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Open AccessArticle

Catalytic Pyrolysis of Chilean Oak: Influence of Brønsted Acid Sites of Chilean Natural Zeolite

1
Wood Engineering Department, Faculty of Engineering, University of Bío-Bío (UBB), 4030000 Concepción, Chile
2
Nanomaterials and Catalysts for Sustainable Processes (NanoCatpPS), UBB, 4030000 Concepción, Chile
3
School of Industrial Processes Engineering, Temuco Catholic University, 4780000 Temuco, Chile
*
Author to whom correspondence should be addressed.
Catalysts 2017, 7(12), 356; https://doi.org/10.3390/catal7120356
Received: 2 November 2017 / Revised: 20 November 2017 / Accepted: 21 November 2017 / Published: 24 November 2017
(This article belongs to the Special Issue Catalytic Processes for The Valorisation of Biomass Derived Molecules)
This paper proposes the Chilean natural zeolite as catalyst on bio-oil upgrade processes. The aim of this study was to analyze chemical composition of bio-oil samples obtained from catalytic pyrolysis of Chilean native oak in order to increase bio-oil stability during storage. In order to identify chemical compounds before and after storage, biomass pyrolysis was carried out in a fixed bed reactor at 623 K and bio-oil samples were characterized by gas chromatography/mass spectrophotometry (GC/MS). A bio-oil fractionation method was successfully applied here. Results indicate that bio-oil viscosity decreases due to active sites on the zeolite framework. Active acids sites were associated with an increment of alcohols, aldehydes, and hydrocarbon content during storage. Higher composition on aldehydes and alcohols after storage could be attributed to the occurrence of carbonyl reduction reactions that promotes them. These reactions are influenced by zeolite surface characteristics and could be achieved via the direct contribution of Brønsted acid sites to Chilean natural zeolite. View Full-Text
Keywords: bio-oil upgrade; Brønsted acids sites; Chilean natural zeolites; GC/MS characterization bio-oil upgrade; Brønsted acids sites; Chilean natural zeolites; GC/MS characterization
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MDPI and ACS Style

Alejandro Martín, S.; Cerda-Barrera, C.; Montecinos, A. Catalytic Pyrolysis of Chilean Oak: Influence of Brønsted Acid Sites of Chilean Natural Zeolite. Catalysts 2017, 7, 356.

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