Highly efficient electrocatalytic oxidation of sterol by synergistic effect of aminoxyl radicals and SeNi5P4

The exploration of efficient and environmentally friendly oxidation method is highly desirable to overcome the critical problems of poor selectivity and heavy metal contamination for the fine chemicals industry. Herein, a self‐supported three‐dimensional (3D) SeNi5P4 nanosheet electrocatalyst was r...

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Bibliographic Details
Published in:AIChE journal 2023-10, Vol.69 (10), p.n/a
Main Authors: He, Jiahui, Li, Suiqin, Li, Chun, Li, Kai, Xu, Yinjie, Wang, Mengxin, Zhao, Shuying, Zhang, Jiefeng, Zhong, Xing, Li, Xiaonian, Zhang, Zhengbin, Wang, Jianguo
Format: Article
Language:English
Subjects:
aminoxyl radicals
Chemical industry
Contamination
Continuous flow
Electrocatalysts
electrochemical alcohol oxidation
Electrochemistry
Electronic structure
Fine chemicals
Flow system
Heavy metals
Mass transfer
Oxidation
Phosphorus
Piperidine
process intensification
Selenium
stacked electrolyzer
sterol
Sterols
Synergistic effect
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Summary:The exploration of efficient and environmentally friendly oxidation method is highly desirable to overcome the critical problems of poor selectivity and heavy metal contamination for the fine chemicals industry. Herein, a self‐supported three‐dimensional (3D) SeNi5P4 nanosheet electrocatalyst was rationally designed and fabricated. Benefiting from the synergistic effect of aminoxyl radical and mesoporous SeNi5P4/graphite felt (GF), an excellent performance of ≥98% selectivity and 33.12 kg (m−3 h−1) space–time yield was obtained for sterol intermediate oxidation with the enhanced mass transfer effect of the continuous flow system. The doping of anionic selenium and phosphorus modulated the electronic structure of SeNi5P4, and the oxyhydroxides generated by surface reconstruction accelerated the turnover of 2,2,6,6‐tetramethyl‐1‐piperidine N‐oxyl (TEMPO), thereby enhancing the intrinsic electrocatalytic activity. A scale‐up experiment was conducted with stacked‐flow electrolyzer demonstrated the application potential. This work provided an efficient synergistic electrocatalytic strategy to facilitate rapid electron and mass transfer for electrochemical alcohol oxidation and highlighted the potential for practical electrosynthesis applications.
ISSN:0001-1541
1547-5905
DOI:10.1002/aic.18153