Collaborative Purification of Tert-Butanol and N 2 O over Fe/Co-Zeolite Catalysts

Ruiqi Wu, Ning Liu (), Chengna Dai, Ruinian Xu, Ning Wang, Gangqiang Yu and Biaohua Chen
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Ruiqi Wu: Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
Ning Liu: Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
Chengna Dai: Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
Ruinian Xu: Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
Ning Wang: Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
Gangqiang Yu: Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
Biaohua Chen: Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China

IJERPH, 2023, vol. 20, issue 6, 1-14

Abstract: N 2 O is a greenhouse gas and a candidate oxidant. Volatile organic pollutants (VOCs) have caused great harm to the atmospheric ecological environment. Developing the technique utilizing N 2 O as the oxidant to oxidize VOCs to realize the collaborative purification has significant importance and practical value for N 2 O emission control and VOC abatement. Therefore, the study of N 2 O catalytic oxidation of tert-butanol based on zeolite catalysts was carried out. A series of molecular sieves, including FER, MOR, ZSM-5, Y, and BEA, were selected as the catalyst objects, and the 1.5% wt Fe and Co were, respectively, loaded on the zeolite catalysts via the impregnation method. It was found that the catalytic performance of BEA was the best among the molecular sieves. Comparing the catalytic performance of Fe-BEA under different load gradients (0.25~2%), it was found that 1.5% Fe-BEA possessed the best catalytic activity. A series of characterization methods showed that Fe 3+ content in 1.5% Fe-BEA was the highest, and more active sites formed to promote the catalytic reaction. The α-O in the reaction eventually oxidized tert-butanol to CO 2 over the active site. The Co mainly existed in the form of Co 2+ cations over Co-BEA samples; the 2% Co-BEA possessing higher amounts of Co 2+ exhibited the highest activity among the prepared Co-BEA samples.

Keywords: N 2 O; tert-butanol; catalytic oxidation; molecular sieve (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2023
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