催化作用
沸石
介孔材料
氢氧化物
色散(光学)
化学
催化氧化
无机化学
杂原子
分子筛
化学工程
纳米颗粒
有机化学
工程类
物理
光学
戒指(化学)
作者
Jialu Wang,Yijun Shi,Fanzhe Kong,Renxian Zhou
标识
DOI:10.1016/j.jes.2021.11.016
摘要
Different zeolites supported Pt catalysts with micro-mesoporous structure were prepared by organic base tetrapropylammonium hydroxide (TPAOH) treatment and their catalytic oxidation activity for various volatile organic compounds (VOCs) were evaluated. The results reveal that the synergistic effect between Pt nanoparticles and surface acid sites plays an important role in VOCs low-temperature removal. The small size and high dispersion of Pt nanoparticles on the surface of the zeolites would promote the catalytic oxidation of aromatics and alkanes over the Pt/zeolite catalysts, while strong acidity and abundant acid sites of catalysts are in favour of the oxidation of the VOCs containing N and O heteroatoms. In addition, it was found that Pt/ZSM-5 catalyst exhibits the highest oxidation activity for various VOCs low-temperature removal amongst all the catalysts due to the balance of both Pt dispersion and abundant acid sites in the catalyst. This comprehensive consideration should be very helpful when designing and preparing novel catalysts for the low-temperature removal of VOCs.
科研通智能强力驱动
Strongly Powered by AbleSci AI