1-09　ZSM-5-TiO₂-Al₂O₃複合担体担持PtNiMo触媒を用いた油脂の環化脱水素化分解

抄録

In recent years, there is concern about the depletion of fossil fuels, so there is a demand for the production of clean carbon-neutral transportation fuels. Biomass fuel as a raw material is attracting attention because it can be considered that its use does not accompany CO₂ emissions as it grows up with the absorption of CO₂. In this study, hierarchical composite supports were prepared using microporous ZSM-5 and mesoporous Al₂O₃ and TiO₂, and then Pt, Ni, and Mo were added into the prepared composite oxides. The resultant PtNiMo catalysts were used in dehydrocyclization-cracking of soybean oil to produce aromatics and liquids fuels selectively. It was confirmed that the reaction proceeded by two routes of decarboxylation and decarbonylation at 580°C, and therefore the hydrogen consumption could be suppressed in the reaction. Pt/NM/Z(24)75Ti(600sg) produced 68 wt% of the liquid fuel fraction with C5-C18. Pt/NM/Z(24)60Ti, Pt/NM/Z(24)75Ti(500sg) and Pt/NM/Zn(18)Z(24)60Ti showed the highest CO and CO₂ selectivity of 11%. Pt/NM/Z(24)30Al30Ti and Pt/NM/Z(24)75Al(600sg) showed the highest aromatics yield of 17wt%.