Environmental scanning electron microscopy of activated carbon production from anthracite by one-step pyrolysis-activation

Katia Gergova, Semih Eser, Harold H. Schobert, Maria Klimkiewicz, Paul W. Brown

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Experiments were carried out to produce activated carbons from anthracite using one-step steam pyrolysis-activation. Environmental scanning electron microscopy (ESEM) was used to observe the porosity development in real time. The anthracite samples were heated in different gas atmospheres before steam activation. The ESEM observations showed that the activation agent had a significant effect on the porosity of activated carbon produced from anthracite. The activated carbon produced by steam activation at 850°C for 6 h had the highest surface area and a well-developed porous structure. Substantial activation of anthracite surfaces and formation of extensive porosity occurred under the same conditions but with steam at 270 Pa instead of atmospheric pressure. Air treatment at 300°C for 3 h before steam activation also led to production of activated carbon with well-developed porosity. An important advantage of the activated anthracites produced in this study is their microporous structure with a considerable fraction of pores of molecular dimensions. This indicates that molecular sieve materials can be producted from Pennsylvania anthracite by one-step pyrolysis-activation under appropriate conditions.

Original languageEnglish (US)
Pages (from-to)1042-1048
Number of pages7
JournalFuel
Volume74
Issue number7
DOIs
StatePublished - Jul 1995

Fingerprint

Anthracite
Coal
Activated carbon
Pyrolysis
Steam
Chemical activation
Scanning electron microscopy
Porosity
Molecular sieves
Atmospheric pressure
Gases
Air

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Organic Chemistry

Cite this

Gergova, Katia ; Eser, Semih ; Schobert, Harold H. ; Klimkiewicz, Maria ; Brown, Paul W. / Environmental scanning electron microscopy of activated carbon production from anthracite by one-step pyrolysis-activation. In: Fuel. 1995 ; Vol. 74, No. 7. pp. 1042-1048.
@article{485f5f4ba922472c999d6aeefa35e24b,
title = "Environmental scanning electron microscopy of activated carbon production from anthracite by one-step pyrolysis-activation",
abstract = "Experiments were carried out to produce activated carbons from anthracite using one-step steam pyrolysis-activation. Environmental scanning electron microscopy (ESEM) was used to observe the porosity development in real time. The anthracite samples were heated in different gas atmospheres before steam activation. The ESEM observations showed that the activation agent had a significant effect on the porosity of activated carbon produced from anthracite. The activated carbon produced by steam activation at 850°C for 6 h had the highest surface area and a well-developed porous structure. Substantial activation of anthracite surfaces and formation of extensive porosity occurred under the same conditions but with steam at 270 Pa instead of atmospheric pressure. Air treatment at 300°C for 3 h before steam activation also led to production of activated carbon with well-developed porosity. An important advantage of the activated anthracites produced in this study is their microporous structure with a considerable fraction of pores of molecular dimensions. This indicates that molecular sieve materials can be producted from Pennsylvania anthracite by one-step pyrolysis-activation under appropriate conditions.",
author = "Katia Gergova and Semih Eser and Schobert, {Harold H.} and Maria Klimkiewicz and Brown, {Paul W.}",
year = "1995",
month = "7",
doi = "10.1016/0016-2361(95)00052-7",
language = "English (US)",
volume = "74",
pages = "1042--1048",
journal = "Fuel",
issn = "0016-2361",
publisher = "Elsevier BV",
number = "7",

}

Environmental scanning electron microscopy of activated carbon production from anthracite by one-step pyrolysis-activation. / Gergova, Katia; Eser, Semih; Schobert, Harold H.; Klimkiewicz, Maria; Brown, Paul W.

In: Fuel, Vol. 74, No. 7, 07.1995, p. 1042-1048.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Environmental scanning electron microscopy of activated carbon production from anthracite by one-step pyrolysis-activation

AU - Gergova, Katia

AU - Eser, Semih

AU - Schobert, Harold H.

AU - Klimkiewicz, Maria

AU - Brown, Paul W.

PY - 1995/7

Y1 - 1995/7

N2 - Experiments were carried out to produce activated carbons from anthracite using one-step steam pyrolysis-activation. Environmental scanning electron microscopy (ESEM) was used to observe the porosity development in real time. The anthracite samples were heated in different gas atmospheres before steam activation. The ESEM observations showed that the activation agent had a significant effect on the porosity of activated carbon produced from anthracite. The activated carbon produced by steam activation at 850°C for 6 h had the highest surface area and a well-developed porous structure. Substantial activation of anthracite surfaces and formation of extensive porosity occurred under the same conditions but with steam at 270 Pa instead of atmospheric pressure. Air treatment at 300°C for 3 h before steam activation also led to production of activated carbon with well-developed porosity. An important advantage of the activated anthracites produced in this study is their microporous structure with a considerable fraction of pores of molecular dimensions. This indicates that molecular sieve materials can be producted from Pennsylvania anthracite by one-step pyrolysis-activation under appropriate conditions.

AB - Experiments were carried out to produce activated carbons from anthracite using one-step steam pyrolysis-activation. Environmental scanning electron microscopy (ESEM) was used to observe the porosity development in real time. The anthracite samples were heated in different gas atmospheres before steam activation. The ESEM observations showed that the activation agent had a significant effect on the porosity of activated carbon produced from anthracite. The activated carbon produced by steam activation at 850°C for 6 h had the highest surface area and a well-developed porous structure. Substantial activation of anthracite surfaces and formation of extensive porosity occurred under the same conditions but with steam at 270 Pa instead of atmospheric pressure. Air treatment at 300°C for 3 h before steam activation also led to production of activated carbon with well-developed porosity. An important advantage of the activated anthracites produced in this study is their microporous structure with a considerable fraction of pores of molecular dimensions. This indicates that molecular sieve materials can be producted from Pennsylvania anthracite by one-step pyrolysis-activation under appropriate conditions.

UR - http://www.scopus.com/inward/record.url?scp=0029345212&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0029345212&partnerID=8YFLogxK

U2 - 10.1016/0016-2361(95)00052-7

DO - 10.1016/0016-2361(95)00052-7

M3 - Article

AN - SCOPUS:0029345212

VL - 74

SP - 1042

EP - 1048

JO - Fuel

JF - Fuel

SN - 0016-2361

IS - 7

ER -