Novel Acid Catalysts from Waste-Tire-Derived Carbon [electronic resource] : Application in Waste-to-Biofuel Conversion

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Tác giả:

Ngôn ngữ: eng

Ký hiệu phân loại: 665.7 Natural gas and manufactured gases

Thông tin xuất bản: Oak Ridge, Tenn. : Oak Ridge, Tenn. : Oak Ridge National Laboratory ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2017

Mô tả vật lý: Size: 4975-4982 : , digital, PDF file.

Bộ sưu tập: Metadata

ID: 263205

 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 (-SO<
 sub>
 3<
 /sub>
 H) 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 -SO<
 sub>
 3<
 /sub>
 H groups on the surface through an environmentally benign process that involved the sequential treatment with L-cysteine, dithiothreitol, and H<
 sub>
 2<
 /sub>
 O<
 sub>
 2<
 /sub>
 . 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.
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