首页|Study on pyrolysis characteristic of iron-based waste catalyst containing wax from Fisher-Tropsch synthesis by TG and Py-GCMS
Study on pyrolysis characteristic of iron-based waste catalyst containing wax from Fisher-Tropsch synthesis by TG and Py-GCMS
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NSTL
Elsevier
The pyrolysis process was a promising technology for the clean, efficient and resource utilization of iron-based waste catalysts containing wax (IWC) produced from Fisher-Tropsch synthesis. In this study, TG and Py-GCMS were used to investigate the pyrolysis characteristics of IWC. The results showed that the main pyrolysis temperature range of IWC was 200-500 degrees C, attributed to the decomposition of wax. Iron species in IWC were converted to Fe metal at >500 degrees C and slightly promoted the pyrolysis of wax. The tar components produced at low temperature were mainly alkanes of C21+ and C-11-C-20, but linear alpha olefins of C-5-C-20 and few dienes at higher temperature. It was also concluded that some aromatics were also produced from IWC especially at above 700 degrees C. TG and kinetic analyses demonstrated that pyrolysis of IWC occurred in a three-stage reaction with activation energy in the range of 126-331 kJ/mol. A possible pyrolysis mechanism of IWC was also proposed.
NSTL
Elsevier
