Patent ID: 8030239
Filing Date: 2011-10-04
Classification: B01J,C07C,Y02P

Abstract:
1. A method of producing a catalyst for xylene isomerization, comprising the steps of: (i) mixing a metal salt (I) having an amount of a metal component of 0.05˜5.0 wt % relative to a zeolite with the zeolite having a molar ratio of silica to alumina of 20˜100 and an inorganic binder to form a mixture powder so that an amount of the zeolite based on the total amount of the powder mixture is 10˜90 wt %; and (ii) supporting the mixture powder with a VIII group metal such that an amount of the VIII group metal is 0.001˜3.0 wt % based on a total amount of the catalyst, or supporting the mixture powder with the VIII group metal additionally supported with tin, bismuth or lead such that an amount of the tin, bismuth or lead is 0.01˜5.0 wt % based on the total amount of the catalyst, wherein the zeolite is selected from the group consisting of ZSM-5, ZSM-8, ZSM-11, ZSM-12, ZSM-23, ZSM-35, ZSM-48, SSZ-46, TS-1, TS-2, mordenite, and Beta, and the metal salt (I) is selected from consisting of beryllium nitrate, beryllium halide, beryllium acetate, beryllium naphthenate, beryllium gluconate, beryllium citrate, beryllium acetylacetonate, beryllium carbonate, beryllium formate, beryllium sulfate, beryllium hydroxide, magnesium nitrate, magnesium halide, magnesium acetate, magnesium naphthenate, magnesium gluconate, magnesium citrate, magnesium acetylacetonate, magnesium carbonate, magnesium formate, magnesium sulfate, magnesium hydroxide, calcium nitrate, calcium halide, calcium acetate, calcium naphthenate, calcium gluconate, calcium citrate, calcium acetylacetonate, calcium carbonate, calcium formate, calcium sulfate, calcium hydroxide, barium nitrate, barium halide, barium acetate, barium naphthenate, barium gluconate, barium citrate, barium acetylacetonate, barium carbonate, barium formate, barium sulfate, and barium hydroxide.