title: Catalytic pyrolysis of mandarin residue from the mandarin juice processing industry.
abstract: In this study, the catalytic pyrolysis of mandarin residue from the mandarin juice processing industry was carried out using pyrolysis gas chromatography/mass spectroscopy and employing microporous zeolite catalysts, HZSM-5 (SiO2/Al2O3=23 and 80) and HBeta (SiO2/Al2O3=25). The effect of acidity of the catalyst was investigated by comparing the activity of two HZSM-5 catalysts with different SiO2/Al2O3 ratios. The effect of catalyst structure was explored by comparing the results obtained using HZSM-5 (23) and HBeta. Most oxygenates produced from non-catalytic pyrolysis were removed by catalytic upgrading, whereas the yields of mono-aromatics, which are important feedstock materials for the chemical industry, increased considerably, improving the quality of the bio-oil produced. HZSM-5 (23), having the highest acidity among the catalysts used in this study, showed superior catalytic activity to those of HZSM-5 (80) and HBeta. Pt/HZSM-5 (23) and Ga/HZSM-5 (23) resulted in an even higher yield of aromatics.
authors.affiliation: Graduate School of Energy and Environmental System Engineering, University of Seoul, Seoul 130-743, Republic of Korea.
authors.forename: Jeong Wook
authors.initials: JW
authors.lastname: Kim
authors.forename: Sung Hoon
authors.initials: SH
authors.lastname: Park
authors.forename: Jinho
authors.initials: J
authors.lastname: Jung
authors.forename: Jong-Ki
authors.initials: JK
authors.lastname: Jeon
authors.forename: Chang Hyun
authors.initials: CH
authors.lastname: Ko
authors.forename: Kwang-Eun
authors.initials: KE
authors.lastname: Jeong
authors.forename: Young-Kwon
authors.initials: YK
authors.lastname: Park
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry; D001628:Beverages / Q000032:analysis*; D056804:Biofuels / Q000032:analysis; D002384:Catalysis; D002957:Citrus / Q000737:chemistry*; D005525:Food-Processing Industry; D005708:Gallium / Q000737:chemistry; D006838:Hydrocarbons / Q000032:analysis; D007220:Industrial Waste / Q000032:analysis*; D028221:Larix / Q000737:chemistry; D010984:Platinum / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry; D013696:Temperature; D017641:Zeolites / Q000737:chemistry
chemical_list: D056804:Biofuels; D006838:Hydrocarbons; D007220:Industrial Waste; D017641:Zeolites; D010984:Platinum; D012822:Silicon Dioxide; D005708:Gallium; D000537:Aluminum Oxide