Crotonic Acid Production by Pyrolysis and Vapor Fractionation of Mixed Microbial Culture-Based Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)

被引：6

作者：

Elhami, Vahideh ^{[1
]}

Hempenius, Mark A. ^{[2
]}

Schuur, Boelo ^{[1
]}

机构：

[1] Univ Twente, Fac Sci & Technol, Sustainable Proc Technol Grp, NL-7522 NB Enschede, Netherlands

[2] Univ Twente, Fac Sci & Technol, Sustainable Polymer Chem Grp, NL-7522 NB Enschede, Netherlands

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2023年 / 62卷 / 02期

关键词：

THERMAL-DEGRADATION; POLY(3-HYDROXYBUTYRATE); POLYHYDROXYALKANOATES; MECHANISMS;

D O I：

10.1021/acs.iecr.2c03791

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Crotonic acid (CA) and trans-2-pentenoic acid (2-PA) can be obtained from renewable resources by pyrolysis of the bio-based poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) copolymer. In this study, direct pyrolysis of the PHBV-enriched biomass into CA and 2-PA was studied under an inert atmosphere and N2 carrier gas flow, aiming at obtaining high acid yields from mixed microbial cultures (MMCs). The highest yields of 80 +/- 2% for CA and 67 +/- 1% for 2-PA were obtained at conditions of 240 degrees C, 1 h, and 0.15 L/min nitrogen flow rate, corresponding to a mean hot vapor residence time of 20 s. A similar acid yield was achieved when the pyrolysis was performed under reduced pressure (150 mbar) instead of using nitrogen gas. The combined pyrolysis of extracted PHBV at 220 degrees C and 90 min with vapor fractionation by distillation resulted in yields of 81 and 92% for CA and 2-PA, respectively.

引用

页码：916 / 923

页数：8

共 30 条

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