Lee, Hyung Won Kim, Tae Hwan Park, Sung Hoon Jeon, Jong-Ki Suh, Dong Jin Park, Young-Kwon 2024-01-20T12:33:22Z 2024-01-20T12:33:22Z 2021-09-05 2013-04 1533-4880 https://pubs.kist.re.kr/handle/201004/128195 The catalytic pyrolysis of lignin was carried out at 500 degrees C using pyrolysis gas chromatography/mass spectrometry. In-situ vapor cracking method, in which the vapor-phase products from the noncatalytic pyrolysis step were catalytically upgraded in the second step, was used. Mesoporous Y zeolite, which was synthesized from commercial zeolite Y (CBV720) using the pseudomorphic synthesis method, was used for the catalytic pyrolysis of lignin for the first time. Further, a representative mesoporous material, Al-MCM-41, was applied for the catalytic pyrolysis of lignin. The main products of the non-catalytic pyrolysis of lignin were phenolic compounds because lignin mainly comprises phenylpropane units. Catalytic upgrading of the non-catalytic pyrolysis products resulted in increased yields of low-molecular-mass phenolics, mono aromatics, and poly aromatic hydrocarbons (PAHs). The production of mono aromatics and PAHs was enhanced remarkably when the more acidic mesoporous Y zeolite was used. Conversely, the yield of alkoxy phenolics was higher when the less acidic Al-MCM-41 was used. With increasing mesoporous Y/lignin ratio, the yield of total phenolics decreased and that of light phenolics increased. The yields of mono aromatics and PAHs increased sharply with increasing mesoporous Y/lignin ratio. English AMER SCIENTIFIC PUBLISHERS BIOMASS SELECTIVITY CHEMICALS AROMATICS Catalytic Fast Pyrolysis of Lignin Over Mesoporous Y Zeolite Using Py-GC/MS Article 10.1166/jnn.2013.7421 1 JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.13, no.4, pp.2640 - 2646 JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 13 4 2640 2646 scie scopus 000319027400024 2-s2.0-84876934392 Chemistry, Multidisciplinary Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article BIOMASS SELECTIVITY CHEMICALS AROMATICS Lignin Mesoporous Y Catalytic Fast Pyrolysis Py-GC/MS