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Quasi‐continuous synthesis of iron single atom catalysts via a microcapsule pyrolysis strategy
Author(s) -
Huang Liyun,
Wu Kui,
He Qian,
Xiong Chao,
Gan Tao,
He Xiaohui,
Ji Hongbing
Publication year - 2021
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.17197
Subject(s) - catalysis , chemical engineering , pyrolysis , kinetics , chemistry , atom (system on chip) , materials science , continuous production , nanotechnology , organic chemistry , physics , quantum mechanics , computer science , engineering , embedded system
Single atom catalysts (SACs), featured with atomically dispersed metal species, have been considered as one of the most promising catalytic materials because of the excellent performance in various high‐value‐added reactions. However, the large‐scale and continuous‐type production of such SACs is still challenging. Herein, a novel and facile microcapsule strategy for the quasi‐continuous synthesis of iron SACs supported on S, N co‐doped carbon (Fe/SNC) is developed, and the Fe species are presented as isolated active sites and stabilized as the FeN 3 S‐like structure. The as‐prepared Fe/SNC catalysts exhibit excellent catalytic properties for selective oxidation of arylalkanes, which followed pseudo‐first‐order kinetics with an E a = 41.5 kJ/mol. More importantly, the two Fe/SNC catalysts synthesized at different continuous times showed essentially identical catalyst structure and catalytic performance, demonstrating the superior reliability of our microcapsule strategy for the quasi‐continuous production of SACs, which can be easily scaled up to industrial application.