Research on Chemically Modified Tire-Derived Char and Preliminary Evaluation of Activated Char/Mn-Co-CeOx Catalysts for Toluene Treatment
Main Article Content
Abstract
The study focuses on applying chemical agents to alter char obtained from the pyrolysis of rubber. The findings indicate that the collaborative using of potassium hydroxide (KOH) and HCl yields superior efficiency relative to their individual use. The carbon content in the modified char escalates from 69.9% to 85.5%, the BET-specific surface area experiences an approximate tripling (from 52 cm²/g to 143 cm²/g). Additionally, the mineral constituents, including Si, Ti, Ca, and Zn, as revealed by energy-dispersive X-ray spectroscopy (EDS) analysis, are markedly diminished, particularly Si, which declines from 6.4% to 0.8%. The EDS-Mapping analysis reveals a sparse distribution of the aforementioned metals following the modification process. The fourier transform infrared spectroscopy (FT-IR) analysis further substantiates that the vibrational intensity of the Si-O-Si bond is significantly diminished in the modified char sample, indicating its nearly complete removal. The capacity for toluene adsorption - desorption and oxidation performance of modified char also has been preliminarily evaluated and contrasted with that of activated carbon.
Keywords
Activated char, adsorption, Mn-Co-CeOx, oxidation, rubber pyrolysis.
Article Details
References
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