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A Crystalline Mesoporous Germanate with 48‐Ring Channels for CO 2 Separation
Author(s) -
Liang Jie,
Su Jie,
Luo Xiaodan,
Wang Yingxia,
Zheng Haoquan,
Chen Hong,
Zou Xiaodong,
Lin Jianhua,
Sun Junliang
Publication year - 2015
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201501718
Subject(s) - germanate , mesoporous material , crystallization , ring (chemistry) , materials science , selectivity , nanotechnology , chemical engineering , chemistry , crystallography , organic chemistry , catalysis , optoelectronics , doping , engineering
One of the challenges in materials science has been to prepare crystalline inorganic compounds with mesopores. Although several design strategies have been developed to address the challenge, expansion of pore sizes in inorganic materials is more difficult compared to that for metal–organic frameworks. Herein, we designed a novel mesoporous germanate PKU‐17 with 3D 48×16×16‐ring channels by introducing two large building units (Ge 10 and Ge 7 clusters) into the same framework. The key for this design strategy is the selection of 2‐propanolamine (MIPA), which serves as the terminal species to promote the crystallization of Ge 7 clusters. Moreover, it is responsible for the coexistence of Ge 10 and Ge 7 clusters. To our knowledge, the discovery of PKU‐17 sets a new record in pore sizes among germanates. It is also the first germanate that exhibits a good selectivity toward CO 2 over N 2 and CH 4 .