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http://dx.doi.org/10.7464/ksct.2019.25.2.099

Catalytic Hydrogenation of Triglyceride in a Semi-batch Reactor  

An, Jae-Yong (Department of Chemical Engineering, Kongju National University)
Lee, Choul-Ho (Department of Chemical Engineering, Kongju National University)
Jeon, Jong-Ki (Department of Chemical Engineering, Kongju National University)
Publication Information
Clean Technology / v.25, no.2, 2019 , pp. 101-106 More about this Journal
Abstract
The aim of this study is to investigate the feasibility of an Ni-SA catalyst, which was prepared from nickel, kieselguhr, and alumina, for the hydrogenation of triglyceride in a bench-scale reactor. Ni-SA powders were prepared by precipitating nickel precursors on a silica and alumina support. The powder was reduced in a hydrogen flow, mixed with a saturated palm oil, and then cooled to prepare an Ni-SA catalyst tablet. The sizes of NiO crystals of a commercial Pricat catalyst and the Ni-SA catalyst prepared in this study were $35{\AA}$ and $38{\AA}$, respectively. The pore volume and pore size of the Ni-SA catalyst was much larger than the pore volume and pore size of the Pricat catalyst. In addition, the average particle size of the Ni-SA catalyst was much smaller than that of the Pricat catalyst. The triglyceride hydrogenation reaction was carried out in a semi-batch reactor using catalysts impregnated with oil and molded into tablets. It was found that the Ni-SA catalyst was superior to the commercial Pricat catalyst in triglyceride hydrogenation, which could be ascribed to the raw material and the products being less influenced by the diffusion resistance in the pores of the Ni-SA catalyst. The Ni-SA catalyst prepared in this study has the potential to replace the Pricat catalyst as a catalyst for use in the commercial process for hydrogenation of triglyceride.
Keywords
Nickel; Catalyst; Triglyceride; Hydrogenation; Semi-batch reactor;
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