Production Method For Modified Aluminosilicate, Production Method For Catalyst Including Modified Aluminosilicate, Production Method For Aromatic Polyhydroxide Compound Using Said Catalyst, And Modified Aluminosilicate

Abstract: Provided are: a production method for a modified aluminosilicate that makes it possible to highly selectively produce a hydroquinone via a reaction between a phenol and hydrogen peroxide, with industrially advantageous conditions; a production method for a catalyst that is for producing an aromatic dihydroxide compound and that includes the modified aluminosilicate; a production method for an aromatic dihydroxide compound that uses the catalyst; and a modified aluminosilicate. A production method for an aluminosilicate according to the present invention comprises: a first step for preparing a liquid obtained by contact between a metal compound (AL) containing aluminum and oxygen and silica in the form of a sol containing water, and obtaining an aluminosilicate in which the molar ratio (HMR) between water and silica is in a specific range; a second step for treating, with acid, the aluminosilicate obtained in the first step; a third step for performing primary firing with respect to the treated product obtained in the second step; and a fourth step for bringing into contact the primary fired product obtained in the third step and a liquid containing one or more elements selected from the group consisting of group 4 elements and group 5 elements of the periodic table, and thereafter performing drying and secondary firing. The metal compound (AL) is preferably a zeolite. The first step preferably includes a step for removing the water.

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