title: Lignin-based microporous materials as selective adsorbents for carbon dioxide separation.
abstract: Suitable solid adsorbents are demanded for carbon capture and storage (CCS) processes. In this work, a novel microporous polymer is developed by hypercrosslinking of organosolv lignin, which is a renewable resource. Reaction with formaldehyde dimethyl acetal (FDA) via Friedel-Crafts reaction gives microporous networks, with moderate capacity of carbon dioxide but excellent selectivity towards CO2 /N2 mixture as predicted on the basis of ideal adsorption-solution theory (IAST). Pyrolysis of pure organosolv lignin results in microporous carbon powders, while pyrolysis of hypercrosslinked organosolv lignin yields shape-persistent materials with increased CO2 capacity while maintaining very good selectivity.
authors.affiliation: Max Planck Institute of Colloids and Interfaces, Department of Colloid Chemistry, Science Park Golm, 14424 Potsdam (Germany); Present address: College of Chemistry, Liaoning University, Shenyang 110036 (PR China).
authors.forename: Qing Bo
authors.initials: QB
authors.lastname: Meng
authors.forename: Jens
authors.initials: J
authors.lastname: Weber
mesh_terms: D000327:Adsorption; D002245:Carbon Dioxide / Q000737:chemistry / Q000302:isolation & purification*; D008031:Lignin / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D016062:Porosity
chemical_list: D002245:Carbon Dioxide; D008031:Lignin
keywords: adsorption; carbon capture and storage; microporous materials; polymers; renewable resources