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Facile Synthesis of Hierarchical Nanosized Single‐Crystal Aluminophosphate Molecular Sieves from Highly Homogeneous and Concentrated Precursors
Author(s) -
Tao Shuo,
Li Xiaolei,
Wang Xiaoge,
Wei Ying,
Jia Yunling,
Ju Jing,
Cheng Yuanhui,
Wang Huaisheng,
Gong Shuwen,
Yao Xingjun,
Gao Haixu,
Zhang Cunyin,
Zang Qiqi,
Tian Zhijian
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201915144
Subject(s) - crystallization , molecular sieve , materials science , mesoporous material , zeolite , crystallite , homogeneous , chemical engineering , thermal stability , nanotechnology , crystal (programming language) , nanoparticle , chemistry , catalysis , organic chemistry , physics , computer science , engineering , thermodynamics , programming language , metallurgy
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.