Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Carbenes are critical intermediates in organic chemistry, recognized for their exceptional reactivity and versatility. However, conventional methods for carbene generation are often associated with safety risks and hazardous procedures. This study presents a Ga-ZnO nanosheets photocatalyst with a (100) preferred orientation, featuring abundant refined frustrated Lewis pair (FLP) sites, excellent light absorption, and efficient charge transport properties. Under visible light irradiation, this catalyst activates methanol to generate a methyl carbene (methylene) intermediate, which subsequently reacts with another methanol molecule to produce ethanol. In situ experiments and theoretical calculations reveal that FLP sites, composed of oxygen vacancies and Ga, respectively activate C-H and C-O bonds while efficiently capturing photogenerated electrons and holes, making the most significant contribution to the formation of carbene intermediates. This research not only offers an eco-friendly route for methanol-to-ethanol conversion but also establishes a safer and more efficient method for methyl carbene production under mild conditions.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/jacs.4c17227 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Bridging the molecular mechanism and industrial process of zeolite-catalyzed methanol conversion to olefins and ethanol using advanced solid-state NMR spectroscopy.
Chem Soc Rev
July 2025
National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
Zeolite-catalyzed methanol-to-olefin (MTO) and methanol-to-ethanol (MTE) reactions have achieved significant breakthroughs in both industry and academia, proving to be mature alternative pathways for producing basic chemicals from non-oil resources. The successful transition of these catalytic processes from laboratory to industrial implementation has been propelled by fundamental breakthroughs in the comprehensive understanding of reaction mechanisms. In this context, solid-state nuclear magnetic resonance (ssNMR) spectroscopy has emerged as an indispensable tool for elucidating catalyst structures, catalytic reaction mechanisms, and the interactions and dynamics of reactant molecules in these industrially important processes.
View Article and Find Full Text PDFVisible-Light-Driven Methanol-To-Ethanol Conversion via Carbene Pathway by Frustrated Lewis Pairs.
J Am Chem Soc
March 2025
Department of Chemistry, and FQRNT Center for Green Chemistry and Catalysis, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada.
Carbenes are critical intermediates in organic chemistry, recognized for their exceptional reactivity and versatility. However, conventional methods for carbene generation are often associated with safety risks and hazardous procedures. This study presents a Ga-ZnO nanosheets photocatalyst with a (100) preferred orientation, featuring abundant refined frustrated Lewis pair (FLP) sites, excellent light absorption, and efficient charge transport properties.
View Article and Find Full Text PDFInvestigation of optimal operating conditions in dimethyl ether carbonylation to methyl acetate production process.
Environ Sci Pollut Res Int
October 2023
Faculty of Chemical Engineering, Urmia University of Technology, P.O. Box 57166-17165, Urmia, Iran.
Ethanol production methods are expanding due to the importance of ethanol as a fuel or additive to fuels. One of these methods is converting methanol to ethanol in a three-step process. All of these steps need to deeply study and investigate to develop the process.
View Article and Find Full Text PDFImproved biodiesel production from waste cooking oil with mixed methanol-ethanol using enhanced eggshell-derived CaO nano-catalyst.
Sci Rep
March 2021
Center for Environmental Science, College of Natural and Computational Sciences, Addis Ababa University, P. O. Box 1176, Addis Ababa, Ethiopia.
In this report, the utilization of mixed methanol-ethanol system for the production of biodiesel from waste cooking oil (WCO) using enhanced eggshell-derived calcium oxide (CaO) nano-catalyst was investigated. CaO nano-catalyst was produced by calcination of eggshell powder at 900 °C and followed by hydration-dehydration treatment to improve its catalytic activity. The particle size, morphology, and elemental composition of a catalyst were characterized by using XRD, SEM, and EDX techniques, respectively.
View Article and Find Full Text PDFA modified serine cycle in Escherichia coli coverts methanol and CO to two-carbon compounds.
Nat Commun
September 2018
Academia Sinica, 128 Academia Road, Section 2, Taipei, 115, Taiwan, ROC.
Microbial utilization of renewable one-carbon compounds, such as methane, methanol, formic acid, and CO, has emerged as a potential approach to increase the range of carbon sources for bioproduction and address climate change issues. Here, we modify the natural serine cycle present in methylotrophs and build an adapted pathway for Escherichia coli, which allows microorganism to condense methanol (or formate) together with bicarbonate to produce various products. We introduce the modified cycle into E.
View Article and Find Full Text PDF