A 36-ring zeolite with intrinsic cylindrical mesopores

• 成果类型: Article
• 署名作者: Sun, Jiazheng; Tian, Xudong; Zhang, Zhenghan; Liu, Jing; Han, Lei; Xu, Fanrong; Jiang, Han; Ma, Chao; Guo, Hongwei; Lin, Cong; Jiang, Qike; Li, Guangchao; Lo, Tsz Woon Benedict; Song, Haitao; Lin, Wei; Xu, Le; Li, Jian
• 署名单位: Nanjing University; Suzhou Laboratory; Nanjing Tech University; Sinopec; Hong Kong Polytechnic University; Westlake University; Chinese Academy of Sciences
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-8075; 1095-9203
• DOI: 10.1126/science.aec4882
• 发表日期: 2026-04-02
• 页码: 83-86
• 关键词: LARGE-PORE ZEOLITE; HIGH-SILICA ZEOLITE; molecular-sieve; electron-diffraction; FRAMEWORK TOPOLOGY; density; AREA

摘要

Stable extra-large-pore zeolites are highly desirable for catalysis and molecular separation, but most remain microporous, limiting their effectiveness for bulky substrates. Among the few extra-large-pore zeolites that exhibit mesoporosity, the pores typically form as elongated, noncircular pore apertures. We report that NJU120-6, a stable silicate zeolite with an intrinsic cylindrical mesoporous system, has the currently largest 36-ring windows with a free diameter of 25.71 angstroms by 19.12 angstroms. NJU120-6 exhibits the lowest framework density of 9.39 silicon atoms per cubic nanometer and a pore volume of 0.66 cubic centimeters per gram. It remains stable up to 1173 kelvin and can incorporate aluminum and titanium, enabling superior performance in catalytic cracking and in liquid-phase alkene oxidation of bulky molecules, respectively.