Hydrotreating of non-food feedstocks over Raney nickel for the production of synthetic diesel fuel

Autor: Thomas Telser, Sigurd Schober, Alexander F. H. Studentschnig, Martin Mittelbach
Rok vydání: 2016
Předmět:
Zdroj: Biofuels. 7:279-287
ISSN: 1759-7277
1759-7269
Popis: Non-food feedstocks including castor oil, palm fatty acid distillate and waste tallow were successfully converted into liquid hydrocarbon mixtures. This was achieved by a batch hydrotreating process over commercial Raney nickel as a catalyst within 5 h at a reaction temperature of 360 °C and an initial hydrogen pressure of 90 bar. The obtained liquid products consist of straight chain alkanes in the range from C8 to C20. Low amounts (2.5–4.4%) of higher n-alkanes (up to C28) could be detected. The occurrence of the latter indicates a Fischer-Tropsch like process under the chosen conditions besides the expected decarbonylation/decarboxylation and accompanying cracking reactions. Products obtained from castor oil also comprised an overall amount of 19% of ketones in the range from C8 to C19. All obtained products were tested on important fuel properties according to well-established methods given in EN 590, the European Standard for diesel fuel. Comparison with the obligatory boundary values given w...
Databáze: OpenAIRE