The pyrolysis characteristics including reaction kinetics and products distribution of cellulose pyrolysis in the presence of AAEM oxalates were preliminarily studied by using the TG and PY-GC/MS analysis. In general, the main mass loss region took place at 300–400 °C and the maximum mass loss temperature was about 380 °C. The activation energy Ea of cellulose pyrolysis (159 kJ/mol) was decreased in the presence of AAEM oxalates (K2C2O4—123 kJ/mol, MgC2O4—151 kJ/mol and CaC2O4—138 kJ/mol). The major pyrolytic components were classified into furans, anhydrosugars, acids, esters, alcohols, aldehydes, pyrans, ketones, hydrocarbons and phenols, etc. The presence of AAEM oxalates promoted the generation of ketones. In particular, K2C2O4 and MgC2O4 showed a high selectivity (relative content: > 30%) on the production of ketones. As a good candidate of MgO, MgC2O4 or MgCO3 has a high potential for both gas upgrading and porous carbon production in biomass pyrolysis.
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This research work is supported by the Startup Foundation for Introducing Talent of NUIST (2243141501046) and the National Natural Science Foundation of China (21607079).
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Wang, L., Shen, Y. Pyrolysis characteristics of cellulosic biomass in the presence of alkali and alkaline-earth-metal (AAEM) oxalates. Cellulose (2021). https://doi.org/10.1007/s10570-021-03756-3
- Catalytic pyrolysis
- Activation energy
- Gas components