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Article

Optimization of Nickel-Based Catalyst Composition and Reaction Conditions for the Prevention of Carbon Deposition in Toluene Reforming

1
School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan, Gyeonbuk 38541, Korea
2
Institute for Advanced Engineering, 175 Goan-ro, Baegam-myeon, Yongin-si, Gyeongki-do 17180, Korea
3
Gyeongbuk Institute for Regional Program Evaluation, 27 Sampoong-ro, Gyeongsan, Gyeongbuk 38542, Korea
*
Author to whom correspondence should be addressed.
Energies 2019, 12(7), 1307; https://doi.org/10.3390/en12071307
Received: 31 December 2018 / Revised: 21 March 2019 / Accepted: 2 April 2019 / Published: 5 April 2019
In this study, nickel-based reforming catalysts were synthesized for the reforming of toluene, a major component of thinners and widely used as an organic solvent. The reaction characteristics of these catalysts were investigated by both steam reforming and auto-thermal reforming. Reforming aromatic hydrocarbons like toluene to produce synthesis gas is difficult because carbon deposition also occurs, and the deposition of carbon lowers the activity of the catalyst and causes a pressure drop during the reaction process. In order to maintain a stable reforming process, a catalytic reaction technique capable of suppressing carbon deposition is required. Steam reforming and auto-thermal reforming of toluene were used in this study, and the temperature of the catalyst bed was remarkably reduced, due to a strong endothermic reaction during the reforming process. By using scanning electric microscopy (SEM), X-ray diffraction (XRD), and temperature-programmed oxidation analysis, it is shown that carbon deposition was markedly generated due to a catalyst bed temperature decrease. In this study, optimum conditions for catalyst composition and the reforming reaction are proposed to suppress the formation of carbon on the catalyst surface, and to remove the generated carbon from the process. In addition, ceria and zirconia were added as catalytic promoters to inhibit carbon deposition on the catalyst surface, and the carbon deposition phenomena according to the catalyst’s promoter content were investigated. The results showed that the carbon deposition inhibition function of CeO2, via its redox properties, is insignificant in steam reforming, but is notably effective in the auto-thermal reforming of toluene. View Full-Text
Keywords: toluene reforming; carbon deposition; steam reforming; auto-thermal reforming toluene reforming; carbon deposition; steam reforming; auto-thermal reforming
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MDPI and ACS Style

Park, N.-K.; Lee, Y.J.; Kwon, B.C.; Lee, T.J.; Kang, S.H.; Hong, B.U.; Kim, T. Optimization of Nickel-Based Catalyst Composition and Reaction Conditions for the Prevention of Carbon Deposition in Toluene Reforming. Energies 2019, 12, 1307. https://doi.org/10.3390/en12071307

AMA Style

Park N-K, Lee YJ, Kwon BC, Lee TJ, Kang SH, Hong BU, Kim T. Optimization of Nickel-Based Catalyst Composition and Reaction Conditions for the Prevention of Carbon Deposition in Toluene Reforming. Energies. 2019; 12(7):1307. https://doi.org/10.3390/en12071307

Chicago/Turabian Style

Park, No-Kuk, Young J. Lee, Byung C. Kwon, Tae J. Lee, Suk H. Kang, Bum U. Hong, and Taejin Kim. 2019. "Optimization of Nickel-Based Catalyst Composition and Reaction Conditions for the Prevention of Carbon Deposition in Toluene Reforming" Energies 12, no. 7: 1307. https://doi.org/10.3390/en12071307

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