Quantitative Description of Catalysis of Inherent Metallic Species in Lignite Char during CO2 Gasification

Nurulhuda Halim, U. P.M. Ashik, Xiangpeng Gao, Shinji Kudo, Edy Sanwani, Koyo Norinaga, Hayashi Jun-Ichiro

Research output: Contribution to journalArticle

Abstract

Chars from 20 lignite samples were prepared from two types of original lignites by multistage removal of inherent metallic species and subsequent pyrolysis and then were gasified with CO2. A kinetic model, which assumed the progress of noncatalytic and catalytic gasification in parallel, quantitatively described the time-dependent changes in char conversion up to 0.999 for all the chars by employing multicatalytic species having different initial activities and deactivation kinetics. A single piecewise linear function, which followed a nucleation-growth mechanism of the catalysts, showed the relationship between the total concentration of Na, K, Ca, and Fe and the initial total catalytic activity (ICA-2) for the chars. The overall rate of catalyst deactivation (ICD-2) was given by a single linear function of ICA-2 and a factor for the composition of metallic species. This function was also applicable to previously reported ICA-2/ICD-2 relationships for chars from lignite and biomass, showing fast deactivation of Fe catalyst and an important role of Mg in the promotion of catalyst deactivation.

Original languageEnglish
Pages (from-to)5996-6007
Number of pages12
JournalEnergy and Fuels
Volume33
Issue number7
DOIs
Publication statusPublished - Jul 18 2019

Fingerprint

Coal
Independent component analysis
Lignite
Gasification
Catalysis
Catalyst deactivation
Catalysts
Kinetics
Catalyst activity
Biomass
Pyrolysis
Nucleation
Chemical analysis

All Science Journal Classification (ASJC) codes

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

Cite this

Quantitative Description of Catalysis of Inherent Metallic Species in Lignite Char during CO2 Gasification. / Halim, Nurulhuda; Ashik, U. P.M.; Gao, Xiangpeng; Kudo, Shinji; Sanwani, Edy; Norinaga, Koyo; Jun-Ichiro, Hayashi.

In: Energy and Fuels, Vol. 33, No. 7, 18.07.2019, p. 5996-6007.

Research output: Contribution to journalArticle

Halim, Nurulhuda ; Ashik, U. P.M. ; Gao, Xiangpeng ; Kudo, Shinji ; Sanwani, Edy ; Norinaga, Koyo ; Jun-Ichiro, Hayashi. / Quantitative Description of Catalysis of Inherent Metallic Species in Lignite Char during CO2 Gasification. In: Energy and Fuels. 2019 ; Vol. 33, No. 7. pp. 5996-6007.
@article{75c657fb04104c7e8354f4743045df52,
title = "Quantitative Description of Catalysis of Inherent Metallic Species in Lignite Char during CO2 Gasification",
abstract = "Chars from 20 lignite samples were prepared from two types of original lignites by multistage removal of inherent metallic species and subsequent pyrolysis and then were gasified with CO2. A kinetic model, which assumed the progress of noncatalytic and catalytic gasification in parallel, quantitatively described the time-dependent changes in char conversion up to 0.999 for all the chars by employing multicatalytic species having different initial activities and deactivation kinetics. A single piecewise linear function, which followed a nucleation-growth mechanism of the catalysts, showed the relationship between the total concentration of Na, K, Ca, and Fe and the initial total catalytic activity (ICA-2) for the chars. The overall rate of catalyst deactivation (ICD-2) was given by a single linear function of ICA-2 and a factor for the composition of metallic species. This function was also applicable to previously reported ICA-2/ICD-2 relationships for chars from lignite and biomass, showing fast deactivation of Fe catalyst and an important role of Mg in the promotion of catalyst deactivation.",
author = "Nurulhuda Halim and Ashik, {U. P.M.} and Xiangpeng Gao and Shinji Kudo and Edy Sanwani and Koyo Norinaga and Hayashi Jun-Ichiro",
year = "2019",
month = "7",
day = "18",
doi = "10.1021/acs.energyfuels.9b00465",
language = "English",
volume = "33",
pages = "5996--6007",
journal = "Energy & Fuels",
issn = "0887-0624",
publisher = "American Chemical Society",
number = "7",

}

TY - JOUR

T1 - Quantitative Description of Catalysis of Inherent Metallic Species in Lignite Char during CO2 Gasification

AU - Halim, Nurulhuda

AU - Ashik, U. P.M.

AU - Gao, Xiangpeng

AU - Kudo, Shinji

AU - Sanwani, Edy

AU - Norinaga, Koyo

AU - Jun-Ichiro, Hayashi

PY - 2019/7/18

Y1 - 2019/7/18

N2 - Chars from 20 lignite samples were prepared from two types of original lignites by multistage removal of inherent metallic species and subsequent pyrolysis and then were gasified with CO2. A kinetic model, which assumed the progress of noncatalytic and catalytic gasification in parallel, quantitatively described the time-dependent changes in char conversion up to 0.999 for all the chars by employing multicatalytic species having different initial activities and deactivation kinetics. A single piecewise linear function, which followed a nucleation-growth mechanism of the catalysts, showed the relationship between the total concentration of Na, K, Ca, and Fe and the initial total catalytic activity (ICA-2) for the chars. The overall rate of catalyst deactivation (ICD-2) was given by a single linear function of ICA-2 and a factor for the composition of metallic species. This function was also applicable to previously reported ICA-2/ICD-2 relationships for chars from lignite and biomass, showing fast deactivation of Fe catalyst and an important role of Mg in the promotion of catalyst deactivation.

AB - Chars from 20 lignite samples were prepared from two types of original lignites by multistage removal of inherent metallic species and subsequent pyrolysis and then were gasified with CO2. A kinetic model, which assumed the progress of noncatalytic and catalytic gasification in parallel, quantitatively described the time-dependent changes in char conversion up to 0.999 for all the chars by employing multicatalytic species having different initial activities and deactivation kinetics. A single piecewise linear function, which followed a nucleation-growth mechanism of the catalysts, showed the relationship between the total concentration of Na, K, Ca, and Fe and the initial total catalytic activity (ICA-2) for the chars. The overall rate of catalyst deactivation (ICD-2) was given by a single linear function of ICA-2 and a factor for the composition of metallic species. This function was also applicable to previously reported ICA-2/ICD-2 relationships for chars from lignite and biomass, showing fast deactivation of Fe catalyst and an important role of Mg in the promotion of catalyst deactivation.

UR - http://www.scopus.com/inward/record.url?scp=85068152248&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85068152248&partnerID=8YFLogxK

U2 - 10.1021/acs.energyfuels.9b00465

DO - 10.1021/acs.energyfuels.9b00465

M3 - Article

AN - SCOPUS:85068152248

VL - 33

SP - 5996

EP - 6007

JO - Energy & Fuels

JF - Energy & Fuels

SN - 0887-0624

IS - 7

ER -