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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 34, Number 11
BKCSDE 34(11)
November 20, 2013 

Catalytic Gasification of Mandarin Waste Residue using Ni/CeO2-ZrO2
Seong-Soo Kim, Jeong Wook Kim, Sung Hoon Park, Sang-Chul Jung, Jong-Ki Jeon, Changkook Ryu, Young-Kwon Park*
Hydrogen, Waste mandarin residue, Catalytic gasification, Ni/CeO2-ZrO2
Catalytic gasification of mandarin waste residue was carried out using direct and indirect catalyst-contact methods for the first time. In the indirect method, non-catalytic reaction in a reactor was followed by catalytic upgrading of vapor product in another reactor. Two different catalysts, Ni/γ-Al2O3 and Ni/CeO2-ZrO2, were employed. CeO2-ZrO2 support was prepared using hydrothermal synthesis in supercritical water. The catalysts were characterized by H2-temperature programmed reduction and Brunauer-Emmett-Teller analyses. Under the condition of equivalent ratio (ER) = 0, the indirect catalyst-contact method led to a higher gas yield than the direct method. Under ER = 0.2, the yield of biogas obtained over Ni/CeO2-ZrO2 was higher than that obtained over Ni/γ-Al2O3. Also, the coke formation of Ni/CeO2-ZrO2 was lower than that of Ni/γ-Al2O3. Such results were attributed to the higher reducibility and better lattice oxygen mobility of Ni/CeO2-ZrO2, which were advantageous for partial oxidation reaction.
3387 - 3390
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