化工学报2015，Vol.66Issue(9)：3597-3604,8.DOI:10.11949/j.issn.0438-1157.20150817
Al-MCM-41 介孔分子筛吸附喹啉的性能
Adsorption of quinoline on zeolite Al-MCM-41
王云芳 1步长娟 1迟志明 2李倩2
作者信息
- 1. 中国石油大学化学化工学院化学工程系,山东 青岛 266580
- 2. 中国石油工程建设公司华东设计分公司,山东 青岛 266071
- 折叠
摘要
Abstract
Under basic conditions, Al-containing mesoporous zeolite Al-MCM-41 was successfully synthesized by hydrothermal synthesis method using sodium metasilicate as silica source, sodium aluminate as alumina source and CTAB as templating agents. XRD and BET were used to investigate the characterization of Al-MCM-41. The adsorptive capacity of this mesoporous zeolite for quinolone was analyzed through adsorption experiment for the nitrogen compounds in diesel in a continuous fixed bed reactor. The thermodynamic performance of the adsorption process was investigated in the range from 353.15 K to 393.15 K. Langmuir and Freundlich isothermal adsorption models were employed to fit the experimental data. The results of characterization showed that Al-MCM-41 with Si/Al = 60 had larger pore volume, specific surface area and narrow pore distribution. The mesoporous molecular sieve had good crystallization degree and ordered pore structure. The adsorption of quinoline on zeolite Al-MCM-41 with Si/Al = 60 was in accordance with the Freundlich isothermal adsorption model. The thermodynamic parameters, such as ΔH, ΔG, ΔS and apparent activation energy, were calculated to be?0.7682 kJ·mol?1, ?28.1215 kJ·mol?1, 73.2434 J·mol?1·K?1 and 2.8575 kJ·mol?1, respectively. Pesto-second order rate equation was better to describe adsorption of quinolone.关键词
MCM-41介孔分子筛/表征/喹啉/吸附/热力学/动力学Key words
mesoporous molecular sieve Al-MCM-41/characterization/quinoline/adsorptive/thermodynamics/kinetics分类
化学化工引用本文复制引用
王云芳,步长娟,迟志明,李倩..Al-MCM-41 介孔分子筛吸附喹啉的性能[J].化工学报,2015,66(9):3597-3604,8.
