Breakthrough in Nanotechnology: Atomic Layer Deposition Enhances Lewis Acid Catalysts

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Researchers from the Chinese Academy of Sciences have made a significant discovery in the field of nanotechnology, utilizing atomic layer deposition (ALD) to improve the efficiency of Lewis acid catalysts. According to the study, published in Science China Chemistry, the team successfully introduced tin species into dealuminized Beta zeolites using ALD, resulting in a significant increase in active Lewis acid sites and improved cyclohexanone conversion and caprolactone selectivity in the Baeyer-Villiger oxidation reaction.

Key Takeaways:

  • The researchers used ALD to introduce Sn species into dealuminized Beta zeolites, increasing the number of Lewis acid sites and improving the catalyst's efficiency.
  • The precision-controlled Sn location in ALD-Sn-Beta resulted in enhanced cyclohexanone conversion and caprolactone selectivity compared to traditional impregnation methods.
  • The study provides valuable insights into the design and synthesis of highly efficient Lewis acid catalysts, crucial in various reactions.
  • The National Key R&D Program of China, National Natural Science Foundation of China (NSFC), Fundamental Research Program of Shanxi Province, and Fundamental Research Project of ICC-CAS funded the research project.
  • The team of researchers, led by Xiaohan Wang from the Chinese Academy of Sciences, successfully synthesized ALD-Sn-Beta and compared its performance to traditional impregnation methods.

Statistics:

  • The research concluded that the active Lewis acid sites of ALD-Sn-Beta were more than 10% higher than those of traditional impregnation methods (Im-Sn-Beta).
  • The catalyst's efficiency in the Baeyer-Villiger oxidation reaction increased by 25% due to the precise tuning of Sn location using ALD.
  • The research has been peer-reviewed and published in Science China Chemistry.

Sources:

  • Srivastava, N. K. (ed.). Science China Chemistry. 2025.
  • Wang, X., et al. (2025). Tuning Sn Location In Zeolites By Atomic Layer Deposition To Construct Efficient Lewis Acid Catalysts for the Baeyer-villiger Oxidation Reaction. Science China Chemistry, 2025.
  • Chinese Academy of Sciences. State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Taiyuan 030001, People's Republic of China. Contact Xiaohan Wang for additional information.