Conversion of soybean soapstock into hydrocarbon fuel by microwave-assisted catalytic fast pyrolysis using MCM-41/HZSM-5 in a downdraft reactor

Xiuhua Yang, Yujie Peng, Yunpu Wang, Lin Jiang, Shumei Zhang, Qiuhao Wu, Xiaojie Tian, Zihong Zeng, Leilei Dai, Linqing Yue, Linyao Ke, Yuhuan Liu, Roger Ruan

Research output: Contribution to journalArticlepeer-review

Abstract

Microwave-assisted catalytic pyrolysis of biomass is a promising technology to obtain hydrocarbon rich fuel oil. In consideration of this method, HZSM-5 is currently recognized as a catalyst with a good effect. However, given the small pore diameter and easy coking of HZSM-5, the catalytic upgrading of bio-oil is limited to a certain extent. In this study, MCM-41 and HZSM-5 were used for joint catalysis to explore the effect of catalytic temperature, the ratio of two catalysts, and the ratio of soybean soapstock and catalysts on the pyrolysis products. The optimal reaction conditions included the following: catalytic temperature, 400 °C; MCM-41/HZSM-5 ratio, 1:1; feedstock/catalyst ratio, 2:1. The results showed that MCM-41 could effectively alleviate the coking of HZSM-5, and the use of both catalysts reduced the bio-oil yield but effectively improved the selectivity of monocyclic aromatic hydrocarbons in bio-oil, thus increasing the value of bio-oil.

Original languageEnglish (US)
Article number108109
JournalChemical Engineering and Processing - Process Intensification
Volume156
DOIs
StatePublished - Oct 2020

Bibliographical note

Funding Information:
This project is financially supported by the National Natural Science Foundation of China (No. 21766019 , No. 21878137 ), The Centrally Guided Local Science Technology Special Project ( 20202ZDB01012 ), Key Research and Development Program of Jiangxi Province ( 20171BBF60023 ), China Scholarship Council ( 201806820035 ).

Keywords

  • Cooperating catalyst
  • HZSM-5 catalyst
  • MCM-41 catalyst
  • Microwave absorbent
  • Soybean soapstock

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