The hydrogenation of naphthalene with platinum/alumina-aluminum phosphate catalysts

Journal Article · Fri Sep 01 04:00:00 EDT 1995 · Industrial and Engineering Chemistry Research

DOI:https://doi.org/10.1021/ie00048a005· OSTI ID:183061

Huang, T C; Kang, B C ^[1]

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1. National Cheng Kung Univ., Tainan (Taiwan, Province of China). Dept. of Chemical Engineering

Alumina-aluminum phosphate (AAP) was used as a noble metal support, and Pt/AAP was used as a hydrogenation catalyst to reduce the aromatic content in diesel fuels. Naphthalene dissolved in n-hexadecane was used as a model compound to simulate the aromatics in diesel fuels for the hydrogenation activity test. The experimental results indicated that the Pt/alumina-aluminum phosphate catalyst had a better hydrogenation activity and lower cis-Decalin selectivity than Pt/{gamma}-Al{sub 2}O{sub 3} catalyst due to the higher acidity of the AAP support than that of the {gamma}-Al{sub 2}O{sub 3} support. The catalysts Pt/AAP, at 6 < Al/P < 10, have the highest hydrogenation activity and the lowest cis-Decalin selectivity of all Pt/AAPx catalysts. By controlling the Al/P ratio, variable pore size and surface area of AAP supports have been obtained. The high surface area and large pore size of Pt/AAP catalyst can be used for aromatic hydrogenation with good activity and an effective diffusion coefficient. When phosphorus was added to Pt/{gamma}-Al{sub 2}O{sub 3} catalyst, it improved the hydrogenation activity but reduced the cis-Decalin selectivity for the naphthalene hydrogenation reaction system. However, the improvement of activity was not as good as that for Pt/AAP catalyst and too high a phosphorus content (Al/P < 20) of Pt/{gamma}-Al{sub 2}O{sub 3} was poisonous to the hydrogenation activity and cis-Decalin selectivity.

• Sponsoring Organization: USDOE
• OSTI ID: 183061
• Journal Information: Industrial and Engineering Chemistry Research, Journal Name: Industrial and Engineering Chemistry Research Journal Issue: 9 Vol. 34; ISSN IECRED; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
ALUMINIUM OXIDES
ALUMINIUM PHOSPHATES
CATALYSIS
CATALYST SUPPORTS
CATALYTIC EFFECTS
DIESEL FUELS
HYDROGENATION
NAPHTHALENE
ORGANIC SOLVENTS
PLATINUM