期刊论文

中文

安全与环境学报

1009-6094

2017

17

5

1915-1921

10.13637/j.issn.1009-6094.2017.05.057

广东省省级科技计划项目（2016B020240007） 广州市科技计划项目（201508020078）

本校为第一机构

在N_2保护下采用不同高温对活性炭进行热改性,得到了4种改性活性炭(AC-1至AC-4) 。采用气体吸附仪、Boehm滴定、傅里叶变换红外光谱仪(FTIR)对活性炭表面的物化性质进行了表征。通过等温吸附试验考察了改性前后活性炭对甲萘威的吸附性能,确定了最佳改性温度为600 ℃,探讨了活性炭的吸附能力与其表面物化性质之间的关系。结果表明:热改性使活性炭表面的物化性质发生了改变,活性炭对甲萘威的吸附量与其比表面积、孔容、表面酸性官能团和O元素含量具有显著相关性;活性炭对甲萘威的吸附行为符合准二级吸附动力学方程和Langmuir等温吸附方程,颗粒内扩散模型表明内扩散不是控制活性炭吸附速率的唯一阶...

The paper is aimed to present its methods for preparing four kinds of modified activated carbons under the different temperature conditions to protect the nitrogen atmosphere. For the research purpose,we have examined their surface physicochemical properties in a variety of approaches,such as the application of a gas adsorption analyzer,a Boehm titration,a scanning electron microscope (SEM) and the Fourier transformed infrared spectroscopy (FTIR). At the same time,we have also done the isothermal adsorption experiments under the conditions with...