Preparation of pistachio shell-based porous carbon and its adsorption performance for low concentration CO_(2)  

作　　者：Yuhua Zhang Yanmei Jin Song Li Hong Wu Huijuan Luo 

机构地区：[1]School of Chemistry and Materials Engineering,Liupanshui Normal University,Liupanshui,China [2]Guizhou Province Key Laboratory of Clean Coal Utilization,Liupanshui,China [3]Guizhou Coal Product Quality Supervision&Inspection Institute,Liupanshui,553001,China

出　　处：《Particuology》2024年第12期103-114,共12页颗粒学报（英文版）

基　　金：supported by the Youth Science and Technology Talent Growth Project of Guizhou Provincial Department of Education (grant No.Qianjiaoji[2024]148);the Innovation Team Project of Guizhou Coal Clean Processing and Utilization (grant No.qianheKYzi[2020]027);the Key Laboratory Project of Guizhou Coal Clean Utilization (grant No.qiankehepingtairencai[2020]2001);the Scientific Research Fund for High-level Talents of Liupanshui Normal University (grant No.LPSSYKYJ202301);the Scientific Research Project of Liupanshui Normal University (grant No.LPSSYZDZK202205).

摘　　要：In this study,high-performance porous carbon for CO_(2) adsorption was synthesized from pistachio shells and modified with urea to enrich nitrogen content in the porous structure.The effects of activation temperature,KOH-to-carbon ratio,and urea addition on the pore structure and CO_(2) adsorption capacity of the porous carbon were investigated.Characterization was conducted using N2 adsorption-desorption isotherms,scanning electron microscopy(SEM),X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),and Fourier-transform infrared spectroscopy(FT-IR).Results showed that under preparation conditions of 700℃,KOH-to-carbon ratio of 2,and 15 wt%urea concentration,the synthesized GAC-15-2-700 porous carbon exhibited a maximum specific surface area of 1395 m^(2)/g,micropore volume of 0.505 cm^(3)/g,and N-5 peak area ratio of 65.57%.It achieved a CO_(2) adsorption capacity of 3.56 mmol/g.Nitrogen functional groups on the porous carbon primarily existed as pyridinic N(N-6),pyrrolic/pyridinic N(N-5),and quaternary N(N-Q),with the enriched micropores and high N-5 content being crucial for CO_(2) adsorption.

关 键 词：Pistachio shells Porous carbon CO_(2)adsorption 

分 类 号：O64[理学—物理化学]