| 摘要 |
PURPOSE:A hydrocarbon fraction such as petroleum is broght into contact with a catalyst mainly composed of a zeolite having a specific X-ray diffraction pattern and mesitylene adsorption in the presence of hydrogen to effect dewaxing of high recovery rate economically and advantageously. CONSTITUTION:A hydrocarbon fraction is brought into contact with a catalyst mainly composed of a zeolite which has an X-ray diffraction pattern shown in the table (d is lattice interval; 100 I/I0 is relative intensity; VS means very strong, S, strong; M, medium) and more than 1.6wt% of mesitylene adsorption in the presence of hydrogen. The zeolite can be preferably represented by the formula: (1.0+ or -0.2)M2/nO.Al2O3.XSiO2.YH2O [M is alkali or alkaline earth me tal; n is valency of M; X is 15-60; Y is 0-25]. EFFECT:The above catalyst permits the long-hours of use with high activity.
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