Premium
Widening Synthesis Bottlenecks: Realization of Ultrafast and Continuous‐Flow Synthesis of High‐Silica Zeolite SSZ‐13 for NO x Removal
Author(s) -
Liu Zhendong,
Wakihara Toru,
Oshima Kazunori,
Nishioka Daisuke,
Hotta Yuusuke,
Elangovan Shanmugam P.,
Yanaba Yutaka,
Yoshikawa Takeshi,
Chaikittisilp Watcharop,
Matsuo Takeshi,
Takewaki Takahiko,
Okubo Tatsuya
Publication year - 2015
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201501160
Subject(s) - zeolite , catalysis , crystallization , metastability , chemical engineering , materials science , ion exchange , realization (probability) , inorganic chemistry , chemistry , ion , organic chemistry , statistics , mathematics , engineering
Abstract Characteristics of zeolite formation, such as being kinetically slow and thermodynamically metastable, are the main bottlenecks that obstruct a fast zeolite synthesis. We present an ultrafast route, the first of its kind, to synthesize high‐silica zeolite SSZ‐13 in 10 min, instead of the several days usually required. Fast heating in a tubular reactor helps avoid thermal lag, and the synergistic effect of addition of a SSZ‐13 seed, choice of the proper aluminum source, and employment of high temperature prompted the crystallization. Thanks to the ultra‐short period of synthesis, we established a continuous‐flow preparation of SSZ‐13. The fast‐synthesized SSZ‐13, after copper‐ion exchange, exhibits outstanding performance in the ammonia selective catalytic reduction (NH 3 ‐SCR) of nitrogen oxides (NO x ), showing it to be a superior catalyst for NO x removal. Our results indicate that the formation of high‐silica zeolites can be extremely fast if bottlenecks are effectively widened.