Hydroisomerization and hydrocracking of n-heptane and n-hexadecane on solid superacids

Journal Article · · Energy and Fuels; (USA)

DOI:https://doi.org/10.1021/ef00022a007· OSTI ID:6218968

Wen, M Y; Wender, I; Tierney, J W ^[1]

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1. Univ. of Pittsburgh, PA (USA)

Formation of highly branched long-chain paraffins and highly isomerized shorter chain paraffins from conversion of heavier n-paraffinic fractions is of interest for the production of high-octane gasoline, jet fuel, and lubricants. In this study, n-hexadecane was hydroisomerized and hydrocracked on a platinum-doped solid superacid, Pt/ZrO{sub 2}/SO{sub 4}{sup 2{minus}}, in a batch horizontal shaking microreactor system at rather mild conditions: 130-170{degree}C, 300 psig initial hydrogen pressure, and 15-75 min reaction time. A moderate conversion level, over 65 wt%, was achieved at temperatures above 140{degree}C, which is significantly lower than Pt-doped acid catalysts in similar studies. Up to 70% of the hydroisomerized products are multibranched isohexadecanes. For the hydrocracked products, a very high selectivity, more than 90%, to isoparaffins resulted. Less than 1 wt% of platinum on the surface was very effective in preventing catalyst deactivation under low hydrogen pressure.

• OSTI ID: 6218968
• Journal Information: Energy and Fuels; (USA), Journal Name: Energy and Fuels; (USA) Vol. 4:4; ISSN 0887-0624; ISSN ENFUE
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020500* -- Petroleum-- Products & By-Products
ALKANES
CATALYSTS
CHALCOGENIDES
CHEMICAL REACTIONS
CRACKING
DATA
DATA ANALYSIS
DECOMPOSITION
ELEMENTS
EXPERIMENTAL DATA
HEPTANE
HEXADECANE
HYDROCARBONS
HYDROCRACKING
INFORMATION
ISOMERIZATION
MEASURING INSTRUMENTS
MEASURING METHODS
METALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM
PLATINUM METALS
PYROLYSIS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES