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Enhanced catalytic reduction of p-nitrophenol by nano zerovalent iron - supported metal catalysts
Catalysis Communications ( IF 3.7 ) Pub Date : 2021-07-08 , DOI: 10.1016/j.catcom.2021.106337
Galym Tokazhanov 1, 2 , Seunghee Han 3 , Woojin Lee 1, 2
Affiliation  

Nano-sized zerovalent iron (NZVI) - supported metal catalysts were synthesized to characterize their reactivity for the reductive degradation of p-nitrophenol (PNP). Among the tested monometallic catalysts using metal promoters, Zn/NZVI showed the highest reactivity with complete reduction of PNP in 5 min (k = 0.0263 s−1). The addition of Pd accelerated the degradation kinetics of PNP with complete reduction in 1 min (k = 0.095 s−1) but promoter's presence on bimetallic catalyst surfaces simply decreased their reactivity. A proper Pd amount (1.5 wt% Pd/NZVI) showed the highest degradation rate (k = 0.248 s−1), while after its content increased to 10 wt% the rate was reduced by 5.8 times.



中文翻译:

纳米零价铁负载金属催化剂增强催化还原对硝基苯酚

合成了纳米尺寸的零价铁 (NZVI) - 负载的金属催化剂,以表征它们对对硝基苯酚 (PNP) 的还原降解的反应性。在使用金属促进剂测试的单金属催化剂中,Zn/NZVI 表现出最高的反应性,在 5 分钟内完全还原 PNP(k = 0.0263 s -1)。Pd 的添加加速了 PNP 的降解动力学,在 1 分钟内完全还原 (k = 0.095 s -1 ),但双金属催化剂表面上的助催化剂只是降低了它们的反应性。适当的 Pd 量(1.5 wt% Pd/NZVI)显示出最高的降解速率(k = 0.248 s -1),而在其含量增加到 10 wt% 后,速率降低了 5.8 倍。

更新日期:2021-07-09
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