Technical benefits of using methane as a pyrolysis medium for catalytic pyrolysis of Kraft lignin
- Authors
- Farooq, Abid; Shiung Lam, Su; Hoon Rhee, Gwang; Lee, Jechan; Ali Khan, Moonis; Jeon, Byong-Hun; Park, Young-Kwon
- Issue Date
- Jun-2022
- Publisher
- Elsevier Ltd
- Keywords
- Methane decomposition; Aromatics; Zeolites; Kraft Lignin
- Citation
- Bioresource Technology, v.353, pp.1 - 6
- Indexed
- SCIE
SCOPUS
- Journal Title
- Bioresource Technology
- Volume
- 353
- Start Page
- 1
- End Page
- 6
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/170132
- DOI
- 10.1016/j.biortech.2022.127131
- ISSN
- 0960-8524
- Abstract
- Catalytic fast pyrolysis of low sulfonated Kraft lignin was performed under different atmospheric environments such as N2, CH4, and the gas derived from CH4 decomposition (CH4-D). The use of Zn- or Mo-loaded HZSM-5 as catalyst led to a higher pyrolytic oil yield compared to parent HZSM-5 in CH4 and CH4-D atmospheres. The yields of benzene, toluene, and xylenes were increased by the synergistic effects from metal loading, higher H/Ceff ratio, higher acidity, and CH4 activation. The enhanced CH4 activation via metal loading resulted in higher methylation of alkyl moieties and 33% increase in the total yield of benzene, toluene, and xylenes in comparison to parent HZSM-5. A higher H/Ceff ratio of 6 via CH4 decomposition led to the formation of a hydro-pyrolysis environment. Moreover, the CH4-D environment showed H2/CH4 ratio of 0.36 in the product gas which warranted the presence of more H2 under the CH4-D pyrolysis environment.
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