Catalytic effect of potassium on the rate of char-CO2 gasification

David A. Sams, Farhang Shadman

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

The effect of potassium on the rate of char-CO2 gasification at 800 °C was investigated. The instantaneous rate depends on both catalyst concentration ( K C) and the internal porous structure of the solid. At low values of K C atomic ratio, the rate increases sharply with the addition of catalyst. As catalyst concentration is increased, the rate first levels off and then decreases. The levelling off is attributed to the saturation of the surface with catalytic sites. The subsequent decrease in rate seems to be due to the plugging of micropores by catalyst deposits. The reaction rate changes significantly during gasification and drops sharply before gasification is completed. The drop in rate before total conversion can be explained by catalyst accumulation and pore plugging.

Original languageEnglish (US)
Pages (from-to)880-882
Number of pages3
JournalFuel
Volume62
Issue number8
DOIs
StatePublished - 1983

Fingerprint

Gasification
Potassium
Catalysts
Reaction rates
Deposits

Keywords

  • carbon dioxide
  • catalysis
  • chars
  • gasification
  • potassium

ASJC Scopus subject areas

  • Organic Chemistry
  • Energy Engineering and Power Technology
  • Fuel Technology

Cite this

Catalytic effect of potassium on the rate of char-CO2 gasification. / Sams, David A.; Shadman, Farhang.

In: Fuel, Vol. 62, No. 8, 1983, p. 880-882.

Research output: Contribution to journalArticle

Sams, David A. ; Shadman, Farhang. / Catalytic effect of potassium on the rate of char-CO2 gasification. In: Fuel. 1983 ; Vol. 62, No. 8. pp. 880-882.
@article{b8e885caaa43492287fdf952f946c3de,
title = "Catalytic effect of potassium on the rate of char-CO2 gasification",
abstract = "The effect of potassium on the rate of char-CO2 gasification at 800 °C was investigated. The instantaneous rate depends on both catalyst concentration ( K C) and the internal porous structure of the solid. At low values of K C atomic ratio, the rate increases sharply with the addition of catalyst. As catalyst concentration is increased, the rate first levels off and then decreases. The levelling off is attributed to the saturation of the surface with catalytic sites. The subsequent decrease in rate seems to be due to the plugging of micropores by catalyst deposits. The reaction rate changes significantly during gasification and drops sharply before gasification is completed. The drop in rate before total conversion can be explained by catalyst accumulation and pore plugging.",
keywords = "carbon dioxide, catalysis, chars, gasification, potassium",
author = "Sams, {David A.} and Farhang Shadman",
year = "1983",
doi = "10.1016/0016-2361(83)90153-9",
language = "English (US)",
volume = "62",
pages = "880--882",
journal = "Fuel",
issn = "0016-2361",
publisher = "Elsevier BV",
number = "8",

}

TY - JOUR

T1 - Catalytic effect of potassium on the rate of char-CO2 gasification

AU - Sams, David A.

AU - Shadman, Farhang

PY - 1983

Y1 - 1983

N2 - The effect of potassium on the rate of char-CO2 gasification at 800 °C was investigated. The instantaneous rate depends on both catalyst concentration ( K C) and the internal porous structure of the solid. At low values of K C atomic ratio, the rate increases sharply with the addition of catalyst. As catalyst concentration is increased, the rate first levels off and then decreases. The levelling off is attributed to the saturation of the surface with catalytic sites. The subsequent decrease in rate seems to be due to the plugging of micropores by catalyst deposits. The reaction rate changes significantly during gasification and drops sharply before gasification is completed. The drop in rate before total conversion can be explained by catalyst accumulation and pore plugging.

AB - The effect of potassium on the rate of char-CO2 gasification at 800 °C was investigated. The instantaneous rate depends on both catalyst concentration ( K C) and the internal porous structure of the solid. At low values of K C atomic ratio, the rate increases sharply with the addition of catalyst. As catalyst concentration is increased, the rate first levels off and then decreases. The levelling off is attributed to the saturation of the surface with catalytic sites. The subsequent decrease in rate seems to be due to the plugging of micropores by catalyst deposits. The reaction rate changes significantly during gasification and drops sharply before gasification is completed. The drop in rate before total conversion can be explained by catalyst accumulation and pore plugging.

KW - carbon dioxide

KW - catalysis

KW - chars

KW - gasification

KW - potassium

UR - http://www.scopus.com/inward/record.url?scp=0020800059&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0020800059&partnerID=8YFLogxK

U2 - 10.1016/0016-2361(83)90153-9

DO - 10.1016/0016-2361(83)90153-9

M3 - Article

AN - SCOPUS:0020800059

VL - 62

SP - 880

EP - 882

JO - Fuel

JF - Fuel

SN - 0016-2361

IS - 8

ER -