A low temperature thermo-chemical conversion of biomass to maximise the hydrogen-rich sync gas product to replicate a one-step hydrogen production using oil palm empty fruit bunches (EFB) as an alternative process for renewable hydrogen production is studied. The slow pyrolysis with inexpensive and abundant selected catalysts alkali metal hydroxides such as NaOH is conducted in a pyrolyser unit with a continuous feeding system. The bio-hydrogen is expected to be free of CO and CO2, and the process could be optimized at relatively low temperature of 500-600K, which is significantly lower than the normal temperature ranges for biomass gasification process.