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Microporous Hypercross-linked Conjugated Quinonoid Chromophores of Anthracene: Novel Polymers for CO_2 Adsorption

Chinese Journal of Polymer Science 2015年第2期33卷 224-235页

作者： rajangam Vinodh Mani Ganesh Mei Mei Peng Aziz Abidov Muthiahpillai Palanichamy Wang Seog Cha Hyun-Tae Jang department of Chemical Engineering Hanseo University korea carbon capture and sequestration r and d centre School of Civil and Environmental Engineering Kunsan National University

Microporous hypercross-linked conjugated quinonoid chromophores represent a novel class of amorphous polymers, synthesized by the reaction of anthracene with dimethoxy methane in the presence of FeCl3 catalyst. Their N2 adsorption isotherms confirm their microporous nature. diffuse reflectance UV-Visible（drS UV-Vis） spectroscopy confirms their matrix built with the conjugated quinonoids by their broad light absorption characteristics extending from 1000 nm to 200 nm with the absorbance maximum close to 400 nm. The catalyst cross-linked anthracene with ―CH2― bridges and subsequently dehydrogenating them to form quinonoids. Their Fourier transform infrared（FTIr） spectra showed their characteristic quinonoid vibrations between 1600 and 1700 cm-1. The synthesis of polymers was carried out at 30, 40, 50, 60, 70 and 80 ℃, but the quinonoid content of the polymer obtained at 80 ℃ was higher than that of the others. Their scanning electron microscopy（SEM） images showed microspheres of 1 to 5 μm size built with tiny particles. Their surfaces were not smooth. The polymer synthesized at 80 ℃ showed 5.1 wt% CO2 sorption at 25 ℃ and 0.1 MPa, but when it was recross-linked, the CO2 sorption increased to 8 wt%. Hence, hypercross-linked conjugated quinonoid chromophores of anthracene are good for sorption of CO2.

关键词： Anthracene Hypercross-linked polymers CO2 adsorption Friedel-Crafts reaction Quinonoid chromophores

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research progress on carbon dioxide mineralization sequestration technology by tailings

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Green and Smart Mining Engineering 2024年第3期1卷 307-321页

作者： Lijie Guo Xiaopeng Peng Qianqian Wang Yue Zhao Linglin Xu Shan Wu BGrIMM Technology Group Beijing 100160China National centre for International research on Green Metal Mining Beijing 102628China College of Materials Science and Engineering Nanjing Tech UniversityNanjing 211816China Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education School of Materials Science and EngineeringTongji UniversityShanghai 201804China

carbon dioxide capture,utilization,and storage(CCUS)has become a focal point of research for scientists worldwide to address the global warming *** these studies,utilizing mine tailings as CO_(2)mineralization materials has emerged as a new research approach in recent *** study reviews the research progress of using mine tailings for CO_(2)mineralization and *** reaction mechanisms of CO_(2)mineralization using tailings have been introduced ***,ultramafic tailings containing divalent cations,such as Ca^(2+),Mg^(2+),and Fe^(2+),can react with CO_(2)to produce carbonate ***,factors including the size of mineral particles,reaction temperature,and pressure will influence the mineralization reaction *** activation methods of tailings to accelerate mineral carbonation have been *** activation of tailings for mineralization generally includes acid leaching,ammonium salt pH swing,and physical *** developed methods,such as a combination of acid digestion and electrolysis of olivine,have also been ***,the processes and technologies for CO_(2)sequestration through tailings mineralization have been *** in-situ and ex-situ mineral carbonation processes have been *** last part explores the technical approaches of synergistic mineralization and storage of CO_(2)by cemented tailings backfill in underground mined-out areas,which is considered to be one of the key technological pathways for CCUS in the ***,critical technical challenges must still be addressed for this process,including lowcost multiphase CO_(2)storage in backfill plants,synergistic transportation of backfill slurries and CO_(2),and in-situ injection processes of CO_(2)in mined-out stopes to produce suitable carbon curing *** research content of this article can provide valuable insights for studies on the mineralization and storage of CO_(2)using tailings.

关键词： CO_(2)sequestration by tailings CO_(2)storage in mines Mining with backfill carbon fixation with backfill CO_(2)emission control

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