Pyrolysis of sulfonic acid substituted benzenes and investigation of CO2 capture capability of resulting carbons


ZAMAN A. C.

JOURNAL OF SOLID STATE CHEMISTRY, vol.303, 2021 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 303
  • Publication Date: 2021
  • Doi Number: 10.1016/j.jssc.2021.122546
  • Journal Name: JOURNAL OF SOLID STATE CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded, Scopus, Academic Search Premier, PASCAL, Chemical Abstracts Core, Chimica, Compendex, INSPEC, Metadex
  • Keywords: CO2 capture, Sulfur doped carbon, Ultramicroporous, Substituted benzene, Molecular precursor, METAL-ORGANIC FRAMEWORKS, ACTIVATED CARBON, MESOPOROUS CARBON, DOPED CARBONS, PORE-SIZE, MICROPOROUS CARBONS, SURFACE-CHEMISTRY, AMORPHOUS-CARBON, DIOXIDE CAPTURE, ISOSTERIC HEATS

Abstract

Aromatic organic compounds: 5-sulfosalicylic acid (SSA) and p-toluenesulfonic acid (TsOH) were used to prepare sulfur doped ultramicropore (pores smaller than 0.7 nm) containing carbons by pyrolysis under Argon atmosphere. SSA derived carbon processed at 1000 degrees C showed the best CO2 (carbon dioxide) adsorption performance. CO2 sorption capacity of SSA1000 is 3.91 mmol g(-1)at 1 bar at 273 K and 2.88 mmol g(-1)at 1 bar at 298 K. Remarkably, at typical flue gas conditions (0.15 bar@298 K) SSA1000 takes up 0.95 mmol g(-1) CO2. SSA1000 possessed good gas sorption properties, recyclability for regeneration, and Ideal Adsorbed Solution Theory (IAST)based selectivity of 14.7 (1 bar, CO2/N-2:0.15/0.85). This work shows the possibility of production of ultramicropore containing sulfur and oxygen doped carbons exhibiting high CO2 uptake capability via simple pyrolysis method from molecular precursors.