Mechanism and catalytic performance for direct dimethyl ether synthesis by CO2 hydrogenation over CuZnZr/ferrierite hybrid catalyst

Sheng, Qingtao; Ye, Runping; Gong, Weibo; Shi, Xiufeng; Xu, Bang; Argyle, Morris D.; Adidharma, Hertanto; Fan, Maohong

doi:10.1016/j.jes.2020.02.015

Cited by 40 publications

(20 citation statements)

References 57 publications

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“…108 The hydrogenation of CO 2 to DME has attracted great interest with several heterogeneous catalysts. 74,75,77,78,109–112 Direct CO 2 hydrogenation to DME is shown below:CO 2 + 6H 2 ⇌ CH 3 OCH 3 + 3H 2 OΔ H = −122.2 kJ mol −1 Cu–ZnO–Al 2 O 3 catalysts and a mesoporous HZSM-5 zeolite are used in DME synthesis, providing great resistance and improving the mass transfer process during the reactions. 113 Alvarez et al 114 reported that direct CO 2 hydrogenation to DME requires a bifunctional catalyst in order to perform methanol synthesis and methanol dehydration.…”

Section: Co2 Hydrogenation To Value Added Chemicals Synthesis Routesmentioning

confidence: 99%

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Hydrogenation of carbon dioxide (CO₂) to fuels in microreactors: a review of set-ups and value-added chemicals production

et al. 2022

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Section: Co2 Hydrogenation To Value Added Chemicals Synthesis Routesmentioning

confidence: 99%

“…108 The hydrogenation of CO 2 to DME has attracted great interest with several heterogeneous catalysts. 74,75,77,78,[109][110][111][112] Direct CO 2 hydrogenation to DME is shown below:…”

Section: Co 2 To Ethanolmentioning

confidence: 99%

Hydrogenation of carbon dioxide (CO₂) to fuels in microreactors: a review of set-ups and value-added chemicals production

et al. 2022

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“…On the other hand, methanol dehydration reaction takes place rapidly over a solid acid component. Thus, due to the high activity and easy preparation of the Cu-ZnO-based systems, bifunctional catalysts for directly converting CO 2 into DME can be obtained by combining such redox systems with solid acid catalysts [14], among which H-ZSM-5 [8,[15][16][17][18][19][20][21][22], ferrierite [17,19,20,23,24], mordenite [17,19,20], and γ-Al 2 O 3 [25,26].…”

Section: Introductionmentioning

confidence: 99%

Ex-LDH-Based Catalysts for CO2 Conversion to Methanol and Dimethyl Ether

Mureddu¹,

Lai²,

Atzori

et al. 2021

Catalysts

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CO2-derived methanol and dimethyl ether can play a very important role as fuels, energy carriers, and bulk chemicals. Methanol production from CO2 and renewable hydrogen is considered to be one of the most promising pathways to alleviate global warming. In turn, methanol could be subsequently dehydrated into DME; alternatively, one-step CO2 conversion to DME can be obtained by hydrogenation on bifunctional catalysts. In this light, four oxide catalysts with the same Cu and Zn content (Cu/Zn molar ratio = 2) were synthesized by calcining the corresponding CuZnAl LDH systems modified with Zr and/or Ce. The fresh ex-LDH catalysts were characterized in terms of composition, texture, structure, surface acidity and basicity, and reducibility. Structural and acid–base properties were also studied on H2-treated samples, on which specific metal surface area and dispersion of metallic Cu were determined as well. After in situ H2 treatment, the ex-LDH systems were tested as catalysts for the hydrogenation of CO2 to methanol at 250 °C and 3.0 MPa. In the same experimental conditions, CO2 conversion into dimethyl ether was studied on bifunctional catalysts obtained by physically mixing the exLDH hydrogenation catalysts with acid ferrierite or ZSM-5 zeolites. For both processes, the effect of the Al/Zr/Ce ratio on the products distribution was investigated.

