结晶
分子筛
材料科学
介孔材料
化学工程
微晶
沸石
同种类的
热稳定性
纳米技术
Crystal(编程语言)
纳米颗粒
化学
催化作用
有机化学
冶金
工程类
程序设计语言
物理
热力学
计算机科学
作者
Shuo Tao,Xiaolei Li,Xiaoge Wang,Ying Wei,Ya Jia,Jing Ju,Yuanhui Cheng,Huaisheng Wang,Shuwen Gong,Xueping Yao,Haixu Gao,Cunyin Zhang,Qiqi Zang,Zhijian Tian
标识
DOI:10.1002/anie.201915144
摘要
The synthesis of hierarchical nanosized zeolite materials without growth modifiers and mesoporogens remains a substantial challenge. Herein, we report a general synthetic approach to produce hierarchical nanosized single-crystal aluminophosphate molecular sieves by preparing highly homogeneous and concentrated precursors and heating at elevated temperatures. Accordingly, aluminophosphate zeotypes of LTA (8-rings), AEL (10-rings), AFI (12-rings), and -CLO (20-rings) topologies, ranging from small to extra-large pores, were synthesized. These materials show exceptional properties, including small crystallites (30-150 nm), good monodispersity, abundant mesopores, and excellent thermal stability. A time-dependent study revealed a non-classical crystallization pathway by particle attachment. This work opens a new avenue for the development of hierarchical nanosized zeolite materials and understanding their crystallization mechanism.
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