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Catalytic effect of Ca and K on CO2 gasification of spruce wood char

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Catalytic effect of Ca and K on CO2 gasification of spruce wood char. / Perander, M.; DeMartini, N.; Brink, A.; Kramb, J.; Karlström, O.; Hemming, J.; Moilanen, A.; Konttinen, J.; Hupa, M.

In: Fuel, Vol. 150, 15.06.2015, p. 464-472.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

Perander, M, DeMartini, N, Brink, A, Kramb, J, Karlström, O, Hemming, J, Moilanen, A, Konttinen, J & Hupa, M 2015, 'Catalytic effect of Ca and K on CO2 gasification of spruce wood char', Fuel, vol. 150, pp. 464-472. https://doi.org/10.1016/j.fuel.2015.02.062

APA

Perander, M., DeMartini, N., Brink, A., Kramb, J., Karlström, O., Hemming, J., ... Hupa, M. (2015). Catalytic effect of Ca and K on CO2 gasification of spruce wood char. Fuel, 150, 464-472. https://doi.org/10.1016/j.fuel.2015.02.062

Vancouver

Perander M, DeMartini N, Brink A, Kramb J, Karlström O, Hemming J et al. Catalytic effect of Ca and K on CO2 gasification of spruce wood char. Fuel. 2015 Jun 15;150:464-472. https://doi.org/10.1016/j.fuel.2015.02.062

Author

Perander, M. ; DeMartini, N. ; Brink, A. ; Kramb, J. ; Karlström, O. ; Hemming, J. ; Moilanen, A. ; Konttinen, J. ; Hupa, M. / Catalytic effect of Ca and K on CO2 gasification of spruce wood char. In: Fuel. 2015 ; Vol. 150. pp. 464-472.

Bibtex - Download

@article{b5c29357c48944389de64dff2ff544f7,
title = "Catalytic effect of Ca and K on CO2 gasification of spruce wood char",
abstract = "Gasification is one route to produce chemicals and liquid fuels from biomass. The gasification of the char is catalyzed by alkali and alkaline earth metals in the biomass. In this work the catalytic effect of calcium (Ca) and potassium (K) on CO2 gasification of spruce wood was studied using a thermo gravimetric analyzer (TGA). The ash-forming elements were first removed from the wood using an acid leaching method. Then, various concentrations of K and Ca were absorbed to the wood by ion-exchange to carboxylic and phenolic groups, impregnation of K2CO3 or physically mixing of CaC2O4. The prepared spruce samples were placed in a mesh holder and gasified in the TGA at 850°C in 100{\%} CO2. The results demonstrate that the gasification rate of the char increased linearly with an increase in the concentration of Ca or K. Crystalline CaC2O4 distributed only at the surface of the wood particles resulted in low catalytic activity. The catalytic activity of Ca was higher than K in the beginning of char gasification but the catalytic effect of Ca decreased earlier than the catalytic effect of potassium. Further, the char structure was investigated by SEM-EDX. The SEM analysis from interrupted gasification experiments showed the formation of CaCO3 and K2CO3 layer on the char surface. By adding corresponding levels of Ca and K as the original spruce to the acid washed sample, a similar gasification reactivity was obtained at 850 °C.",
keywords = "Biomass, Calcium, Char reactivity, CO, Gasification, Potassium",
author = "M. Perander and N. DeMartini and A. Brink and J. Kramb and O. Karlstr{\"o}m and J. Hemming and A. Moilanen and J. Konttinen and M. Hupa",
note = "EXT={"}Kramb, J.{"}",
year = "2015",
month = "6",
day = "15",
doi = "10.1016/j.fuel.2015.02.062",
language = "English",
volume = "150",
pages = "464--472",
journal = "Fuel",
issn = "0016-2361",
publisher = "ELSEVIER SCI LTD",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Catalytic effect of Ca and K on CO2 gasification of spruce wood char

AU - Perander, M.

AU - DeMartini, N.

AU - Brink, A.

AU - Kramb, J.

AU - Karlström, O.

AU - Hemming, J.

AU - Moilanen, A.

AU - Konttinen, J.

AU - Hupa, M.

N1 - EXT="Kramb, J."

PY - 2015/6/15

Y1 - 2015/6/15

N2 - Gasification is one route to produce chemicals and liquid fuels from biomass. The gasification of the char is catalyzed by alkali and alkaline earth metals in the biomass. In this work the catalytic effect of calcium (Ca) and potassium (K) on CO2 gasification of spruce wood was studied using a thermo gravimetric analyzer (TGA). The ash-forming elements were first removed from the wood using an acid leaching method. Then, various concentrations of K and Ca were absorbed to the wood by ion-exchange to carboxylic and phenolic groups, impregnation of K2CO3 or physically mixing of CaC2O4. The prepared spruce samples were placed in a mesh holder and gasified in the TGA at 850°C in 100% CO2. The results demonstrate that the gasification rate of the char increased linearly with an increase in the concentration of Ca or K. Crystalline CaC2O4 distributed only at the surface of the wood particles resulted in low catalytic activity. The catalytic activity of Ca was higher than K in the beginning of char gasification but the catalytic effect of Ca decreased earlier than the catalytic effect of potassium. Further, the char structure was investigated by SEM-EDX. The SEM analysis from interrupted gasification experiments showed the formation of CaCO3 and K2CO3 layer on the char surface. By adding corresponding levels of Ca and K as the original spruce to the acid washed sample, a similar gasification reactivity was obtained at 850 °C.

AB - Gasification is one route to produce chemicals and liquid fuels from biomass. The gasification of the char is catalyzed by alkali and alkaline earth metals in the biomass. In this work the catalytic effect of calcium (Ca) and potassium (K) on CO2 gasification of spruce wood was studied using a thermo gravimetric analyzer (TGA). The ash-forming elements were first removed from the wood using an acid leaching method. Then, various concentrations of K and Ca were absorbed to the wood by ion-exchange to carboxylic and phenolic groups, impregnation of K2CO3 or physically mixing of CaC2O4. The prepared spruce samples were placed in a mesh holder and gasified in the TGA at 850°C in 100% CO2. The results demonstrate that the gasification rate of the char increased linearly with an increase in the concentration of Ca or K. Crystalline CaC2O4 distributed only at the surface of the wood particles resulted in low catalytic activity. The catalytic activity of Ca was higher than K in the beginning of char gasification but the catalytic effect of Ca decreased earlier than the catalytic effect of potassium. Further, the char structure was investigated by SEM-EDX. The SEM analysis from interrupted gasification experiments showed the formation of CaCO3 and K2CO3 layer on the char surface. By adding corresponding levels of Ca and K as the original spruce to the acid washed sample, a similar gasification reactivity was obtained at 850 °C.

KW - Biomass

KW - Calcium

KW - Char reactivity

KW - CO

KW - Gasification

KW - Potassium

UR - http://www.scopus.com/inward/record.url?scp=84924100908&partnerID=8YFLogxK

U2 - 10.1016/j.fuel.2015.02.062

DO - 10.1016/j.fuel.2015.02.062

M3 - Article

VL - 150

SP - 464

EP - 472

JO - Fuel

JF - Fuel

SN - 0016-2361

ER -