<i>In-situ </i>catalytic pyrolysis of pine powder by ZnCl<sub>2</sub> to bio-oil under mild conditions and application of biochar

PANG Zhao-bin; WANG Jian-gang; CUI Hong-you; WANG Jing-hua

doi:10.1016/S1872-5813(23)60344-5

Volume 51 Issue 9

Sep. 2023

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Article Navigation > Journal of Fuel Chemistry and Technology > 2023 > 51(9): 1250-1258

PANG Zhao-bin, WANG Jian-gang, CUI Hong-you, WANG Jing-hua. In-situ catalytic pyrolysis of pine powder by ZnCl2 to bio-oil under mild conditions and application of biochar[J]. Journal of Fuel Chemistry and Technology, 2023, 51(9): 1250-1258. doi: 10.1016/S1872-5813(23)60344-5

Citation:

PANG Zhao-bin, WANG Jian-gang, CUI Hong-you, WANG Jing-hua. In-situ catalytic pyrolysis of pine powder by ZnCl₂ to bio-oil under mild conditions and application of biochar[J]. Journal of Fuel Chemistry and Technology, 2023, 51(9): 1250-1258. doi: 10.1016/S1872-5813(23)60344-5

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In-situ catalytic pyrolysis of pine powder by ZnCl₂ to bio-oil under mild conditions and application of biochar

doi: 10.1016/S1872-5813(23)60344-5

PANG Zhao-bin^1
,,
WANG Jian-gang^1
,,
CUI Hong-you^{1
,
,},
WANG Jing-hua^{1, 2
,
,}

1.
School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255091, China
2.
Shandong Lunan Coal Chemical Research Institute of Engineering and Technology, Zaozhuang University, Zaozhuang 277160, China

Funds: The project was supported by the National Natural Science Foundation of China (21978158).

Received Date: 2022-12-18
Accepted Date: 2023-02-10
Rev Recd Date: 2023-01-18

Available Online: 2023-03-08

Publish Date: 2023-09-30

Abstract

Abstract

Fast pyrolysis of biomass is an effective way for biomass conversion and utilization. However, the pyrolysis temperature is usually high because it is a non-catalytic process, resulting in the complicated composition of bio-oil and difficulty to control. Aiming to explore in-situ catalysis in this paper, the fast pyrolysis of lignin, cellulose, corncob and pine wood powder was studied using ZnCl₂ as the catalyst. The activation energies of non-catalytic pyrolysis and catalytic pyrolysis were obtained based on kinetic fitting of their thermal gravimetric curves. The variation in pyrolysis oil composition was analyzed. It was found that ZnCl₂ in-situ catalysis could not only significantly reduce the pyrolysis temperature, but also simplify the resultant bio-oil composition. Even under pyrolysis temperature as low as 350 ℃, fast pyrolysis of pine wood powder could achieve a yield of 47% of bio-oil, which was predominantly composed of the derivatives of cellulose and hemicellulose. ZnCl₂ in-situ catalysis could significantly decrease the activation energy of cellulose cracking from 304.78 to 112.46 kJ/mol, but has little effect on that of lignin. The carbon residue from ZnCl₂-catalyzed pyrolysis was further carbonized at 600 ℃, affording activated carbon with adsorption capacity of phenol up to 165 mg/g. The research work provides guidance and reference for the development of in-situ catalytic pyrolysis technology with high efficiency.
- biomass,
- fast pyrolysis,
- in-situ catalysis,
- zinc chloride,
- pine wood

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References(38)

References

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