Microporous Organic Polymers Based on Hyper‐Crosslinked Coal Tar: Preparation and Application for Gas Adsorption

Abstract

Hyper-crosslinked polymers (HCPs) are promising materials for gas capture and storage, but high cost and complicated preparation limit their practical application. In this paper, a new type of HCPs (CTHPs) was synthesized through a one-step mild Friedel-Crafts reaction with low-cost coal tar as the starting material. Chloroform was utilized as both solvent and crosslinker to generate a three-dimensional crosslinked network with abundant micropores. The maximum BET surface area of the prepared CTHPs could reach up to 929 m g . Owing to the high affinity between the heteroatoms on the coal-tar building blocks and the CO molecules, the adsorption capacity of CTHPs towards CO reached up to 14.2 wt % (1.0 bar, 273 K) with a high selectivity (CO /N =32.3). Furthermore, the obtained CTHPs could adsorb 1.27 wt % H at 1.0 bar and 77.3 K, and also showed capacity for the capture of high organic vapors at room temperature. In comparison with other reported porous organic polymers, CTHPs have the advantages of low-cost, easy preparation, and high gas-adsorption performance, making them suitable for mass production and practical use in the future.

Microporous Carbon and Carbon/Metal Composite Materials Derived from Bio-Benzoxazine-Linked Precursor for CO2 Capture and Energy Storage Applications

“…We attribute the higher CO 2 uptake for PCMC to its higher surface area (1110 m 2 g –1 ) and abundance of micropores that provided suitable spaces for CO 2 uptake. Furthermore, because of its high surface area and large pores, the CO 2 adsorption of our PCMC was excellent when compared with that of other previously reported porous materials, including poly(TPE-TPE-BZ), poly(Py-TPE-BZ), BPOP-1, the BZ-linked material BoxPOP-1, the ferrocene-containing material Fc-CMP-1, A6CMP-3, CTF-HUST-3, the triphenylamine-based polymer PTPA-3, CTHP-3, and COF-102 [ 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 ].…”

Carbon dioxide adsorption based on porous materials

“…19 shows the different porous POPs and their surface areas for CO 2 capture at different temperatures (273 K, 298 K) and at 1 bar pressure. [198][199][200][201][202][203][204][205][206][207][208][209]…”

Sulfur-Decorated Hyper-Cross-Linked Coal Tar: A Microporous Organic Polymer for Efficient and Expeditious Mercury Removal

“…30−32 Recently, Li et al applied coal tar as a low-cost starting material for the synthesis of a HCP and introduced this three-dimensional network polymer for gas adsorption. 33 In 2019, Garci ́a-Di ́ez et al also offered different activated carbons obtained from coal tar in CO 2 capturing. 34 Therefore, the presentation of a new crosslinking resin based on coal tar and extension of its application is relevant to current investigations.…”