RESUMO
Tetrahydrotricyclopentadine (THTCPD) has been used as a fuel with a high energy density. THTCPD is produced by the hydrogenation of tricyclopentadiene (TCPD). In this study, Ru/nanoporous silica catalysts are utilized as a catalyst for TCPD hydrogenation. Ru/KIT-6 and Ru/SBA-15 show significantly higher activity compared to outcomes over the Ru/kieselguhr catalyst during TCPD hydrogenation. The nanoporous structures of Ru/KIT-6 and Ru/SBA-15 help to overcome the diffusion limitations of reactants and products during the TCPD hydrogenation process. In addition to the diffusion factors, the distribution of Ru crystallites on the support plays an important role in the TCPD hydrogenation activity.
RESUMO
The objective of this study is to evaluate the catalytic potential of PtMg/Al-KIT-6 during the hydroupgrading of a mixture composed of C15-C18 alkane as a model compound of bio-oil obtained by a hydrodeoxygenation of palm oil. Al-KIT-6 was prepared through a post-alumination method using KIT-6, after which platinum and magnesium precursors were impregnated onto the synthesized Al-KIT-6. PtMg/Al-KIT-6 catalysts were shown to have a well-arranged mesoporous structure, a large surface area, and a large pore size. The jet-fuel yield (55-59%) in the hydroupgrading of the long-chain n-alkane mixture over PtMg/Al-KIT-6 catalysts was much higher than that over the PtMg/KIT-6 catalyst, which could be ascribed to the higher number of acid sites of the PtMg/Al-KIT-6 catalysts. The highest isomer selectivity of the PtMg/Al-KIT-6(20) catalyst can be attributed to the strong acidity as well as the abundance of acid sites. PtMg/Al-KIT-6 catalysts can be effective catalysts for producing jet fuel through the hydroupgrading of bio-oil.
