Accelerated discovery of stable, extra-large-pore nano zeolites with micro-electron diffraction

• 成果类型: Article
• 署名作者: Ma, Chao; Zhang, Zhenghan; Zhang, Mengdi; Tian, Xudong; Lin, Cong; Han, Lei; Li, Guangchao; Lo, Benedict Tsz Woon; Yung, Ka-Fu; Song, Haitao; Lin, Wei; Camblor, Miguel A.; Xu, Le; Li, Jian
• 署名单位: Nanjing University; Hong Kong Polytechnic University; Sinopec; Consejo Superior de Investigaciones Cientificas (CSIC); CSIC - Instituto de Ciencia de Materiales de Madrid (ICMM); Nanjing Tech University; Suzhou Laboratory; Chinese Academy of Sciences
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-9113
• DOI: 10.1126/science.adv5073
• 发表日期: 2025-06-26
• 页码: 1417-1421
• 关键词: high-silica zeolite; molecular-sieve; cluster-analysis

摘要

Stable zeolites with extra-large pores and nano dimensions that are capable of processing large molecules are in high demand but have been difficult to produce. Their complex structures and nanoscale crystal sizes present challenges for analysis using conventional x-ray diffraction techniques, leading to inefficiencies in material development. We report NJU120-1 and NJU120-2, two robust and fully connected aluminosilicate nano zeolites featuring interconnected channel systems with extra-large 22-ring pores. NJU120-1 is a nanosheet with only about 8-nanometer thickness, corresponding to 1.5 unit cells, and NJU120-2 is a nanorod with 50 by 250 nanometer dimensions. Their synthesis optimization was greatly accelerated through rapid structure determination with MicroED, revealing their multidimensional pore structures. Their very large largest-free-sphere diameters of approximately 1.2 nanometers coupled with nano morphologies enabled catalytic cracking of large molecules.