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“…For the dehydration reaction of oxygenates on the acidic sites, zeolites such as beta, ZSM-5, and ferrierite (FER) have been largely applied to prepare hybridized bifunctional catalysts for the one-step DME synthesis from syngas, and various FERs have also been introduced as solid acidic components to prepare efficient bifunctional Cu–ZnO–Al 2 O 3 (CZA)/FER catalysts. ,− In the present study, different morphologies of home-made FERs were applied to prepare the bifunctional CZA/FER catalysts by a coprecipitation method of CZA components on the FERs. The novel nanosheet FER having a mesoporous needle-like morphology was compared with presynthesized mesoporous and plate-like morphology of FERs to verify the roles of the different structures to catalytic activity and stability in terms of the interactions of Cu-incorporated ZnO nanoparticles and hydrophobicity of the bifunctional CZA/FER catalysts.…”

Section: Introductionmentioning

confidence: 99%

Morphology Effects of Ferrierite on Bifunctional Cu–ZnO–Al₂O₃/Ferrierite for Direct Syngas Conversion to Dimethyl Ether

et al. 2021

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Different roles of the solid-acid ferrierite zeolite (FER) morphology on the bifunctional Cu–ZnO–Al2O3(CZA)-incorporated FER were investigated for the one-step conversion of syngas to dimethyl ether by using three different FERs such as needle-like nanosheet, post-treated mesoporous, and commercial plate-like FERs having a similar Si/Al molar ratio of ∼10. The coprecipitated CZA nanoparticles on these FERs revealed significantly different catalytic activities and stabilities due to different dispersions of Cu nanoparticles with oxidation states as well as hydrophobicity of the FERs. Among them, the needle-like nanosheet FER incorporated with CZA (CZA/NSFER) showed the highest dispersion of Cu nanoparticles with homogeneous size distributions resulted in showing its higher thermal stability with less aggregations. The higher surface hydrophobicity was mainly responsible for the highly dispersed Cu-incorporated ZnO nanoparticles with less formation of CuAl2O4 phases on the CZA/NSFER by showing an enhanced catalytic activity and stability. The CZA/NSFER having a larger surface area of 142 m2/g showed more hydrophobic properties by showing much easier mass-transfer natures on the nanosheet FER surfaces. The superior catalytic activity on the CZA/NSFER with a reasonable activation energy of 62.6 kJ/mol was also attributed to the well-dispersed Cu crystallites on more hydrophobic Cu–ZnO–Al2O3 matrices on the mesoporous nanosheet NSFER surfaces.

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Mechanism and catalytic performance for direct dimethyl ether synthesis by CO2 hydrogenation over CuZnZr/ferrierite hybrid catalyst

Cited by 40 publications

References 57 publications

Hydrogenation of carbon dioxide (CO₂) to fuels in microreactors: a review of set-ups and value-added chemicals production

Hydrogenation of carbon dioxide (CO₂) to fuels in microreactors: a review of set-ups and value-added chemicals production

Ex-LDH-Based Catalysts for CO2 Conversion to Methanol and Dimethyl Ether

Morphology Effects of Ferrierite on Bifunctional Cu–ZnO–Al₂O₃/Ferrierite for Direct Syngas Conversion to Dimethyl Ether

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Mechanism and catalytic performance for direct dimethyl ether synthesis by CO2 hydrogenation over CuZnZr/ferrierite hybrid catalyst

Cited by 40 publications

References 57 publications

Hydrogenation of carbon dioxide (CO2) to fuels in microreactors: a review of set-ups and value-added chemicals production

Hydrogenation of carbon dioxide (CO2) to fuels in microreactors: a review of set-ups and value-added chemicals production

Ex-LDH-Based Catalysts for CO2 Conversion to Methanol and Dimethyl Ether

Morphology Effects of Ferrierite on Bifunctional Cu–ZnO–Al2O3/Ferrierite for Direct Syngas Conversion to Dimethyl Ether

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Hydrogenation of carbon dioxide (CO₂) to fuels in microreactors: a review of set-ups and value-added chemicals production

Hydrogenation of carbon dioxide (CO₂) to fuels in microreactors: a review of set-ups and value-added chemicals production

Morphology Effects of Ferrierite on Bifunctional Cu–ZnO–Al₂O₃/Ferrierite for Direct Syngas Conversion to Dimethyl Ether