摘要
研究三聚磷酸二氢铝对氨、甲胺、二甲胺、三甲胺、正丁胺等气体的静态吸附过程动力学特性。比较了三聚磷酸二氢铝、活性炭对碱性气体的吸附性能与规律,通过滴定实验和红外测定推测其吸附机理。结果表明:活性炭对碱性气体的吸附存在脱附,尽管吸附速率较快但吸附量较小,对氨气、甲胺、二甲胺、三甲胺和正丁胺的吸附量分别是73.12、76.37、79.24、83.11、70.91 mg/g。三聚磷酸二氢铝对碱性气体的吸附是一个化学吸附过程,吸附速率快且吸附量大,吸附量分别是431.7、790.1、889.2、912.4、635.3 mg/g,其吸附过程符合Elovich方程,是一个由吸附速率和扩散因子综合控制的过程。
Kinetics characteristics of aluminum dihydrogen tripolyphosphate on ammonia, methylamine, dimethylamine, trimethylamine and n-butylamine gas were studied by static absorption method. Adsorption properties and rule of alkaline gas by aluminum dihydrogen tripolyphosphate and activated carbon were compared, and their adsorption mechanism was explored by titration and infrared method. Results showed that desorption existed in the absorption of alkaline gas by activated carbon, with adsorption rate faster but adsorption quantity smaller. The adsorption capacity of activated carbon on ammonia, methy-lamine, dimethylamine, trimethylamine and n-butylamine gas was 73.12,76.37, 79.24, 83.11 and 70.91 mg/g respectively. Absorption of aluminum dihydrogen tripolyphosphate on alkaline gas was a chemical process, with faster adsorption rate and bigger adsorption capacity, and the adsorption capacity of ammonia, methylamine, dimethylamine, trimethylamine and n-butylamine gas as 431.7, 790.1, 889.2, 912.4 and 635.3 mg/g respectively. The absorption has been found to fit the Elovich equation, which is controlled by both adsorption rate and diffusion factor process.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2014年第3期100-103,共4页
Environmental Science & Technology
基金
2011广西高校科研项目资助(200103YB041)
关键词
三聚磷酸二氢铝
有机胺
碱性气体
氨
aluminum dihydrogen tripolyphosphate
organic amine
alkaline gas
ammonia
作者简介
吴胜富（1966-），男，讲师，主要从事材料化学的研究
通讯作者，教授，（电子信箱）aiqunyuan1999@sina．com。
