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Tire-derived carbon for catalytic preparation of biofuels from feedstocks containing free fatty acids

Journal Article · · Carbon Resources Conversion
 [1];  [2];  [3];  [4];  [3];  [5];  [6];  [2];  [3]
  1. Georgia Inst. of Technology, Atlanta, GA (United States). School of Chemistry and Biochemistry; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science (CNMS)
  2. Wake Forest University, Winston-Salem, NC (United States). Department of Chemistry and Center for Energy, Environment, and Sustainability (CEES)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Sciences Division; Univ. of Tennessee, Knoxville, TN (United States). The Bredesen Center for Interdisciplinary Research and Graduate Education
  4. Univ. of Louisville, KY (United States). Mechanical Engineering and Conn Center for Renewable Energy Research
  5. Univ. of Tennessee, Knoxville, TN (United States). The Bredesen Center for Interdisciplinary Research and Graduate Education; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
  6. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science (CNMS)
The utilization of waste feedstocks rich in free fatty acids (FFAs) improves biofuel production on the basis of economics and sustainability. However, converting these feedstocks to usable biofuel poses inherent problems in terms of the FFA to biofuel conversion yield and the catalyst lifetime. Here, we report novel ferric sulfate impregnated carbon derived from waste tires as highly active catalysts for FFA to biofuel conversion. Our approach takes advantage of facile synthesis methods involving sonication and dehydration processes to create materials that are useful for the efficient catalytic conversion of FFAs to advanced biofuels. Esterification of FFAs to fatty acid methyl esters was achieved at 65 °C and atmospheric pressure with >98% yield even in the presence of triglycerides. These catalysts maintained similar activity after four successive uses, which indicates that the active catalytic sites are effectively supported by the three-dimensional meso/microporous architecture of the tire-derived carbon.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1474577
Journal Information:
Carbon Resources Conversion, Journal Name: Carbon Resources Conversion Journal Issue: 2 Vol. 1; ISSN 2588-9133
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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