摘要
以活性炭纤维为载体,用浸涂法制备了TiO2/ACF(活性炭纤维)光催化剂,设计了栅式光反应器用于空气中微量甲醛的净化,研究了ACF/TiO2的组成和光反应器构造对甲醛净化量的影响。结果表明,TiO2/ACF对空气中微量甲醛有较高的光催化降解活性,催化剂m(TiO2)/m(ACF)=0.082 1,光反应器催化层厚度为2 mm,各催化层间隔为20 mm时,甲醛净化量较大。TiO2/ACF催化剂稳定性好,累计运行45 h,甲醛的净化速率仍保持在0.150μg/(g.m in)左右。
Formaldehyde was removed by a grid-like photocatalytic reactor with active carbon fiber （ACF）-supported TiO2 catalyst, by which HCHO gas is decomposed. The removal efficiency of different mass ratio of ACF to TiO2 and different reactors were studied. The results showed that TiO2/ACF is an effective material to remove HCHO. The high efficiency could be obtained when the mass ratio of TiO2 to ACF is 0. 082 1, thickness of the catalyst is 2 mm and the distance between adjacent layers is 20 mm. The catalyst exhibited high stability so that the rate of HCHO removal retained 0. 150 μg/（ g · min） after the catalyst had been used 45 h.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2006年第5期456-459,共4页
Fine Chemicals
关键词
TiO2
活性炭纤维
光催化反应器
甲醛
TiO2
active carbon fiber
photocatalytic reactor
formaldehyde
