Secondary cracking suppression through Pt/H-BEA: n-Hexadecane hydrocracking

Production of Sustainable Aviation Fuel by Hydrocracking of n-Heptadecane Using Pt-Supported Y-Zeolite-Al2O3 Composite Catalysts

“…Hydrocracking of n -hexadecane using supported Pt and Pd catalysts in the literature could be compared with our data (Table ). ,− In these catalysts, Pt or Pd loading amount was in the range of 0.5–1 wt %. Supports were MCM-41, ZSM-22, heteropolymolybdate/MCM-41 composite, β-zeolite, dealuminated HY-zeolite, and SBA-15/β-zeolite composite .…”

“… ,− In these catalysts, Pt or Pd loading amount was in the range of 0.5–1 wt %. Supports were MCM-41, ZSM-22, heteropolymolybdate/MCM-41 composite, β-zeolite, dealuminated HY-zeolite, and SBA-15/β-zeolite composite . Some of these reports dealt with isomerization, and the jet fuel yields were rather low.…”

“…The hydrocracking catalyst needs to arrange the cracking and isomerization abilities in order to achieve high selectivity for the intermediate fraction. For this reason, the preparation of catalysts which can regulate cracking activity by changing the type, content, and SiO 2 /Al 2 O 3 ratio of a zeolite in the catalyst has been investigated. − Although n -hexadecane has usually been used so far, a high yield of jet fuel fraction has not been achieved. Further studies of n -heptadecane are very few …”

“…In recent years, many studies have been reported on the production of jet fuel or other fractions by hydrocracking and isomerization reactions using hydrocarbons from n -C15 to n -C18 as a model of hydrotreated fat or FT wax, − biodiesel of fatty acid methyl ester and fats, etc. − because jet fuel is considered to be highly likely to be liquid in the future due to various factors. The hydrocracking catalyst needs to arrange the cracking and isomerization abilities in order to achieve high selectivity for the intermediate fraction.…”

Shape Selectivity of AEL Channels for Anomalously Facilitating Biojet Fuel Production from Long-Chain n-Alkane Hydrocracking

“…Primary cracking of green diesel fractions produces target jet fuel fractions, while second cracking of heavy cracking products impaires jet fuel yields. 2,22,23 It means that in addition to the aforementioned selective C−C cleavage (i.e., preferential cracking near the carbon chain end) in the primary cracking, suppressing the second cracking of the jet fuel fractions is required to maximize jet fuel production. The relatively small 10-MR channels lead to slow mass transfer, causing second cracking of heavy cracking products and excessive formation of light alkanes.…”