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Performance of MCM-22 zeolite for the catalytic fast-pyrolysis of acid-washed wheat straw

SYSNO ASEP	0490683
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Performance of MCM-22 zeolite for the catalytic fast-pyrolysis of acid-washed wheat straw
Author(s)	Hernando, H. (ES) Fermoso, J. (ES) Ochoa-Hernández, Cristina (UFCH-W) Opanasenko, Maksym (UFCH-W)_{RID, ORCID} Pizarro, P. (ES) Coronado, J. M. (ES) Čejka, Jiří (UFCH-W)_{RID, ORCID, SAI} Serrano, D. P. (ES)
Source Title	Catalysis Today. - : Elsevier - ISSN 0920-5861 Roč. 304, SI (2018), s. 30-38
Number of pages	9 s.
Language	eng - English
Country	NL - Netherlands
Keywords	bio-oil production ; 2-dimensional zeolites ; woody biomass ; bed reactor ; beta ; perspectives ; cellulose ; pathways ; biofuels
Subject RIV	CF - Physical ; Theoretical Chemistry
OECD category	Physical chemistry
R&D Projects	GBP106/12/G015 GA ČR - Czech Science Foundation (CSF)
Institutional support	UFCH-W - RVO:61388955
UT WOS	000425179000005
EID SCOPUS	85030483012
DOI	10.1016/j.cattod.2017.09.043
Annotation	MCM-22 zeolite samples, having different Si/Al ratios, have been studied for the fast-pyrolysis of acid-washed wheat straw at two catalytic pyrolysis temperatures aimed to the production of partially upgraded bio-oil. The best combination of bio-oil deoxygenation activity and energy yield is obtained when the catalytic bed was operated at 450 degrees C using the MCM-22 sample with the lowest Al content (Si/Al = 40). Interestingly, the increase in the reaction temperature results in a lower amount of coke deposited over the zeolite. On the other hand, reducing the zeolite Si/Al ratio had a negative effect as a higher concentration of acid sites promotes non-desired reactions: severe cracking of the bio-oil vapours, leading to the enhanced production of gaseous hydrocarbons, and coke formation. Coke produced over MCM-22 zeolite exhibits high oxygen content, whereas the bio-oil fraction presents a high concentration of oxygenated aromatics. These results denote the limited aromatization activity of MCM-22 zeolite for producing aromatic hydrocarbons, in particular when compared with ZSM-5, being of interest for the selective production of phenolic compounds by biomass catalytic pyrolysis.
Workplace	J. Heyrovsky Institute of Physical Chemistry
Contact	Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196
Year of Publishing	2019

Number of the records: 1