| Title: | "Synthesis and application of Cu-BTC@ZSM-5 composites as effective adsorbents for removal of toluene gas under moist ambience: kinetics, thermodynamics, and mechanism studies" |
| Author(s): | Li M; Li Y; Li W; Liu F; Qi X; Xue M; Wang Y; Zhao C; |
| Address: | "College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, People's Republic of China. College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, People's Republic of China. liufangfw@163.com. State Key Laboratory of Petroleum Pollution Control, Beijing, 102206, People's Republic of China. liufangfw@163.com. State Key Laboratory of Petroleum Pollution Control, Beijing, 102206, People's Republic of China" |
| Journal Title: | Environ Sci Pollut Res Int |
| DOI: | 10.1007/s11356-019-07293-2 |
| ISSN/ISBN: | 1614-7499 (Electronic) 0944-1344 (Linking) |
| Abstract: | "Metal organic frameworks (MOFs) are excellent adsorbents that provide abundant specific surface area, adjustable pore structure, and rich active sites. The purpose of this study was to prepare composites with hydrophobic and high microporous specific surface area and to adsorb toluene gas in moist ambience. An ethanol activation-assisted hydrothermal method was proposed to synthesize copper-benzene-1,3,5-tricarboxylic acid (Cu-BTC) metal-organic framework, Cu-BTC, and ZSM-5 molecular sieve composites (Cu-BTC@ZSM-5). The dynamic adsorption process of toluene on different adsorbents was investigated, and the results showed that the toluene adsorption capacity of Cu-BTC@ZSM-5 (158.6 mg/g) was 2.53 times higher than Cu-BTC (62.7 mg/g), when the ZSM-5 content is 5% and the humidity is 30%RH. Compared with other factors, the humidity inhibited the adsorption of toluene on Cu-BTC@ZSM-5. Langmuir model and the pseudo-second kinetics model can better describe the adsorption behavior of Cu-BTC@ZSM-5. The thermodynamic results showed the adsorption process was a spontaneous exothermic process at low temperature and mainly physical adsorption. The relative regenerability can still up to 80.4% after six cycles. The adsorption mechanisms of Cu-BTC@ZSM-5 were pore-filling adsorption, pi-pi interaction, cation-pi bonding, and hydrophobic interactions. This study will help to design a systematic route to evaluate the adsorption performance of Cu-BTC@ZSM-5 for toluene" |
| Keywords: | "Adsorption Air Pollutants/*chemistry Benzene Kinetics Models, Chemical Thermodynamics Toluene/*chemistry Adsorption properties of toluene Cu-BTC@ZSM-5 composite Ethanol activation-hydrothermal method Mechanism Metal organic frameworks (MOFs) Volatile orga;" |
| Notes: | "MedlineLi, Meng Li, Yuwei Li, Wei Liu, Fang Qi, Xuejin Xue, Ming Wang, Yongqiang Zhao, Chaocheng eng No. PPCIP2017005/the Open Project Program of State Key Laboratory of Petroleum Pollution Control/ Germany 2019/12/23 Environ Sci Pollut Res Int. 2020 Feb; 27(6):6052-6065. doi: 10.1007/s11356-019-07293-2. Epub 2019 Dec 21" |
