首页|Tuning the mesopore size of lignin-based porous carbon via salt templating for kraft lignin decomposition
Tuning the mesopore size of lignin-based porous carbon via salt templating for kraft lignin decomposition
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NSTL
Elsevier
A novel and practical CaCl2 salt templating method is used to tune the pore size of carbon materials from calcium lignosulfonate. In-situ crystalized CaCl2 particles serve as templates for mesopores and as carbonization sub-strates. Hierarchical carbons are constructed using coupled SiO2 spheres and CaCl2 templates. The SiO(2 )spheres improve the pore size assigned to CaCl2 particles and high CaCl2:lignin mass ratios benefit large CaCl2 crystals to improve the size of mesopores. The porous carbons are used as supports of molybdenum carbide (MoC) with C-C and C-O cleavage activity for Kraft lignin decomposition into aromatic monomers. The results show that MoC over porous carbon supports achieves the highest aromatic yield of 0.716 g/g Kraft lignin and exhibits high stability of aromatic yields. Suitable pore size for lignin macromolecule diffusion significantly enhances the catalytic performance of molybdenum carbide.
NSTL
Elsevier
