Effect of single metal (Ni, Fe, Co, Cu) supported biochar catalyst on the distribution of pyrolysis products of tobacco stalks

Jia Yi Yang, Xin Tang, Luo Yuyang He, Ying Qi Sun, Ying Zhen Huang, Wei Luo and Zhi Zhou

Energy, 2024, vol. 313, issue C

Abstract: Economical biochar-supported catalysts prove highly effective in catalytic pyrolysis. This study focuses on the synthesis of four single-metal (Ni, Fe, Co, Cu) catalysts on ZnCl2-modified biochar sourced from tobacco stalks. Their impact on the pyrolysis product distribution from tobacco stalks was assessed. The modified biochar, with an impressive SBET of 1175.63 m2/g and total pore volume of 0.81 cm3/g, was found to effectively load active metals, with loadings exceeding 9.93 %. These catalysts, derived from tobacco stalk char, demonstrated superior catalytic performance, significantly boosting the value of pyrolysis products. Notably, the Fe-C catalyst achieved a remarkable pyrolysis gas yield of 49.04 %, attributed to its large pore structure. The catalysts not only elevated the phenol content in pyrolysis oil but also improved the selectivity for valuable compounds such as Phenol, 2-methoxyphenol, and isoeugenol. The Co-C catalyst, with its robust secondary cracking capability, led to the highest H2 yield of 46.12 % in pyrolysis gas and the richest C6-C11 component content of 79.59 % in pyrolysis oil. Preliminary economic assessments reveal that the Fe-C and Co-C catalysts hold significant potential for tobacco stalk catalytic pyrolysis, with the potential to generate annual revenues of $467,560 and $427,465, respectively.

Keywords: Biomass; Tobacco Stalk; Catalytic pyrolysis; Biochar; Pyrolysis products (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:313:y:2024:i:c:s0360544224036223

DOI: 10.1016/j.energy.2024.133844

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