化工学报2013，Vol.64Issue(3)：1091-1098,8.DOI:10.3969/j.issn.0438-1157.2013.03.043
高分散型纳米级Pd/Fe对4-氯苯酚的还原脱氯
Reductive dechlorination of 4-chlorophenol by highly dispersed Pd/Fe nanoparticles
摘要
Abstract
Highly dispersed Pd/Fe nanoparticles were prepared by using ultrasound-assisted liquid phase reductive method, and used for reductive dechlorination of 4-chlorophenol (4-CP). The affecting factors and degradation kinetics were investigated. The experimental results showed that: obvious modification was achieved on the particle size, most of them less than l00nm, and on specific surface areas, increased 43. 42%. The efficiency of 4-CP reductive dechlorination was up to 97% on the Pd/Fe nanoparticles with Pd mass fraction 0.2% and its dosage 2. 5 g·L-1 at the conditions: time 300 min, initial 4-CP concentration 20 mg·L-1, pH value 3. 0, and reaction temperature 30℃. The degradation reaction of 4-CP followed pseudo-first-order kinetics and the apparent pseudo-first-order kinetics constant was 1. 76 × 10-2 min-1.关键词
超声波/高分散型纳米级Pd/Fe/4-氯苯酚/动力学Key words
ultrasound/ highly dispersed Pd/Fe nanoparticles/ 4-chlorophenol/ kinetics分类
资源环境引用本文复制引用
赵德明,李敏,徐新华..高分散型纳米级Pd/Fe对4-氯苯酚的还原脱氯[J].化工学报,2013,64(3):1091-1098,8.基金项目
浙江省自然科学基金项目(Y5100075) （Y5100075）
浙江省科技厅公益技术研究社会发展项目(2012C23044). （2012C23044）
