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- W2332172627 abstract "Though many studies have been made on reforming of naphtha and pure hydrocarbons over Pt-Cl-Al2O3 type catalysts, very few of them report indetails on extensive reaction conditions for reforming of paraffinic hydrocarbons. We studied the details of n-Heptane Reforming Reactions and the effect of high pressure hydrogen in the reforming reaction. Reforming experiments were carried out with a micro-reactor, which was packed with catalyst of 0.605 to 1.007g and directly connected with a gaschromatograph. Reaction temperature: 500, 520, 540°C, total pressure: 10.7, 20.3, 35.0, 44.5atm, Liquid Hourly Space Velocity: 2.43-17.76vol/vol•hr and hydrogen to feed supply mole ratios: 5, 10, 15.Nine kinds of aromatics and naphthenes (by cyclization), six kinds of heptane-isomers (by isomerization), and thirteen kinds of paraffinic hydrocarbons from methane to hexanes (by hydrocracking) were analyzed. The total conversion of n-heptane increases with the rise in temperature, total pressure and the contact time.The conversion of n-heptane to cyclic-compounds generally increases in proportion to the rise in temperature, total pressure and the contact time, the maximum value of cyclization conversion being indicated at the total pressure of 35 to 40 atmospheres. Though the conversion of n-heptane to heptane-isomers is influenced complicately by each factor of reaction conditions, the variable ranges of the conversion are divided to three classes of Before Max. Values, Max. Values and After Max. Values. The operating conditions indicating max. values in isomerization-conversion transfer to lower temperatures and the shorter contact time in proportion to the rise in total pressure, but at the total pressure of 10atm and lower no max. values are indicated. The conversion of n-heptane to the lower paraffinic hydrocarbons increases in proportion to the rise in temperature, total pressure and the contact time. Rates of conversion of n-heptane to methane through hexanes are: (QC3H8≈QC4H10>QC5H12≈QC2H6>QC6H14_??_QCH4). Therefore, hydrocracking reaction of n-heptane takes place mainly on the acidic-active-sites of catalyst. The conversion of each reaction in n-heptane reforming generally increases in proportion to the rise in the total pressure before max. values." @default.
- W2332172627 created "2016-06-24" @default.
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- W2332172627 date "1970-01-01" @default.
- W2332172627 modified "2023-10-04" @default.
- W2332172627 title "Pure Hydrocarbon Reforming Reactions with Platinum Type Petroleum Reforming Catalysts (Part 2)" @default.
- W2332172627 doi "https://doi.org/10.1627/jpi1958.13.448" @default.
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