초록 ▼

Disclosed herein is a catalyst for xylene isomerization, including: a carrier including a zeolite, having a molar ratio of silica to alumina of 20˜100, impregnated with or mixed with a metal salt (I) having an amount of a metal component of 0.05˜5.0 wt % relative to a zeolite, and an inorganic binde

Disclosed herein is a catalyst for xylene isomerization, including: a carrier including a zeolite, having a molar ratio of silica to alumina of 20˜100, impregnated with or mixed with a metal salt (I) having an amount of a metal component of 0.05˜5.0 wt % relative to a zeolite, and an inorganic binder, in which an amount of the zeolite is 10˜90 wt % based on the total amount of the carrier, wherein the carrier is supported 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 is supported with the VII 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, and a method of producing the catalyst. The catalyst for xylene isomerization is advantageous in that, when xylene or C8 aromatic compounds are isomerized using the catalyst, the ethylbenzene conversion is increased while the xylene loss is decreased, compared to conventional technologies.

대표청구항 ▼

The invention claimed is: 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 inorgan

The invention claimed is: 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, andthe 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.