净化室内甲醛的催化剂效果分析

Analysis of Catalyst Effect on Indoor Formaldehyde Purification

本文研究设计了动态气路模拟室内甲醛并提供一定浓度的甲醛,研究了活性炭、沸石负载氧化亚铜和氧化亚铜掺氧化钨的制备方法,并通过对甲醛气体处理效果来测试其催化性能,分析动态光催化剂效果;结果表明,在无光和可见光下,沸石负载的氧化亚铜做催化剂来降解甲醛,趋势基本平稳。掺杂氧化钨的氧化亚铜在可见光下,去除效果高于无光条件下,但是差别不是很大。无光或可见光条件下,活性炭负载氧化亚铜的去除率是最高的,活性炭本身去除效率随着时间的延长明显下降,而氧化亚铜和氧化亚铜掺氧化钨催化剂的去除率保持平稳,这也反映了催化剂相对于吸附剂的优势。

In this paper, the design of a dynamic gas circuit to simulate indoor formaldehyde and provide a certain concentration of formaldehyde, the study of activated carbon, zeolite loaded cuprous oxide and cuprous oxide-doped tungsten oxide preparation method, and through the formaldehyde gas treatment effect to test The photocatalytic activity of the catalyst is also investigated. The results shows that the zeolite-supported cuprous oxide is a catalyst to degrade formaldehyde in the absence of light and visible light. In the case of cuprous oxide doped with tungsten oxide in the visible light, the removal efficiency is higher than that in the case of no light, but the difference is not great. Under the condition of no light or visible light, the removal rate of activated carbon loaded with cuprous oxide is the highest, and the removal efficiency of activated carbon itself decreased with time, while the removal rate of cuprous oxide and cuprous oxide-doped tungsten oxide catalyst remains stable. Also reflects the advantage of the catalyst relative to the adsorbent.