skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Comparative Study of the Structure of Hydroproducts Derived from Loblolly Pine and Straw Grass

Abstract

We investigated the structural characteristics of products derived from the hydrothermal carbonization (HTC) of loblolly pine (LP) and straw grass (SG) via solid-state cross-polarization/magic angle spinning nuclear magnetic resonance (CP/MAS 13C NMR), heteronuclear single-quantum correlation nuclear magnetic resonance (HSQC-NMR), and solution 13C NMR and 31P NMR techniques. Our results revealed that after HTC, hydrochars from both LP and SG mainly consisted of a combination of lignin, furfural, and condensed polyaromatic structures with a high level of fixed carbon content and higher heating value (HHV). Hydrochar from LP exhibited a higher aryl to furan ratio, and those from SG contained more aliphatic functional groups. Solution 13C NMR and HSQC revealed that both liquid chemicals were condensed polyphenolic structures with aliphatic groups that exist mainly in the form of side chains. Although the LP products exhibited a higher proportion of aromatic structures, the types of polyphenol and aliphatic C–H were more diverse in the SG products. Results also indicated that reactions such as chain scission and condensation occurred during hydrothermal carbonization processes. Overall, HTC was found to be an effective refinery treatment for converting different waste biomass into valuable energy materials and chemicals.

Authors:
ORCiD logo [1];  [2];  [1];  [1];  [1]; ORCiD logo [3]
  1. Qingdao Univ. of Science adn Technology (China)
  2. Washington State Univ., Pullman, WA (United States)
  3. Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
OSTI Identifier:
1376590
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
ACS Sustainable Chemistry & Engineering
Additional Journal Information:
Journal Volume: 5; Journal Issue: 7; Journal ID: ISSN 2168-0485
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; Biomass; Carbonaceous materials; NMR techniques; Thermal conversion

Citation Formats

Wu, Qiong, Huang, Lang, Yu, Shitao, Liu, Shiwei, Xie, Congxia, and Ragauskas, Arthur J. Comparative Study of the Structure of Hydroproducts Derived from Loblolly Pine and Straw Grass. United States: N. p., 2017. Web. https://doi.org/10.1021/acssuschemeng.7b01005.
Wu, Qiong, Huang, Lang, Yu, Shitao, Liu, Shiwei, Xie, Congxia, & Ragauskas, Arthur J. Comparative Study of the Structure of Hydroproducts Derived from Loblolly Pine and Straw Grass. United States. https://doi.org/10.1021/acssuschemeng.7b01005
Wu, Qiong, Huang, Lang, Yu, Shitao, Liu, Shiwei, Xie, Congxia, and Ragauskas, Arthur J. Fri . "Comparative Study of the Structure of Hydroproducts Derived from Loblolly Pine and Straw Grass". United States. https://doi.org/10.1021/acssuschemeng.7b01005. https://www.osti.gov/servlets/purl/1376590.
@article{osti_1376590,
title = {Comparative Study of the Structure of Hydroproducts Derived from Loblolly Pine and Straw Grass},
author = {Wu, Qiong and Huang, Lang and Yu, Shitao and Liu, Shiwei and Xie, Congxia and Ragauskas, Arthur J.},
abstractNote = {We investigated the structural characteristics of products derived from the hydrothermal carbonization (HTC) of loblolly pine (LP) and straw grass (SG) via solid-state cross-polarization/magic angle spinning nuclear magnetic resonance (CP/MAS 13C NMR), heteronuclear single-quantum correlation nuclear magnetic resonance (HSQC-NMR), and solution 13C NMR and 31P NMR techniques. Our results revealed that after HTC, hydrochars from both LP and SG mainly consisted of a combination of lignin, furfural, and condensed polyaromatic structures with a high level of fixed carbon content and higher heating value (HHV). Hydrochar from LP exhibited a higher aryl to furan ratio, and those from SG contained more aliphatic functional groups. Solution 13C NMR and HSQC revealed that both liquid chemicals were condensed polyphenolic structures with aliphatic groups that exist mainly in the form of side chains. Although the LP products exhibited a higher proportion of aromatic structures, the types of polyphenol and aliphatic C–H were more diverse in the SG products. Results also indicated that reactions such as chain scission and condensation occurred during hydrothermal carbonization processes. Overall, HTC was found to be an effective refinery treatment for converting different waste biomass into valuable energy materials and chemicals.},
doi = {10.1021/acssuschemeng.7b01005},
journal = {ACS Sustainable Chemistry & Engineering},
number = 7,
volume = 5,
place = {United States},
year = {2017},
month = {5}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

Save / Share: