Kinetics of furfuryl alcohol condensation over acid catalyst for preparing diesel precursor
Autor: | Chunsong Ma, Peiqin Sun, Shaohui Sun, Ruishu Yang, Junwu Chen |
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Rok vydání: | 2017 |
Předmět: |
Reaction mechanism
Order of reaction 010405 organic chemistry Chemistry Mechanical Engineering Building and Construction 010402 general chemistry Condensation reaction 01 natural sciences Pollution Industrial and Manufacturing Engineering 0104 chemical sciences Catalysis Furfuryl alcohol Chemical kinetics Gel permeation chromatography chemistry.chemical_compound General Energy Polymerization Organic chemistry Electrical and Electronic Engineering Civil and Structural Engineering |
Zdroj: | Energy. 135:577-584 |
ISSN: | 0360-5442 |
Popis: | C 9 -C 25 oxygen-containing compounds formed via the condensation reaction of furfuryl alcohol(FA) can be used as fuel intermediates for the production of bio-fuel. In this paper, the condensation reaction of FA was carried on over sulfuric acid catalyst in a batch aqueous phase reactor, in which the produced oligomers were separated from aqueous reaction system automatically before they went on further to form polymers. Reaction kinetics experiments showed that the values of reaction order of FA and sulfuric acid all were 1. The molecular structure and content of short chain-length oligomers B (C 9 -C 25 ) were analyzed by gas chromatography-mass spectrometry (GC-MS) and gas chromatography (GC) respectively. The molecular weight of FA condensate was determined by gel permeation chromatography (GPC). According to the information provided by GC/MS and GPC, we revealed that two polymerization mechanisms, step-growth polymerization and chain-growth polymerization, coexist in FA condensation reaction process in aqueous system. A simplified kinetics model based on the present mechanisms was established, and condensation products were divided into short chain-length oligomers B (C 9 -C 25 ) and long chain-length oligomers C (>C 25 ). |
Databáze: | OpenAIRE |
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