Sulfur-Doped Millimeter-Sized Microporous Activated Carbon Spheres Derived from Sulfonated Poly(styrene–divinylbenzene) for CO2 Capture

摘要: Millimeter-sized activated carbon spheres are potential candidates for industrial-scale CO2 capture. sulfur-doped microporous were synthesized from poly(styrene–divinylbenzene), a very cheap and easily operated resin product, in the present work studied uptake. A series of spherical materials yielded through sulfonation, oxidation, carbonization, KOH activation polymer precursors. In addition to promoting cross-linking molecules, sulfonic substituents directly introduced sulfur functional groups into after pyrolysis. The SCS-700 sample showed best adsorption performance, whose content reached 0.69 wt %, exhibited high surface area 1526 m2 g–1 large pore volume 0.726 cm3 g–1. adsorbent uptake at both 25 °C (4.21 mmol g–1) 50 (2.54 under ambient pressure due its abundant ultramicropores pr...