Upgrading of Fischer–Tropsch Waxes
Wax is only produced during low temperature Fischer–Tropsch (LTFT) synthesis. An overview of commercial upgrading is given, which includes the German LTFT facilities in the 1930-1940's, the South African facility constructed in the 1950's and the new gas-to-liquids facilities built since the 1990's. Non-catalytic and catalytic upgrading approaches are discussed with emphasis on the products and application. The themes explored in this way are thermal cracking, autoxidation, hydrognation, hydroisomerisation, hydrocracking, catalytic cracking and co-catalysis with Fischer–Tropsch synthesis.