Efficient upgrading of pyrolysis bio-oil over Ni-based catalysts in supercritical ethanol

Jin Hyuk Lee; In Gu Lee; Ji Yeon Park; Kwan Young Lee

doi:10.1016/j.fuel.2018.12.025

Efficient upgrading of pyrolysis bio-oil over Ni-based catalysts in supercritical ethanol

Jin Hyuk Lee, In Gu Lee, Ji Yeon Park, Kwan Young Lee

Research output: Contribution to journal › Article › peer-review

42 Citations (Scopus)

Abstract

An efficient method to upgrade bio-oil derived from fast pyrolysis of woody biomass was investigated in supercritical ethanol without external hydrogen supply. A set of Ni-based catalysts (Ni, Ni-Mo, and Mg-Ni-Mo) supported on activated charcoal (AC) was tested to understand their catalytic effect on the yield and the quality of upgraded liquid fuel in supercritical ethanol. Mg-Ni-Mo/AC was found to be the most effective catalyst among the tested Ni-based catalysts; the liquid product obtained at 350 °C showed the highest yield (70.5 wt%) and the lowest oxygen-to-carbon (O/C) molar ratio (0.19). The catalyst also formed the lowest amount of solid product (9.8 wt%) at 350 °C by suppressing coke formation. At 350 °C, a higher quality liquid product with a total acid number (TAN) value of 6.2 mgKOHg⁻¹ and a higher heating value (HHV) of 33.4 MJkg⁻¹ was obtained compared with bio-oil feed (TAN: 48.0 mgKOHg⁻¹ and HHV: 19.5 MJkg⁻¹). A gas chromatography–mass spectrometer (GC–MS) analysis of the liquid product demonstrated that major oxygenated components in the bio-oil feed such as acids, aldehydes, and levoglucosan were effectively destroyed through hydrogenation, esterification, and deoxygenation reactions in the catalytic upgrading process.

Original language	English
Pages (from-to)	207-217
Number of pages	11
Journal	Fuel
Volume	241
DOIs	https://doi.org/10.1016/j.fuel.2018.12.025
Publication status	Published - 2019 Apr 1

Bibliographical note

Funding Information:
This work was funded by the National Research Council of Science & Technology grant (NST) by the Korea government ( MSIP ) (No. CAP-16-05-KIMM ). This work was also supported by the Waste-to-Energy Technology Development Program of Korea Environment Industry & Technology Institute, grandted financial resource from the Ministry of Environment , Republic of Korea (No. 2018001580001 ).

Funding Information:
This work was funded by the National Research Council of Science & Technology grant (NST) by the Korea government (MSIP) (No. CAP-16-05-KIMM). This work was also supported by the Waste-to-Energy Technology Development Program of Korea Environment Industry & Technology Institute, grandted financial resource from the Ministry of Environment, Republic of Korea (No. 2018001580001).

Publisher Copyright:
© 2018 Elsevier Ltd

Keywords

Bio-oil
Ni-based catalysts
Reaction parameters
Supercritical ethanol
Upgrading

ASJC Scopus subject areas

General Chemical Engineering
Fuel Technology
Energy Engineering and Power Technology
Organic Chemistry

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10.1016/j.fuel.2018.12.025

Cite this

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title = "Efficient upgrading of pyrolysis bio-oil over Ni-based catalysts in supercritical ethanol",

abstract = "An efficient method to upgrade bio-oil derived from fast pyrolysis of woody biomass was investigated in supercritical ethanol without external hydrogen supply. A set of Ni-based catalysts (Ni, Ni-Mo, and Mg-Ni-Mo) supported on activated charcoal (AC) was tested to understand their catalytic effect on the yield and the quality of upgraded liquid fuel in supercritical ethanol. Mg-Ni-Mo/AC was found to be the most effective catalyst among the tested Ni-based catalysts; the liquid product obtained at 350 °C showed the highest yield (70.5 wt%) and the lowest oxygen-to-carbon (O/C) molar ratio (0.19). The catalyst also formed the lowest amount of solid product (9.8 wt%) at 350 °C by suppressing coke formation. At 350 °C, a higher quality liquid product with a total acid number (TAN) value of 6.2 mgKOHg−1 and a higher heating value (HHV) of 33.4 MJkg−1 was obtained compared with bio-oil feed (TAN: 48.0 mgKOHg−1 and HHV: 19.5 MJkg−1). A gas chromatography–mass spectrometer (GC–MS) analysis of the liquid product demonstrated that major oxygenated components in the bio-oil feed such as acids, aldehydes, and levoglucosan were effectively destroyed through hydrogenation, esterification, and deoxygenation reactions in the catalytic upgrading process.",

keywords = "Bio-oil, Ni-based catalysts, Reaction parameters, Supercritical ethanol, Upgrading",

author = "Lee, {Jin Hyuk} and Lee, {In Gu} and Park, {Ji Yeon} and Lee, {Kwan Young}",

