Fast pyrolysis of coconut biomass - An FTIR study

► In situ IR study was employed for investigation of coconut shell fast pyrolysis. ► Reaction pathways of coconut shell fast pyrolysis were proposed. ► Increase the heating rate increased the yield of aliphatic and carbonyl compounds in liquid pyrolysis. ► In situ IR study suggests that CO and CO2 were produced from cracking of CH and CO bonds. ► Fast pyrolysis of D2O-saturated coconut shell showed no effect on the H2 yield.