CZZA/HZSM‐5 catalyst for dimethyl ether synthesis via CO2 hydrogenation

Contact Info

Product

Resources

About

Copper Modulated Lead‐Free Cs₄MnSb₂Cl₁₂ Double Perovskite Microcrystals for Photocatalytic Reduction of CO₂

Roles of interaction between components in CZZA/HZSM‐5 catalyst for dimethyl ether synthesis via CO₂ hydrogenation