Iron salts-catalyzed biomass hydropyrolysis for production of bio-oil and gaseous hydrocarbons

ZHENG Nan; SHI Ji-long; WANG Jie

Volume 48 Issue 4

Apr. 2020

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ZHENG Nan, SHI Ji-long, WANG Jie. Iron salts-catalyzed biomass hydropyrolysis for production of bio-oil and gaseous hydrocarbons[J]. Journal of Fuel Chemistry and Technology, 2020, 48(4): 414-423.

Citation:

ZHENG Nan, SHI Ji-long, WANG Jie. Iron salts-catalyzed biomass hydropyrolysis for production of bio-oil and gaseous hydrocarbons[J]. Journal of Fuel Chemistry and Technology, 2020, 48(4): 414-423.

ZHENG Nan, SHI Ji-long, WANG Jie. Iron salts-catalyzed biomass hydropyrolysis for production of bio-oil and gaseous hydrocarbons[J]. Journal of Fuel Chemistry and Technology, 2020, 48(4): 414-423.

Citation:

ZHENG Nan, SHI Ji-long, WANG Jie. Iron salts-catalyzed biomass hydropyrolysis for production of bio-oil and gaseous hydrocarbons[J]. Journal of Fuel Chemistry and Technology, 2020, 48(4): 414-423.

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Iron salts-catalyzed biomass hydropyrolysis for production of bio-oil and gaseous hydrocarbons

Department of Chemical Engineering for Energy, East China University of Science and Technology, Shanghai 200237, China

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Corresponding author: WANG Jie, Tel/Fax: +86 2164252462, E-mail: jwang2006@ecust.edu.cn
Received Date: 2020-02-13
Rev Recd Date: 2020-03-22

Available Online: 2021-01-23

Publish Date: 2020-04-10

Abstract

Abstract

The catalytic hydropyrolysis of pine wood was conducted in a fixed bed reactor under a H₂ pressure of 5 MPa at different temperatures (600-700 ℃) to investigate the effects of two iron salts, Fe(NO₃)₃ and FeSO₄, on the upgrading of bio-oil and gaseous products. Fe(NO₃)₃ is found to promote the conversion of biomass to bio-oil and gaseous products, with a carbon conversion rate as high as 97.4%, a CH₄ yield of 21.2%, and a bio-oil yield of 32.8% (daf. biomass basis). Moreover, the oxygen content in the bio-oil decreases, the yield of light aromatic hydrocarbon increases and the yield of BTX (benzene, toluene and xylene) reaches 2.6%. In contrast, FeSO₄ has an inhibitory effect on the production of gaseous hydrocarbons and bio-oil. The XRD analysis shows that Fe(NO₃)₃ is transformed to α-Fe during hydropyrolysis, with the amorphous and porous structures of bio-char being formed. This is highly conducive to the catalytic hydrogenation and methanation of bio-char. But FeSO₄ is converted to Fe₂S₃ during the hydropyrolysis, which might poison the catalytic activity.
- biomass,
- hydropyrolysis,
- iron-based catalyst,
- bio-oil,
- methane

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References(39)

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