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자료유형
학술저널
저자정보
Zulqarnain (University of Science and Technology) Dong Hyuk Chun (Korea Institute of Energy Research) Soo Hyun Kim (Korea Institute of Energy Research) Jiho Yoo (Korea Institute of Energy Research)
저널정보
한국에너지기후변화학회 에너지기후변화학회지 에너지기후변화학회지 Vol.18 No.2
발행연도
2023.12
수록면
307 - 326 (20page)

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이 논문의 연구 히스토리 (3)

초록· 키워드

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Highly concentrated volatile organic compounds (VOCs) as a precursor of PM<SUB>2.5</SUB> are emitted from car painting booths, laundry facilities, printing machines, and refinery industries in Korea. They have high volatility, strong resistance to degradation, and release a significant amount of heat into the atmosphere. Exposure to them can also cause serious damage to human health. Therefore, recycling is necessary instead of discharge to the environment. Currently, hydrogen (H2), as a carbon-neutral energy alternative to fossil fuels, is synthesized from the steam reforming of highly concentrated toluene. However, catalyst deactivation caused by coke deposition is one of the main challenges in steam reforming reactions. Temperature and steam-to-carbon (S/C) ratio are the crucial reaction parameters significantly contribute to the deposition of coke on the surface of the catalyst. Highly concentrated toluene was steam-reformed for 24 hours to study the coking behavior of Ni/Al₂O₃ at T = 400 - 600 °C, (S/C) = 3 - 12, and gas-hourly-space velocity (GHSV) = 15,000 hr<SUP>-1</SUP> in this study. The maximum rate of carbon deposition of 180.96 mgc/gcat and H₂ yield of 91% is observed at T = 550 °C, S/C = 6 in the presence of Ni/Alumina catalyst. At 400 °C and 450 °C with a S/C ratio of 6, the formation of amorphous coke was observed, which deactivated the activity of the catalyst. Filamentous coke was dominant at temperatures between 500 °C and 600 °C and with an S/C ratio of 9 to 12, but it had no significant effect on catalyst stability.

목차

ABSTRACT
1. Introduction
2. Experimental
3. Results and Discussions
4. Conclusion
References

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