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An Extra‐Large‐Pore Pure Silica Zeolite with 16×8×8‐Membered Ring Pore Channels Synthesized using an Aromatic Organic Directing Agent
Author(s) -
Zi WenWen,
Gao Zihao,
Zhang Jun,
Zhao BaoXun,
Cai XianShu,
Du HongBin,
Chen FeiJian
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201915232
Subject(s) - zeolite , porosity , ring (chemistry) , chemistry , chemical engineering , yield (engineering) , molecule , materials science , organic chemistry , catalysis , composite material , engineering
Extra‐large‐pore zeolites for processing large molecules have long been sought after by both the academia and industry. However, the synthesis of these materials, particularly extra‐large‐pore pure silica zeolites, remains a big challenge. Herein we report the synthesis of a new extra‐large‐pore silica zeolite, designated NUD‐6, by using an easily synthesized aromatic organic cation as structure‐directing agent. NUD‐6 possesses an intersecting 16×8×8‐membered ring pore channel system constructed by four‐connected (Q 4 ) and unusual three‐connected (Q 3 ) silicon species. The organic cations in NUD‐6 can be removed in nitric acid to yield a porous material with high surface area and pore volume. The synthesis of NUD‐6 presents a feasible means to prepare extra‐large pore silica zeolites by using assembled aromatic organic cations as structure‐directing agents.