Abstract
This paper presents a simple stability test method based on changes in carbonyl compounds. Whereas the method of identifying carbonyl groups by means of titration is in itself well-known, its use in determining the stability of fast pyrolysis bio-oils has previously not been established. Pyrolysis oil stability is typically measured as viscosity increase under specified conditions. The increase in viscosity occurs due to an increase in the amount and molecular weight of water insolubles present in the oil. The change in carbonyl compounds is due to reactions of aldehydes and ketones during storage, the reaction products of which end up in the water-insoluble fraction. This paper shows that the carbonyl titration method, based on changes in aldehydes and ketones, correlates with the viscosity increase-based stability test and that, due to this clear correlation, both methods can be used and comparison between the methods is possible.
| Original language | English |
|---|---|
| Pages (from-to) | 3307-3313 |
| Number of pages | 7 |
| Journal | Energy & Fuels |
| Volume | 25 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 21 Jul 2011 |
| MoE publication type | A1 Journal article-refereed |
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An approach for stability measurement of wood-based fast pyrolysis bio-oils. / Oasmaa, Anja; Korhonen, Jaana; Kuoppala, Eeva.
In: Energy & Fuels, Vol. 25, No. 7, 21.07.2011, p. 3307-3313.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - An approach for stability measurement of wood-based fast pyrolysis bio-oils
AU - Oasmaa, Anja
AU - Korhonen, Jaana
AU - Kuoppala, Eeva
PY - 2011/7/21
Y1 - 2011/7/21
N2 - This paper presents a simple stability test method based on changes in carbonyl compounds. Whereas the method of identifying carbonyl groups by means of titration is in itself well-known, its use in determining the stability of fast pyrolysis bio-oils has previously not been established. Pyrolysis oil stability is typically measured as viscosity increase under specified conditions. The increase in viscosity occurs due to an increase in the amount and molecular weight of water insolubles present in the oil. The change in carbonyl compounds is due to reactions of aldehydes and ketones during storage, the reaction products of which end up in the water-insoluble fraction. This paper shows that the carbonyl titration method, based on changes in aldehydes and ketones, correlates with the viscosity increase-based stability test and that, due to this clear correlation, both methods can be used and comparison between the methods is possible.
AB - This paper presents a simple stability test method based on changes in carbonyl compounds. Whereas the method of identifying carbonyl groups by means of titration is in itself well-known, its use in determining the stability of fast pyrolysis bio-oils has previously not been established. Pyrolysis oil stability is typically measured as viscosity increase under specified conditions. The increase in viscosity occurs due to an increase in the amount and molecular weight of water insolubles present in the oil. The change in carbonyl compounds is due to reactions of aldehydes and ketones during storage, the reaction products of which end up in the water-insoluble fraction. This paper shows that the carbonyl titration method, based on changes in aldehydes and ketones, correlates with the viscosity increase-based stability test and that, due to this clear correlation, both methods can be used and comparison between the methods is possible.
UR - http://www.scopus.com/inward/record.url?scp=79960571369&partnerID=8YFLogxK
U2 - 10.1021/ef2006673
DO - 10.1021/ef2006673
M3 - Article
VL - 25
SP - 3307
EP - 3313
JO - Energy & Fuels
JF - Energy & Fuels
SN - 0887-0624
IS - 7
ER -