SORPTION ENHANCED CATALYTIC PYROLYSIS OF RICE HUSK USING HIERARCHICAL ZSM-5 CATALYST

📄 Project Abstract

The necessity to source clean energy and contain CO2 emissions has brought about a global interest in the use of biomass as an environmental friendly renewable energy route. One of the drawbacks in the conversion of biomass to energy via pyrolysis/gasification is the liberation of CO2 from the syngas.This study was carried out in a two- stage catalytic process using rice husk as feed, ZSM-5 catalysts for cracking and reforming of the pyrolysis volatiles and calcineddolomite as CO2 capture material (sorbent).The catalyst include commercial ZSM-5, hierarchical ZSM-5 which was prepared by desilication method using 0.2 mol/dm3 NaOH, and 2 wt.% Zn-wt.%and hierarchical ZSM-5 which was prepared by doping metal on the hierarchical ZSM-5 through wetness impregnation.Calcineddolomite was prepared by size reduction and calcination of the dolomite precursor.Sorbent and catalysts were characterized using XRD, FTIR, BET and TGA techniques. The XRD results of the catalysts indicatedthat the crystalli...