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

doi:10.1002/ceat.201100309

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 Publication › Article › peer-review

61 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 language	English
Pages (from-to)	309-316
Number of pages	8
Journal	Chemical Engineering and Technology
Volume	35
Issue number	2
DOIs	https://doi.org/10.1002/ceat.201100309
Publication status	Published - Feb 2012
Externally published	Yes

Keywords

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

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

Access to Document

10.1002/ceat.201100309

Cite this

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

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.",

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AU - Sun, Y.

AU - Yang, G.

AU - Zhang, J.

AU - Wang, Y.

AU - Yao, M.

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AB - 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.

KW - Activated carbon

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KW - O /CH breakthrough curve

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