Co-pyrolysis of biomass and soapstock in a downdraft reactor using a novel ZSM-5/SiC composite catalyst

Lin Jiang; Yunpu Wang; Leilei Dai; Zhenting Yu; Qi Yang; Sha Yang; Deyu Jiang; Zhiyun Ma; Qiuhao Wu; Bo Zhang; Yuhuan Liu; Roger Ruan

doi:10.1016/j.biortech.2019.01.119

Co-pyrolysis of biomass and soapstock in a downdraft reactor using a novel ZSM-5/SiC composite catalyst

Bioresour Technol. 2019 May:279:202-208. doi: 10.1016/j.biortech.2019.01.119. Epub 2019 Jan 25.

Authors

Lin Jiang¹, Yunpu Wang², Leilei Dai¹, Zhenting Yu¹, Qi Yang¹, Sha Yang¹, Deyu Jiang¹, Zhiyun Ma¹, Qiuhao Wu¹, Bo Zhang³, Yuhuan Liu¹, Roger Ruan⁴

Affiliations

¹ State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China; Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, China.
² State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China; Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, China. Electronic address: [email protected].
³ Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing, Jiangsu 210096, China.
⁴ State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China; Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, China; Center for Biorefining and Department of Bioproducts and Biosystems Engineering University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, USA.

PMID: 30735929
DOI: 10.1016/j.biortech.2019.01.119

Abstract

A ZSM-5/SiC composite catalyst was synthesized and characterized by Brunauer-Emmett-Teller analysis, X-ray diffraction, and scanning electron microscopy in this study. The composite catalyst had the characteristics of ZSM-5 and SiC, and the surface of SiC grew evenly with a layer of ZSM-5. The effect of the composite catalyst on the product distribution and chemical composition in a co-pyrolysis downdraft system was investigated. In a down system with a catalytic temperature of 450 °C, a feed-to-catalyst ratio of 2:1, and a soybean-soapstock-to-straw ratio of 1:1, the proportions of alkanes, olefins, aromatics, and phenoxy compounds were 6.82%, 4.5%, 73.56% and 11.11%, respectively. The composite catalyst combined the catalytic performance of ZSM-5 and SiC, increasing the proportion of aromatics and decreasing the proportion of oxygen-containing compound in the bio-oil. Moreover, the composite catalyst maintained its activity after reusing several times.

Keywords: Co-pyrolysis; Composite catalyst; Downdraft system; SiC ceramic foam; ZSM-5.

MeSH terms

Biomass*
Catalysis
Plant Oils / metabolism
Polyphenols / metabolism
Pyrolysis
Silicon Compounds / chemistry*
Temperature
X-Ray Diffraction
Zeolites / chemistry*

Substances

Bio-Oil
Plant Oils
Polyphenols
Silicon Compounds
ZSM-5 zeolite
Zeolites