PRODUCTION OF PENTASIL-TYPE ALUMINOSILICATE ZEOLITE

    公开(公告)号:JPS62256718A

    公开(公告)日:1987-11-09

    申请号:JP10130786

    申请日:1986-05-01

    Abstract: PURPOSE:To obtain the title zeolite having excellent para-selectivity and high catalytic activity by adding hydrocarbons into a reaction mixture consisting of a silica source, an alumina source, an alkali source, tartaric acid, and water. CONSTITUTION:An alkali source such as NaOH and tartaric acid are dissolved in water, an alumina source such as an aq. soln. of sodium aluminate is added, and a uniform soln. is formed. A silica source such as silicic acid powder and hydrocarbons such as cyclohexane are gradually added to the liq. mixture while agitating to regulate the reaction mixture. The reaction mixture is charged in an autoclave, etc., hermetically sealed, and heated to carry out a reaction. High-purity pentasil-type aluminosilicate zeolite having excellent formability can be obtained by this method.

    METHOD FOR DEWAXING HYDROCARBON FRACTION

    公开(公告)号:JPS60135486A

    公开(公告)日:1985-07-18

    申请号:JP24849283

    申请日:1983-12-24

    Abstract: PURPOSE:To dewax efficiently a hydrocarbon fraction and to lower pour point, by bringing the hydrocarbon fraction in the presence of hydrogen into contact with a catalyst composed of a mixture of a mordenite type zeolite and a specified pentacil type zeolite. CONSTITUTION:A mordenite type zeolite is uniformly mixed with a pentacil type zeolite having an X-ray diffraction pattern (S being intense, VS being very intense, M being medium intense) shown in Table. The monovalent alkali metal ion of the resulting zeolite mixture powder is subjected to an ion exchange treatment with hydrogen ion or ammonium ion to thereby convert it into an acid type. Pref. further a binder such as alumina sol is added thereto and the mixture is shaped into a particle having the desired size, dried and calcined to obtain a catalyst. A hydrocarbon fraction such as gas oil or kerosene is brought into contact with the catalyst in the presence of hydrogen at 200-500 deg.C to dewax it.

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