Novel and efficient flexible carbon sieves for landfill gas and biogas upgrading are developed. Various carbon cloths and activated ones have been developed from different carbon precursors (cotton, viscose rayon and blend furniture textiles). In order to enhance the charring effect and nitrogen elements doping, the polypyrrole nanoparticles (PNP) were decorated on the textile fabrics before carbonization, and activation process producing a flexible double sieve. In case of the viscose rayon cloth, a chitosan layer was additionally coated and carbonized, resulting in a double carbon sieve with unique morphology and rich with nitrogen. These developed flexible porous carbons were investigated for CO₂ uptake and separation in terms of the influence of textile fabric (carbon precursor) type, texture structure, composition and synthesis procedure. The highest textural properties of 1812 m² g⁻¹ specific surface area and 0.761 cm³ g⁻¹ of total specific pore volume with rich nitrogen and oxygen elemental composition have been achieved. Enhanced and selective adsorption of CO₂ over CH₄ was exhibited by the flexible sieve developed for natural gas upgrading application, which also exhibited CO₂/CH₄ selectivity of 8.6 and 17.1 (50:50) at 298 K and 1 and 20 bar, respectively, which is highest among the reported activated carbon cloths and porous materials.

开发了用于垃圾填埋气和沼气升级的新型高效柔性碳筛。已经从不同的碳前体（棉，粘胶人造丝和混纺家具纺织品）开发出各种碳布和活性碳布。为了增强炭化效果和氮元素掺杂，在碳化前，在织物上装饰了聚吡咯纳米颗粒（PNP），并进行了活化处理，形成了柔性双筛。在粘胶人造丝布的情况下，壳聚糖层被另外涂覆和碳化，从而得到具有独特形态和富含氮的双碳筛。研究了这些开发的柔性多孔碳的CO ₂含量根据织物（碳前驱体）类型，质地结构，组成和合成程序的影响吸收和分离。获得了具有丰富的氮和氧元素组成的最高的织构特性，其比表面积为1812 m ² g ^-1和总比孔体积为0.761 cm ³ g ^-1。为天然气改质应用开发的柔性筛网表现出对CH ₄增强的CO ₂选择性吸附，并且还表现出CO ₂ / CH ₄ 在298 K和1和20 bar下的选择性分别为8.6和17.1（50:50），在报道的活性炭布和多孔材料中最高。