Showa Denko K.k.

Peng Wu

Katsuyuki Tsuji

Takashi Tatsumi

Wataru Oguchi

Katsuyuki c/o Corporate R & D Center Tsuji

A modified layered metallosilicate material is produced by a process comprising the following first to fifth steps: (First Step) a step of heating a mixture containing a template compound, a boron compound, a silicon-containing compound and water to thereby obtain a precursor (A); (Second Step) a step of acid-treating the precursor (A) obtained in the first step, to thereby obtain a precursor (B); (Third Step) a step of heating the precursor (B) obtained in the second step in the presence of a swelling agent so as to swell the precursor (B) to thereby obtain a precursor (C); (Fourth Step) a step of modifying the manner of the stacking between layers in the precursor (C) obtained in the third step, to thereby obtain a precursor (D); and (Fifth Step) a step of calcining the precursor (D) obtained in the fourth step, to thereby obtain a modified layered metallosilicate material.

Modified layered metallosilicate material and production process thereof

A process for easily synthesizing a zeolite substance containing an element having a large ionic radius in the framework at a high ratio. This process comprises the following first to fourth steps: First Step: 

MWW type zeolite substance, precursor substance therefor, and process for producing these substances

A titanosilicate represented by the following compositional formula (1), wherein in the infrared absorption spectrum measured in the dehydrated state, the absorption spectrum has an absorption band having a relative maximum value at 930&#xb1;15 cm:xTiO.(1&#x2212;x)SiO&#x2003;&#x2003;Compositional Formula (1)(wherein x is from 0.0001 to 0.2).

Titanosilicate, process for its production, and its use in producing oxidized compound

A crystalline titanosilicate catalyst which is usable as a catalyst in the oxidation reaction of a compound having a carbon-carbon double bond and at least one other functional group, a process for producing the catalyst, and a process for producing an oxidized compound by an oxidation reaction using the catalyst. It has been found that a crystalline titanosilicate having a structural code of MWW effectively functions as a catalyst in an oxidation reaction of a compound having a carbon-carbon double bond and at least one other functional group wherein the carbon-carbon double bond of the compound is oxidized by using a peroxide as an oxidizing agent, thereby to highly selectively provide an intended oxidized compound.

Crystalline MWW-type titanosilicate catalyst for producing oxidized compound, production process for the catalyst, and process for producing oxidized compound by using the catalyst

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Yokohama, Japan

Peng Wu