Although chemical promotion led to essential improvements in Cu-based catalysts for CO hydrogenation to methanol, surpassing structural limitations such as active phase aggregation under reaction conditions remains challenging. In this report, we improved the textural properties of Cu/InO/CeO and Cu/InO/ZrO catalysts by coating the nanoparticles with a mesoporous SiO shell. This strategy limited particle size up to 3.5 nm, increasing metal dispersion and widening the metal-metal oxide interface region. Chemometric analysis revealed that these structures could maintain high activity and selectivity in a wide range of reaction conditions, with methanol space-time yields up to 4 times higher than those of the uncoated catalysts.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11342343 | PMC |
| http://dx.doi.org/10.1021/acsnanoscienceau.4c00016 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Evaluation of Bioactive Compounds and Chemical Elements in Herbs: Effectiveness of Choline Chloride-Based Deep Eutectic Solvents in Ultrasound-Assisted Extraction.
Molecules
January 2025
Department of Food Plant Chemistry and Processing, Faculty of Food Science, University of Warmia and Mazury in Olsztyn, 10-718 Olsztyn, Poland.
In this study, the effectiveness of three choline chloride (ChCl)-based deep eutectic solvents (DESs) formed using malonic acid (MalA), glycerol (Gly), and glucose (Glu) as hydrogen bond donors and two conventional solvents (50% methanol and 50% ethanol) for ultrasonic-assisted extraction (UAE) of antioxidant compounds from four herbs (chamomile, lemon balm, nettle, and spearmint) were estimated. The antioxidant capacity (AC) of the obtained herb extracts was determined by the modified 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), 2,2-diphenyl-1-picrylhydrazyl (DPPH), and cupric reducing antioxidant capacity (CUPRAC) methods. Profiles of phenolic acids, flavonoid aglycones, and flavonoid glycosides in the green and conventional herb extracts were quantitatively analyzed using ultra-performance liquid chromatography (UPLC).
View Article and Find Full Text PDFQualitative Phytochemical Profiling and In Vitro Antioxidant Potential Evaluation of South African Momordica Balsamina Linn Fruit Pulp.
Life (Basel)
December 2024
Division of Pharmacology, Faculty of Pharmacy, Rhodes University, P.O. Box 94, Grahamstown 6139, South Africa.
Linn is a well-known African traditional herb due to its tremendous medicinal and nutritional properties. It is used worldwide for the treatment of different ailments and diseases. In the present study, the phytochemical and antioxidant activity of South African fruit pulp extracts was evaluated.
View Article and Find Full Text PDFBoosting CO2 Hydrogenation by Synergistic Incorporation of Pure Slica Silicalite-1 Zeolite and CeO2 into Cu Catalysts.
Angew Chem Int Ed Engl
January 2025
Changchun Institute of Applied Chemistry Chinese Academy of Sciences: Chang Chun Institute of Applied Chemistry Chinese Academy of Sciences, State Key Laboratory of Rare Earth Resource Utilization, CHINA.
Chemical conversion of CO2 is providing an opportunity to mitigate the global warming induced by the overconsumption of fossil fuel. Cu has been regarded as one of the most powerful contenders in catalyzing CO2 conversion, yet the precise manipulation of its surface state and the nearby chemical environment continues to pose a formidable challenge. In this work, we report a high-efficiency catalyst by utilizing CeO2 and pure silicon zeolite (S1) to co-activate Cu species.
View Article and Find Full Text PDFUltrathin Palladium-loaded Cuprous oxide stabilises Copper(I) to facilitate electrochemical carbon dioxide reduction reaction.
J Colloid Interface Sci
January 2025
Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea. Electronic address:
Cuprous oxide (CuO) exhibit significant potential for catalytic activity in the electrochemical carbon dioxide reduction reaction (CORR). However, the rapid reduction of Copper(I) (Cu) to metallic Copper (Cu) leads to catalyst deactivation, significantly impacting product selectivity and stability. This study aims to stabilize the Cu valence state at a metal-CuO heterogeneous interface through interfacial engineering, ultimately enhancing the electrochemical CO reduction performance of CuO.
View Article and Find Full Text PDFConfined growth by self-combustion of a Cu-based nanophase into mesostructured acid supports for DME production from CO2.
Chempluschem
January 2025
Universita degli Studi Di Cagliari, Chemical and Geological Science, S.S. 554 bivio per Sestu, 09042, Monserrato, ITALY.
This work deals with the design of nanocomposite hydrogenation-dehydration bifunctional catalysts for the one-pot conversion of CO2 to dimethyl ether (DME), focusing on obtaining a high and homogeneous dispersion of a Cu-based CO2 hydrogenation phase into the pores of mesostructured supports. Particularly, three aluminosilicate mesostructured acid catalysts with catalytic activity towards methanol dehydration and featuring different porous structures (Al-MCM-41, Al-SBA-15, Al-SBA-16) were synthesized and used as supports to host a CuO/ZnO/ZrO2 (CZZ) CO2 hydrogenation catalyst for methanol synthesis. The use of a mesostructured support allows to maximize the exposed surface of the CO2 reduction function by nanostructuring it through its confinement within the mesochannels, thus obtaining nanocomposite bifunctional catalysts with an ultra-small hydrogenation nanophase.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!