Inside the reaction mechanism of direct CO2 conversion to DME over zeolite-based hybrid catalysts

Bonura, Giuseppe; Todaro, S.; Frusteri, Leone; Majchrzak‐Kucęba, Izabela; Wawrzyńczak, Dariusz; Pászti, Zoltán; Tálas, Emı́lia; Tompos, András; Ferenc, L.; Solt, Hanna E.; Cannilla, C.; Frusteri, F.

doi:10.1016/j.apcatb.2021.120255

Cited by 42 publications

(22 citation statements)

References 70 publications

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“…The hybrid configuration on the catalyst level is of paramount important due to the fact that the intimate contact between the methanol synthesis and methanol dehydration active sites can be tailored. However, a possible disadvantage is that hybrid catalysts can suffer from deactivation under reaction conditions due to the proximity of the methanol forming catalyst to the acidic sites of the dehydration catalyst [192,194,195] like the migration of Si to a CZA catalyst [194], the pore blockage caused by carbonaceous species deposition [196][197][198] or the sintering of Cu nanoclusters due to contact with aluminosilicates [196,199]. Migliori et al, [200] investigated the role of metal-acid interaction in methanol dehydration over hybrid Cu/ZnO/ZrO 2 -zeolite (FER and MFI) catalysts.…”

Section: Synthesis Methods and Performance Of Advanced Bifunctional C...mentioning

confidence: 99%

Recent Progress in Direct DME Synthesis and Potential of Bifunctional Catalysts

Banivaheb

Pitter

Delgado

et al. 2022

Chemie Ingenieur Technik

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Dedicated to Prof. Dr. Thomas Hirth on the occasion of his 60th birthday PtX technologies are one major building block of the future energy system based on renewables sources. Dimethyl ether (DME) is an important PtX product that can be used as intermediate the production of CO 2 -neutral base chemicals. New applications lead to an increase of the global production and the optimization of the process efficiency, especially when considering decentralized synthesis. This review article puts some spotlights on recent developments in methanol and the direct DME synthesis with a special focus on the modeling and bifunctional catalyst. This study is expected to provide a foundation for future works in the field of catalysis research based on catalysts design and kinetic modeling.

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Section: Synthesis Methods and Performance Of Advanced Bifunctional C...mentioning

confidence: 99%

Recent Progress in Direct DME Synthesis and Potential of Bifunctional Catalysts

Banivaheb

Pitter

Delgado

et al. 2022

Chemie Ingenieur Technik

View full text Add to dashboard Cite

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“…were prepared at a concentration of 0.003 M and used throughout the experiment. The pH effect of the different test analytes with different dye solutions was analyzed in acidic (2,4,6), neutral, and basic (9,12) solutions. Each dye solution (10 mL) was treated with 1 mL of 0.5 ppm test solution (ethanol/formic acid/methanol) separately in the adjusted pH.…”

Section: Dye Preparation and Analysismentioning

confidence: 99%

“…Chemically and thermodynamically, CO 2 is a very stable molecule. Consequently, CO 2 conversion reactions are endothermic and require efficient catalysts to achieve high yields [12]. Various strategies have been used to convert CO 2 , including thermal catalysis, photocatalysis, electrocatalysis, photoelectrochemical reactions, thermocatalysis, radiolysis, and geological storage [13].…”

Section: Introductionmentioning

confidence: 99%

A Smart Colorimetric Platform for Detection of Methanol, Ethanol and Formic Acid

Sha

Maurya

Geetha

et al. 2022

Sensors

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Carbon dioxide (CO2) is a greenhouse gas in the atmosphere and scientists are working on converting it to useful products, thereby reducing its quantity in the atmosphere. For converting CO2, different approaches are used, and among them, electrochemistry is found to be the most common and more efficient technique. Current methods for detecting the products of electrochemical CO2 conversion are time-consuming and complex. To combat this, a simple, cost-effective colorimetric method has been developed to detect methanol, ethanol, and formic acid, which are formed electrochemically from CO2. In the present work, the highly efficient sensitive dyes were successfully established to detect these three compounds under optimized conditions. These dyes demonstrated excellent selectivity and showed no cross-reaction with other products generated in the CO2 conversion system. In the analysis using these three compounds, this strategy shows good specificity and limit of detection (LOD, ~0.03–0.06 ppm). A cost-effective and sensitive Internet of Things (IoT) colorimetric sensor prototype was developed to implement these dyes systems for practical and real-time application. Employing the dyes as sensing elements, the prototype exhibits unique red, green, and blue (RGB) values upon exposure to test solutions with a short response time of 2 s. Detection of these compounds via this new approach has been proven effective by comparing them with nuclear magnetic resonance (NMR). This novel approach can replace heavy-duty instruments such as high-pressure liquid chromatography (HPLC), gas chromatography (G.C.), and NMR due to its extraordinary selectivity and rapidity.

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“…1 It is closely related to the reaction mechanisms and chemical thermodynamics, especially the catalyst state during the reaction. [2][3][4][5][6] For example, homogeneous metal catalyst states can be distinctly different in their coordination geometry and valence, which might result in a remarkable variation in reaction catalytic efficiency. [7][8][9][10] As for heterogeneous supported metal catalysts, the specific microenvironment of catalytic sites, which is largely modulated by the support, leads to a more complex catalyst state.…”

Section: Introductionmentioning

confidence: 99%