Catalytic conversion of Laminaria japonica over microporous zeolites

Hyung Won Lee; Suek Joo Choi; Sung Hoon Park; Jong Ki Jeon; Sang Chul Jung; Sang Hoon Joo; Young Kwon Park

doi:10.1016/j.energy.2013.05.023

Catalytic conversion of Laminaria japonica over microporous zeolites

Hyung Won Lee, Suek Joo Choi, Sung Hoon Park, Jong Ki Jeon, Sang Chul Jung, Sang Hoon Joo, Young Kwon Park

School of Environmental Engineering

Research output: Contribution to journal › Article › peer-review

52 Scopus citations

Abstract

The catalytic pyrolysis of Laminaria japonica was carried out over four different microporous zeolite catalysts, HZSM-5 (SiO₂/Al₂O₃=23, 80), HBETA (SiO₂/Al₂O₃=25) and HY (SiO₂/Al₂O₃=30). The effects of the catalysts on the properties of the resulting pyrolysis products were examined. Py-GC/MS (pyrolysis gas chromatography/mass spectrometry) was used to compare the composition of the bio-oils obtained from the non-catalytic and catalytic pyrolysis. Catalytic upgrading decreased the oil yield but increased the gas yield. The composition of bio-oil was changed to a large extent by catalytic upgrading. Among the oxygenate species contained in the bio-oil, the contents of 1,5-anhydro-d-mannitol and 1,4-anhydro-d-galacitol were reduced considerably by catalytic upgrading, whereas the proportions of furans and cyclopentanones were increased. The formation of high value-added aromatics was enhanced considerably by catalytic upgrading, which was attributed to the acid characteristics of the zeolite catalysts. HZSM-5 (SiO₂/Al₂O₃=23), which had the strongest acid sites, showed the highest selectivity for aromatics production.

Original language	English
Pages (from-to)	2-6
Number of pages	5
Journal	Energy
Volume	66
DOIs	https://doi.org/10.1016/j.energy.2013.05.023
State	Published - 1 Mar 2014

Keywords

Aromatics
Catalytic pyrolysis
Laminaria japonica
Microporous zeolites

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10.1016/j.energy.2013.05.023

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title = "Catalytic conversion of Laminaria japonica over microporous zeolites",

abstract = "The catalytic pyrolysis of Laminaria japonica was carried out over four different microporous zeolite catalysts, HZSM-5 (SiO2/Al2O3=23, 80), HBETA (SiO2/Al2O3=25) and HY (SiO2/Al2O3=30). The effects of the catalysts on the properties of the resulting pyrolysis products were examined. Py-GC/MS (pyrolysis gas chromatography/mass spectrometry) was used to compare the composition of the bio-oils obtained from the non-catalytic and catalytic pyrolysis. Catalytic upgrading decreased the oil yield but increased the gas yield. The composition of bio-oil was changed to a large extent by catalytic upgrading. Among the oxygenate species contained in the bio-oil, the contents of 1,5-anhydro-d-mannitol and 1,4-anhydro-d-galacitol were reduced considerably by catalytic upgrading, whereas the proportions of furans and cyclopentanones were increased. The formation of high value-added aromatics was enhanced considerably by catalytic upgrading, which was attributed to the acid characteristics of the zeolite catalysts. HZSM-5 (SiO2/Al2O3=23), which had the strongest acid sites, showed the highest selectivity for aromatics production.",

keywords = "Aromatics, Catalytic pyrolysis, Laminaria japonica, Microporous zeolites",

author = "Lee, {Hyung Won} and Choi, {Suek Joo} and Park, {Sung Hoon} and Jeon, {Jong Ki} and Jung, {Sang Chul} and Joo, {Sang Hoon} and Park, {Young Kwon}",

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AU - Lee, Hyung Won

AU - Choi, Suek Joo

AU - Park, Sung Hoon

AU - Jeon, Jong Ki

AU - Jung, Sang Chul

AU - Joo, Sang Hoon

AU - Park, Young Kwon

PY - 2014/3/1

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N2 - The catalytic pyrolysis of Laminaria japonica was carried out over four different microporous zeolite catalysts, HZSM-5 (SiO2/Al2O3=23, 80), HBETA (SiO2/Al2O3=25) and HY (SiO2/Al2O3=30). The effects of the catalysts on the properties of the resulting pyrolysis products were examined. Py-GC/MS (pyrolysis gas chromatography/mass spectrometry) was used to compare the composition of the bio-oils obtained from the non-catalytic and catalytic pyrolysis. Catalytic upgrading decreased the oil yield but increased the gas yield. The composition of bio-oil was changed to a large extent by catalytic upgrading. Among the oxygenate species contained in the bio-oil, the contents of 1,5-anhydro-d-mannitol and 1,4-anhydro-d-galacitol were reduced considerably by catalytic upgrading, whereas the proportions of furans and cyclopentanones were increased. The formation of high value-added aromatics was enhanced considerably by catalytic upgrading, which was attributed to the acid characteristics of the zeolite catalysts. HZSM-5 (SiO2/Al2O3=23), which had the strongest acid sites, showed the highest selectivity for aromatics production.

AB - The catalytic pyrolysis of Laminaria japonica was carried out over four different microporous zeolite catalysts, HZSM-5 (SiO2/Al2O3=23, 80), HBETA (SiO2/Al2O3=25) and HY (SiO2/Al2O3=30). The effects of the catalysts on the properties of the resulting pyrolysis products were examined. Py-GC/MS (pyrolysis gas chromatography/mass spectrometry) was used to compare the composition of the bio-oils obtained from the non-catalytic and catalytic pyrolysis. Catalytic upgrading decreased the oil yield but increased the gas yield. The composition of bio-oil was changed to a large extent by catalytic upgrading. Among the oxygenate species contained in the bio-oil, the contents of 1,5-anhydro-d-mannitol and 1,4-anhydro-d-galacitol were reduced considerably by catalytic upgrading, whereas the proportions of furans and cyclopentanones were increased. The formation of high value-added aromatics was enhanced considerably by catalytic upgrading, which was attributed to the acid characteristics of the zeolite catalysts. HZSM-5 (SiO2/Al2O3=23), which had the strongest acid sites, showed the highest selectivity for aromatics production.

KW - Aromatics

KW - Catalytic pyrolysis

KW - Laminaria japonica

KW - Microporous zeolites

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JO - Energy

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Catalytic conversion of Laminaria japonica over microporous zeolites

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Keywords

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