Activated carbon preparation from lignin by H 3PO 4 activation and its application to gas separation

Y. Sun, G. Yang, J. Zhang, Y. Wang, M. Yao

Research output: Journal PublicationArticlepeer-review

50 Citations (Scopus)

Abstract

Activated carbons were produced from corn straw lignin using H 3PO 4 as activating agent. The optimal activation temperature for producing the largest BET specific surface area and pore volume of carbon was 500°C. The maximum BET specific surface area and pore volume of the resulting carbon were 820m 2g -1 and 0.8cm 3g -1, respectively. The adsorption isotherm model based on the Toth equation together with the Peng-Robinson equation of state for the determination of gas phase fugacity provide a satisfactory representation of high pressure CO 2, CH 4 and N 2 adsorption. The kinetic adsorption results show that the breakthrough difference between CO 2 and CH 4 is not obvious, indicating that its kinetic separation performance is limited.

Original languageEnglish
Pages (from-to)309-316
Number of pages8
JournalChemical Engineering and Technology
Volume35
Issue number2
DOIs
Publication statusPublished - Feb 2012
Externally publishedYes

Keywords

  • Activated carbon
  • Corn straw
  • High pressure
  • Lignin
  • O /CH breakthrough curve

ASJC Scopus subject areas

  • Chemistry (all)
  • Chemical Engineering (all)
  • Industrial and Manufacturing Engineering

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