Microwave-assisted catalytic fast pyrolysis of spent edible mushroom substrate for bio-oil production using surface modified zeolite catalyst

Bo Zhang, Guiwei Tan, Zhaoping Zhong, Roger Ruan

Research output: Contribution to journalArticle

20 Scopus citations

Abstract

In order to minimize coke yield and improve hydrocarbon production during microwave-assisted catalytic fast pyrolysis of spent edible mushroom substrate, ZSM-5 zeolite catalyst is modified with pre-coking treatment, chemical vapor deposition of SiO2, and ethylene diamine tetraacetie acid (EDTA) chemical modification method, respectively (labeled PC-ZSM-5, SiO2-ZSM-5 and EDTA-ZSM-5). Experimental results show that all the modification methods result in a loss of external acid sites of ZSM-5. Among the three modified catalysts, the maximum oil fraction yield and the minimum coke yield are obtained with SiO2-ZSM-5. The relative content of hydrocarbons in oil fraction increases in the following order: SiO2-ZSM-5 > EDTA-ZSM-5 > PC-ZSM-5 > original ZSM-5. Moreover, SiO2-ZSM-5 shows the highest relative contents of toluene and xylene, whereas original ZSM-5 produces the lowest ones. Besides, the selectivity of benzene in aromatics follows the order of original ZSM-5 > EDTA-ZSM-5 > PC-ZSM-5 > SiO2-ZSM-5, while the selectivity of toluene + xylene presents the opposite trend.

Original languageEnglish (US)
Pages (from-to)92-98
Number of pages7
JournalJournal of Analytical and Applied Pyrolysis
Volume123
DOIs
StatePublished - Jan 1 2017

Keywords

  • Microwave heating
  • Spent edible mushroom substrate
  • Surface modification
  • Zeolite catalyst

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