王忠刚

个人信息Personal Information

教授

博士生导师

硕士生导师

性别:男

毕业院校:中国科学院长春应用化学研究所

学位:博士

所在单位:化工学院

学科:高分子材料. 高分子化学与物理

办公地点:西部校区化工实验楼A座206

联系方式:0411-84986096,13591156428

电子邮箱:zgwang@dlut.edu.cn

扫描关注

论文成果

当前位置: 中文主页 >> 科学研究 >> 论文成果

Tetraphenyladamantane-Based Microporous Polyimide and Its Nitro-Functionalization for Highly Efficient CO2 Capture

点击次数:

论文类型:期刊论文

发表时间:2014-08-07

发表刊物:JOURNAL OF PHYSICAL CHEMISTRY C

收录刊物:SCIE、EI、Scopus

卷号:118

期号:31

页面范围:17585-17593

ISSN号:1932-7447

摘要:A new microporous polyimide network (PI-ADNT) is synthesized from 1,3,5,7-tetrakis(4-aminophenyl)-adamantane and naphthalene-1,4,5,8-tetracarboxylic dianhydride. Subsequently, PI-ADNT is nitrated in fuming nitric acid with different nitration time to produce three nitro-decorated porous polyimides (PI-NO(2)s). Their chemical structures and nitration degrees are characterized by FTIR, solid-state C-13 CP/MAS NMR spectra and element analysis. The interesting evolution of porous morphology and porosity of PI-NO(2)s with nitration time is investigated in detail. The results show that PI-ADNT has the BET surface area of 774 m(2) g(-1) with microporous size centering at 0.75 nm. After nitration-modifications, PI-NO(2)s display decreased surface area but remarkably increased CO2 uptake up to 4.03 mmol g(-1), which is superior to most of porous polymers reported in the literature. Moreover, the CO, adsorption selectivites over CH4 and N-2 in PI-NO(2)s are also significantly improved in comparison with PI-ADNT. The CO2 adsorption/separation properties of PI-ADNT and its nitrated products are studied and explained in terms of the variations of porous structure and chemical composition as well as the interaction parameters between CO2 molecule and polymer skeleton such as Henry's constant, first virial coefficient, and enthalpy of adsorption.