Separation and analysis of maceral concentrates from Victorian brown coal

•Separation and analysis of maceral groups of 5 Victorian brown coal were studied.•The yields of float fraction correlated to the aliphaticities of the coals.•Liptinite-rich float fraction had higher proportions of aliphatics & triterpenoids.•Vitrinite-rich sink fraction had a higher proportion of aromatics.•Pyrolysis temperature significantly affected the product distribution.