note = "Funding Information: This work was funded by the National Research Council of Science & Technology grant (NST) by the Korea government ( MSIP ) (No. CAP-16-05-KIMM ). This work was also supported by the Waste-to-Energy Technology Development Program of Korea Environment Industry & Technology Institute, grandted financial resource from the Ministry of Environment , Republic of Korea (No. 2018001580001 ). Funding Information: This work was funded by the National Research Council of Science & Technology grant (NST) by the Korea government (MSIP) (No. CAP-16-05-KIMM). This work was also supported by the Waste-to-Energy Technology Development Program of Korea Environment Industry & Technology Institute, grandted financial resource from the Ministry of Environment, Republic of Korea (No. 2018001580001). Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2019",

month = apr,

day = "1",

doi = "10.1016/j.fuel.2018.12.025",

language = "English",

volume = "241",

pages = "207--217",

journal = "Fuel",

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AU - Lee, Jin Hyuk

AU - Lee, In Gu

AU - Park, Ji Yeon

AU - Lee, Kwan Young

N1 - Funding Information: This work was funded by the National Research Council of Science & Technology grant (NST) by the Korea government ( MSIP ) (No. CAP-16-05-KIMM ). This work was also supported by the Waste-to-Energy Technology Development Program of Korea Environment Industry & Technology Institute, grandted financial resource from the Ministry of Environment , Republic of Korea (No. 2018001580001 ). Funding Information: This work was funded by the National Research Council of Science & Technology grant (NST) by the Korea government (MSIP) (No. CAP-16-05-KIMM). This work was also supported by the Waste-to-Energy Technology Development Program of Korea Environment Industry & Technology Institute, grandted financial resource from the Ministry of Environment, Republic of Korea (No. 2018001580001). Publisher Copyright: © 2018 Elsevier Ltd

PY - 2019/4/1

Y1 - 2019/4/1

N2 - An efficient method to upgrade bio-oil derived from fast pyrolysis of woody biomass was investigated in supercritical ethanol without external hydrogen supply. A set of Ni-based catalysts (Ni, Ni-Mo, and Mg-Ni-Mo) supported on activated charcoal (AC) was tested to understand their catalytic effect on the yield and the quality of upgraded liquid fuel in supercritical ethanol. Mg-Ni-Mo/AC was found to be the most effective catalyst among the tested Ni-based catalysts; the liquid product obtained at 350 °C showed the highest yield (70.5 wt%) and the lowest oxygen-to-carbon (O/C) molar ratio (0.19). The catalyst also formed the lowest amount of solid product (9.8 wt%) at 350 °C by suppressing coke formation. At 350 °C, a higher quality liquid product with a total acid number (TAN) value of 6.2 mgKOHg−1 and a higher heating value (HHV) of 33.4 MJkg−1 was obtained compared with bio-oil feed (TAN: 48.0 mgKOHg−1 and HHV: 19.5 MJkg−1). A gas chromatography–mass spectrometer (GC–MS) analysis of the liquid product demonstrated that major oxygenated components in the bio-oil feed such as acids, aldehydes, and levoglucosan were effectively destroyed through hydrogenation, esterification, and deoxygenation reactions in the catalytic upgrading process.

AB - An efficient method to upgrade bio-oil derived from fast pyrolysis of woody biomass was investigated in supercritical ethanol without external hydrogen supply. A set of Ni-based catalysts (Ni, Ni-Mo, and Mg-Ni-Mo) supported on activated charcoal (AC) was tested to understand their catalytic effect on the yield and the quality of upgraded liquid fuel in supercritical ethanol. Mg-Ni-Mo/AC was found to be the most effective catalyst among the tested Ni-based catalysts; the liquid product obtained at 350 °C showed the highest yield (70.5 wt%) and the lowest oxygen-to-carbon (O/C) molar ratio (0.19). The catalyst also formed the lowest amount of solid product (9.8 wt%) at 350 °C by suppressing coke formation. At 350 °C, a higher quality liquid product with a total acid number (TAN) value of 6.2 mgKOHg−1 and a higher heating value (HHV) of 33.4 MJkg−1 was obtained compared with bio-oil feed (TAN: 48.0 mgKOHg−1 and HHV: 19.5 MJkg−1). A gas chromatography–mass spectrometer (GC–MS) analysis of the liquid product demonstrated that major oxygenated components in the bio-oil feed such as acids, aldehydes, and levoglucosan were effectively destroyed through hydrogenation, esterification, and deoxygenation reactions in the catalytic upgrading process.

KW - Bio-oil

KW - Ni-based catalysts

KW - Reaction parameters

KW - Supercritical ethanol

KW - Upgrading

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DO - 10.1016/j.fuel.2018.12.025

M3 - Article

AN - SCOPUS:85058379549

SN - 0016-2361

VL - 241

SP - 207

EP - 217

JO - Fuel

JF - Fuel

ER -

Efficient upgrading of pyrolysis bio-oil over Ni-based catalysts in supercritical ethanol

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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