| Title: | Porous carbon black-polymer composites for volatile organic compound adsorption and efficient microwave-assisted desorption |
| Author(s): | Peyravi A; Hashisho Z; Crompton D; Anderson JE; |
| Address: | "University of Alberta, Department of Civil and Environmental Engineering, Edmonton, AB T6G 1H9, Canada. University of Alberta, Department of Civil and Environmental Engineering, Edmonton, AB T6G 1H9, Canada. Electronic address: hashisho@ualberta.ca. Ford Motor Company, Environmental Quality Office, Dearborn, MI 48121, USA. Ford Motor Company, Research and Advanced Engineering, Dearborn, MI 48121, USA" |
| DOI: | 10.1016/j.jcis.2021.12.097 |
| ISSN/ISBN: | 1095-7103 (Electronic) 0021-9797 (Linking) |
| Abstract: | "Adsorbents with high surface area, thermal stability and microwave absorption ability are highly desired for cyclic adsorption and microwave regeneration processes. However, most polymeric adsorbents are transparent to microwaves. Herein, porous hyper-crosslinked polymers (HCP) of (4,4'-bis((chloromethyl)-1,1'-biphenyl-benzyl chloride)) with different carbon black (CB) contents were synthesized via the Friedel-Crafts reaction. CB was selected as the filler due to its low cost and high dielectric loss and was embedded inside the polymer structure during polymerization. CB-containing composites showed enhanced thermal stability at elevated temperatures, and more than a 90-times increase in the dielectric loss factor, which is favorable for microwave regeneration. Nitrogen physisorption analysis by the Bruner-Emmett-Teller isotherms demonstrated that CB presence in the polymer structure nonlinearly decreases the surface area and total pore volume (by 38% and 26%, respectively at the highest CB load). Based on the characterization testing, 4 wt% of CB was found to be an optimum filler content, having the highest MW absorption and minimal effect on the adsorbent porosity. HCP with 4 wt% CB allowed a substantial increase in the desorption temperature and yielded more than a 450% enhancement in the desorption efficiency compared to HCP without CB" |
| Keywords: | Adsorption Carbon *Microwaves Polymers Porosity Soot *Volatile Organic Compounds Carbon black Hyper-crosslinked polymer Microwave Absorption Volatile organic compounds; |
| Notes: | "MedlinePeyravi, Arman Hashisho, Zaher Crompton, David Anderson, James E eng 2022/01/08 J Colloid Interface Sci. 2022 Apr 15; 612:181-193. doi: 10.1016/j.jcis.2021.12.097. Epub 2021 Dec 18" |
