Abstract：In order to realize the high value-added utilization of coal-bed methane, a coal/bio-based hierarchical porous carbon material can be prepared by adding biomass and KOH to coal, and it is applied to the direct cracking of coal-bed methane to produce hydrogen. Which can not only produce high-purity hydrogen, but also obtain a certain amount of carbon materials. In view of the problems of many influencing factors in the preparation process of coal/bio-based hierarchical porous carbon, the Design-Expert software was used to build an experimental scheme for preparing coal/bio based graded porous carbon materials. Combined with the experimental data for the catalytic cracking reaction of coalbed methane to produce hydrogen over the synthesized porous carbon materials. The influencing factors were analyzed and the fitting equation between the influencing factors and the reaction conversion was established，furthermore, the experimental scheme was optimized. The results showed that temperature and alkali-carbon ratio were the main influential factors in the preparation process of coal/bio-based hierarchical porous carbon. The maximum error between the theoretical optimal solution and the experimental value for preparing coal/bio based graded porous carbon materials was 3.3%, indicating that the optimization of the preparation process by the Design-Expert software was accurate and reliable. The catalytic activity of the coal/bio-based hierarchical porous carbons for the cracking reaction of coal-bed methane was higher than that of raw coal materials. The former produced a large number of carbon spheres while the latter produced a large number of carbon spheres and carbon fibers, on the surface of materials after the reaction.
WANG Fuquan,LI Tongda,CUI Kai et al. Optimization and Application for Preparation Process of Coal/Bio-Based Porous Carbon Materials [J]. Chemical Reaction Engineering and Technology, 2023, 39(1): 62-71.
