Preparation and Characterization on Pore Structure of Diatomite & Bamboo Charcoal Composite Material

In this research,bamboo charcoal as the main raw material,adding diatomite and silicon aluminum complex as the adhesive,after the processing of bond granulation,surface coating modification and high temperature calcinations,etc.,a new type of diatomite bamboo charcoal composite material was prepared.Characteristics of its pore structure of were studied using N2 adsorption method.The results show its BET specific surface area is 142.563m2/g and the total pore volume is 0.156cm3/g,compared with bamboo charcoal,specific surface area decreased,but the total pore volume increased by 43.12%,which means its adsorption capacity has increased.Micropore porosity,mesopore porosity and macropore porosity were 44.23%,32.05% and 23.72%,so the pore size distribution is more reasonable than diatomite and bamboo charcoal whose distribution scope is too narrow.All indicates that adding diatomite into bamboo charcoal to prepare high mesopore porosity,well-distributed in pore size and big adsorption capacity adsorption material is a feasible method.