The catalytic effect of lignite-CO2 gasification with K2CO3, alkali earth and transition metal salts as catalytic additives

Seok Jin Seo; So Jung Lee; Jung Min Sohn

doi:10.1063/1.4896660

The catalytic effect of lignite-CO₂ gasification with K₂CO₃, alkali earth and transition metal salts as catalytic additives

Seok Jin Seo^*
, So Jung Lee
, Jung Min Sohn

^*Corresponding author for this work

Major of Mineral Resources and Energy Engineering

Jeonbuk National University

Research output: Contribution to journal › Journal article › peer-review

10 Scopus citations

Abstract

In this study, the catalytic effects of impregnated catalysts of K₂CO₃, alkali earth, and transition metal salts in lignite-CO₂ gasification were investigated. The gasification experiments were conducted over a temperature range of 800-900 °C at atmospheric pressure. Catalysts such as K₂CO₃, Ca(OH)₂, CaCO₃, Ce(NO₃)_3, and Fe(NO₃)₃ were impregnated on Mongolia coal using aqueous solutions in a rotary evaporator. The modified volumetric reaction model of the gas-solid reaction was applied to the experimental data to obtain kinetic information. The catalytic activity of single catalysts followed the sequence K₂CO₃ > Ca(OH)₂ > CaCO₃ > Fe(NO₃)₃ ≈ Ce(NO₃)₃. The reaction rate with K₂CO₃ can be enhanced by the addition of Ca(OH)₂. The synergistic effect of K₂CO₃ 4 wt. % + Ca(OH)₂ 1 wt. % exhibited the highest catalytic activity at 900 °C and the lowest activation energy.

Original language	English
Article number	053109
Journal	Journal of Renewable and Sustainable Energy
Volume	6
Issue number	5
DOIs	https://doi.org/10.1063/1.4896660
State	Published - 2014.09.1

Quacquarelli Symonds(QS) Subject Topics

Engineering - Electrical & Electronic

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title = "The catalytic effect of lignite-CO2 gasification with K2CO3, alkali earth and transition metal salts as catalytic additives",

abstract = "In this study, the catalytic effects of impregnated catalysts of K2CO3, alkali earth, and transition metal salts in lignite-CO2 gasification were investigated. The gasification experiments were conducted over a temperature range of 800-900 °C at atmospheric pressure. Catalysts such as K2CO3, Ca(OH)2, CaCO3, Ce(NO3)3, and Fe(NO3)3 were impregnated on Mongolia coal using aqueous solutions in a rotary evaporator. The modified volumetric reaction model of the gas-solid reaction was applied to the experimental data to obtain kinetic information. The catalytic activity of single catalysts followed the sequence K2CO3 > Ca(OH)2 > CaCO3 > Fe(NO3)3 ≈ Ce(NO3)3. The reaction rate with K2CO3 can be enhanced by the addition of Ca(OH)2. The synergistic effect of K2CO3 4 wt. \% + Ca(OH)2 1 wt. \% exhibited the highest catalytic activity at 900 °C and the lowest activation energy.",

author = "Seo, \{Seok Jin\} and Lee, \{So Jung\} and Sohn, \{Jung Min\}",

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T1 - The catalytic effect of lignite-CO2 gasification with K2CO3, alkali earth and transition metal salts as catalytic additives

AU - Seo, Seok Jin

AU - Lee, So Jung

AU - Sohn, Jung Min

PY - 2014/9/1

Y1 - 2014/9/1

N2 - In this study, the catalytic effects of impregnated catalysts of K2CO3, alkali earth, and transition metal salts in lignite-CO2 gasification were investigated. The gasification experiments were conducted over a temperature range of 800-900 °C at atmospheric pressure. Catalysts such as K2CO3, Ca(OH)2, CaCO3, Ce(NO3)3, and Fe(NO3)3 were impregnated on Mongolia coal using aqueous solutions in a rotary evaporator. The modified volumetric reaction model of the gas-solid reaction was applied to the experimental data to obtain kinetic information. The catalytic activity of single catalysts followed the sequence K2CO3 > Ca(OH)2 > CaCO3 > Fe(NO3)3 ≈ Ce(NO3)3. The reaction rate with K2CO3 can be enhanced by the addition of Ca(OH)2. The synergistic effect of K2CO3 4 wt. % + Ca(OH)2 1 wt. % exhibited the highest catalytic activity at 900 °C and the lowest activation energy.

AB - In this study, the catalytic effects of impregnated catalysts of K2CO3, alkali earth, and transition metal salts in lignite-CO2 gasification were investigated. The gasification experiments were conducted over a temperature range of 800-900 °C at atmospheric pressure. Catalysts such as K2CO3, Ca(OH)2, CaCO3, Ce(NO3)3, and Fe(NO3)3 were impregnated on Mongolia coal using aqueous solutions in a rotary evaporator. The modified volumetric reaction model of the gas-solid reaction was applied to the experimental data to obtain kinetic information. The catalytic activity of single catalysts followed the sequence K2CO3 > Ca(OH)2 > CaCO3 > Fe(NO3)3 ≈ Ce(NO3)3. The reaction rate with K2CO3 can be enhanced by the addition of Ca(OH)2. The synergistic effect of K2CO3 4 wt. % + Ca(OH)2 1 wt. % exhibited the highest catalytic activity at 900 °C and the lowest activation energy.

UR - https://www.scopus.com/pages/publications/84907494233

U2 - 10.1063/1.4896660

DO - 10.1063/1.4896660

M3 - Journal article

AN - SCOPUS:84907494233

SN - 1941-7012

VL - 6

JO - Journal of Renewable and Sustainable Energy

JF - Journal of Renewable and Sustainable Energy

IS - 5

M1 - 053109

ER -

The catalytic effect of lignite-CO₂ gasification with K₂CO₃, alkali earth and transition metal salts as catalytic additives

Abstract

Quacquarelli Symonds(QS) Subject Topics

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