期刊论文

Experimental Study on Degradation Efficiency of Automotive Exhaust by Nano-TiO2 Spraying on Pavement in Low Temperature Environment

中文

森林工程

1006-8023

2019

35

6

72-76+85

10.3969/j.issn.1006-8023.2019.06.012

黑龙江省自然科学基金联合引导项目(LH2019E078) 哈尔滨市应用技术研究与开发项目青年后备人才计划(2014RFQXJ164).

本校为其他机构

为探究低温环境下路面喷涂纳米TiO2降解汽车尾气效能,模拟低温环境,设计汽车尾气室内降解试验,观察有害气体（CO、HC、NO）的降解效能。将纳米TiO2浆料喷涂至车辙试件表面,放入自制密闭的低温试验仓,通入汽车尾气,达到设定的初始浓度时,开启仿太阳光灯,每隔10 min开启尾气分析仪吸气装置6 s,记录对应的气体浓度。试验结果表明:温度为-10℃时,在0～40 min时间内各有害气体浓度降低速率均较大,在60 min时,气体HC的平均浓度稳定在23. 7 ppm,CO的平均浓度稳定在0. 13%,NO的平均浓度稳定0 ppm。在相同的试验条件下,低温和常温环境,有害气体浓度曲线变化规律具有一致性,反应仓中HC、CO、NO的浓度均随时...

In order to explore the degradation efficiency of automobile exhaust by nano-TiO2 spraying on pavement in low temperature environment and simulate low temperature environment,indoor degradation test of automobile exhaust was designed to observe the degradation efficiency of harmful gases (CO,HC,NO).The nano-sized TiO2 slurry was sprayed on the surface of rutting specimens,put into a self-made closed low-temperature test chamber,put into the automobile exhaust,and when the initial concentration was set,the imitation solar lamp was turned on,and ...