We substituted several environmentally friendly catalysts which included HY and H- β zeolites, various cation-exchanged β zeolites, and solid-supported ferric chloride for conventional catalysts for the synth...We substituted several environmentally friendly catalysts which included HY and H- β zeolites, various cation-exchanged β zeolites, and solid-supported ferric chloride for conventional catalysts for the synthesis of 3-(1-cyclohexenyl)-2-butanone from the reaction of ethylidenecyclohexane with acetic anhydride at room temperature. HY zeolite was found to be the most effective for this reaction, and gave the acylated product in a 72% yield under the conditions of n (ethylidenecyclohexane)/ n (acetic anhydride)/ m (HY zeolite)=1 mmol/10 mmol/0 100 g, reaction temperature 25 ℃ and reaction time 2 h. The used HY zeolite can be recovered, regenerated and gave almost the same yield as the fresh one. The lifetime of the HY zeolite is over 80 h. The effect of different factors on the reaction has also been investigated.展开更多
MXene-based 2D heterostructures have emerged as a highly promising area of research in the field of energy storage and conversion,owing to their exceptional properties and versatility.This comprehensive review aims to...MXene-based 2D heterostructures have emerged as a highly promising area of research in the field of energy storage and conversion,owing to their exceptional properties and versatility.This comprehensive review aims to highlight the recent advancements and challenges associated with tailoring MXene-based heterostructures.The review focuses on the progress made in the past decade regarding 2D/2D MXene-based heterostructures for energy storage/conversion.The influence of interfacial interactions,electronic conductivity,ion diffusion pathways,and surface chemistry on the performance of these heterostructures in supercapacitors,batteries,and water-splitting reactions have been critically examined.By considering these factors,researchers gain insights into the design principles and optimization strategies for MXene-based heterostructures.By understanding the progress made and the existing challenges,researchers can further explore the vast potential of MXene heterostructures and contribute to the development of next-generation energy storage and conversion technologies.展开更多
基金Supported by the National Natural Science Foundation of China( No.2 0 1730 14 )
文摘We substituted several environmentally friendly catalysts which included HY and H- β zeolites, various cation-exchanged β zeolites, and solid-supported ferric chloride for conventional catalysts for the synthesis of 3-(1-cyclohexenyl)-2-butanone from the reaction of ethylidenecyclohexane with acetic anhydride at room temperature. HY zeolite was found to be the most effective for this reaction, and gave the acylated product in a 72% yield under the conditions of n (ethylidenecyclohexane)/ n (acetic anhydride)/ m (HY zeolite)=1 mmol/10 mmol/0 100 g, reaction temperature 25 ℃ and reaction time 2 h. The used HY zeolite can be recovered, regenerated and gave almost the same yield as the fresh one. The lifetime of the HY zeolite is over 80 h. The effect of different factors on the reaction has also been investigated.
基金supported by the Hong Kong Re-search Grants Council(Project No.CityU 11218420).
文摘MXene-based 2D heterostructures have emerged as a highly promising area of research in the field of energy storage and conversion,owing to their exceptional properties and versatility.This comprehensive review aims to highlight the recent advancements and challenges associated with tailoring MXene-based heterostructures.The review focuses on the progress made in the past decade regarding 2D/2D MXene-based heterostructures for energy storage/conversion.The influence of interfacial interactions,electronic conductivity,ion diffusion pathways,and surface chemistry on the performance of these heterostructures in supercapacitors,batteries,and water-splitting reactions have been critically examined.By considering these factors,researchers gain insights into the design principles and optimization strategies for MXene-based heterostructures.By understanding the progress made and the existing challenges,researchers can further explore the vast potential of MXene heterostructures and contribute to the development of next-generation energy storage and conversion technologies.
