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Title: Novel Acid Catalysts from Waste-Tire-Derived Carbon: Application in Waste-to-Biofuel Conversion

Journal Article · · Chemistry Select
 [1];  [2];  [3];  [3];  [4];  [4];  [5];  [2];  [2]; ORCiD logo [3]
  1. Georgia Inst. of Technology, Atlanta, GA (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Wake Forest Univ., Winston-Salem, NC (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); The Univ. of Tennessee, Knoxville, TN (United States)
  4. Georgia Inst. of Technology, Atlanta, GA (United States)
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Many inexpensive biofuel feedstocks, including those containing free fatty acids (FFAs) in high concentrations, are typically disposed of as waste due to our inability to efficiently convert them into usable biofuels. Here we demonstrate that carbon derived from waste tires could be functionalized with sulfonic acid (-SO3H) to effectively catalyze the esterification of oleic acid or a mixture of fatty acids to usable biofuels. Waste tires were converted to hard carbon, then functionalized with catalytically active -SO3H groups on the surface through an environmentally benign process that involved the sequential treatment with L-cysteine, dithiothreitol, and H2O2. In conclusion, when benchmarked against the same waste-tire derived carbon material treated with concentrated sulfuric acid at 150 °C, similar catalytic activity was observed. Both catalysts could also effectively convert oleic acid or a mixture of fatty acids and soybean oil to usable biofuels at 65 °C and 1 atm without leaching of the catalytic sites.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1376323
Alternate ID(s):
OSTI ID: 1373956
Journal Information:
Chemistry Select, Vol. 2, Issue 18; ISSN 2365-6549
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 16 works
Citation information provided by
Web of Science

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Cited By (4)

Batch to batch variation study for biodiesel production by hydrothermal carbon catalyst: preparation, characterization and its application journal January 2020
Carbon-Based Catalyst from Pyrolysis of Waste Tire for Catalytic Ethanol Dehydration to Ethylene and Diethyl Ether journal February 2019
Conversion of Waste Tire Rubber into High-Value-Added Carbon Supports for Electrocatalysis journal January 2018
Magnetic adsorbents for selective removal of selenite from contaminated water journal February 2019