Study the Effect of Acid Leaching Treatment on the Catalytic Activity of Chitosan-Based Iron Catalyst in Fischer–Tropsch Synthesis

Abstract

The catalytic activity of an iron–containing nanoscale chitosan-based catalyst in the Fischer–Tropsch synthesis (FTS) and the features of the formation of the structure of such a catalyst have been studied. It is shown that the nature of the acids used in the preparation stage—nitric, acetic or citric, has a significant effect on the structure obtained by partial destruction of chitosan and the size of the nanocrystallites of the active phase, which, in turn, leads to significant changes in the activity of the catalyst and productivity for the target products—C₅₊ hydrocarbons. The best performance of catalyst in FTS observed for the sample, obtained with use of nitric acid: С₅₊ productivity reached to 2136 g С₅₊/kgFe/h.