Fast Pyrolysis of Four Lignins from Different Isolation Processes Using Py-GC/MS

Xiaona Lin, Shujuan Sui, Shun Tan, Charles U. Pittman, Jianping Sun and Zhijun Zhang
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Xiaona Lin: MOE Key Laboratory of Bio-based Material Science and Technology, Northeast Forestry University, Harbin 150040, Heilongjiang, China
Shujuan Sui: MOE Key Laboratory of Bio-based Material Science and Technology, Northeast Forestry University, Harbin 150040, Heilongjiang, China
Shun Tan: MOE Key Laboratory of Bio-based Material Science and Technology, Northeast Forestry University, Harbin 150040, Heilongjiang, China
Charles U. Pittman: Department of Chemistry, Mississippi State University, Mississippi State, MS 39762, USA
Jianping Sun: MOE Key Laboratory of Bio-based Material Science and Technology, Northeast Forestry University, Harbin 150040, Heilongjiang, China
Zhijun Zhang: MOE Key Laboratory of Bio-based Material Science and Technology, Northeast Forestry University, Harbin 150040, Heilongjiang, China

Energies, 2015, vol. 8, issue 6, 1-15

Abstract: Pyrolysis is a promising approach that is being investigated to convert lignin into higher value products including biofuels and phenolic chemicals. In this study, fast pyrolysis of four types of lignin, including milled Amur linden wood lignin (MWL), enzymatic hydrolysis corn stover lignin (EHL), wheat straw alkali lignin (AL) and wheat straw sulfonate lignin (SL), were performed using pyrolysis gas-chromatography/mass spectrometry (Py-GC/MS). Thermogravimetric analysis (TGA) showed that the four lignins exhibited widely different thermolysis behaviors. The four lignins had similar functional groups according to the FTIR analysis. Syringyl, guaiacyl and p-hydroxyphenylpropane structural units were broken down during pyrolysis. Fast pyrolysis product distributions from the four lignins depended strongly on the lignin origin and isolation process. Phenols were the most abundant pyrolysis products from MWL, EHL and AL. However, SL produced a large number of furan compounds and sulfur compounds originating from kraft pulping. The effects of pyrolysis temperature and time on the product distributions from corn stover EHL were also studied. At 350 °C, EHL pyrolysis mainly produced acids and alcohols, while phenols became the main products at higher temperature. No obvious influence of pyrolysis time was observed on EHL pyrolysis product distributions.

Keywords: lignin; fast pyrolysis; phenolic compounds; Py-GC/MS (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2015
References: View complete reference list from CitEc
Citations: View citations in EconPapers (9)

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