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Применить Всего найдено 5. Отображено 5.
06-09-2013 дата публикации

METHOD FOR PRODUCING ACRYLONITRILE

Номер: WO2013129363A1
Автор: WATANABE Hirokazu, YANAGITA Motoo, KARASUDA Takashi, NISHIDA Kazufumi, MIYAKI Kenichi
Принадлежит:

This method for producing acrylonitrile is characterized by including a gas-phase contact ammoxidation step for causing a starting material gas containing propylene, molecular oxygen, and ammonia to contact a fluidized bed catalyst to cause gas-phase contact ammoxidation, thus obtaining acrylonitrile, the fluidized bed catalyst being a catalyst containing molybdenum and bismuth, and the gas-phase contact ammoxidation step being performed while maintaining the amount of ammonia adsorption per specific surface area (m2/g) of the fluidized bed catalyst in the range of 0.05-0.6 μmol/m2. By means of the method for producing acrylonitrile, it is possible to stably maintain a high yield of acrylonitrile over the long term.

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Номер записи: 1
08-06-2017 дата публикации

METHOD FOR PRODUCING CATALYST FOR (METH)ACRYLIC ACID PRODUCTION AND METHOD FOR PRODUCING (METH)ACRYLIC ACID

Номер: WO2017094468A1
Автор: WATANABE, Takuro, SUGIYAMA, Mieji, MIYAKI, Kenichi, TAGAWA, Yuuichi, TAKEDA, Akio, KATOU, Yuuki, SATOU, Yuuta, HINO, Tomomichi, TOYODA, Takafumi, TANAKA, Shingo
Принадлежит:

The purpose of the present invention is to provide a method for producing a catalyst that can reduce uneven quality in a catalyst molded body of a catalyst for (meth)acrylic acid production. Provided is a method for producing a catalyst for (meth)acrylic acid production, the method including: (1) a step of mixing a contactant of a catalyst component-containing catalyst precursor, a liquid and a binder so as to produce a mixture; (2) a step of molding the mixture so as to produce a molded body; and (3) a step of heat treating the molded body. In the period after producing the contactant in step (1) and before heat treating the molded body in step (3), at least one of the contactant, the mixture and the molded body is held for a total of 2 hours or more at a temperature of 10°C or higher, and if the liquid content in the mixture, which is calculated from the charged quantities in step (1), is denoted by α% and the liquid content in the mixture immediately before carrying out the molding in ...

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Номер записи: 2
07-01-2016 дата публикации

METHOD FOR PRODUCING ISOBUTYLENE, METHOD FOR PRODUCING METHACRYLIC ACID, AND METHOD FOR PRODUCING METHYL METHACRYLATE

Номер: WO2016002649A1
Автор: AKIHARA, Shuji, SUZUKI, Tatsuya, YASUKAWA, Toshiya, TAKEDA, Akio, MIYAKI, Kenichi, OOYACHI, Ken
Принадлежит:

Provided is a method with which it is possible to highly selectively produce isobutylene by a dehydration reaction of isobutanol. A method for producing isobutylene by dehydrating isobutanol, wherein the method for producing isobutylene comprises dehydrating isobutanol in the presence of an organic acid and/or an organic acid ester in the reaction system; a method for producing methacrylic acid from the resulting isobutylene; and a method for further producing methyl methacrylate.

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Номер записи: 3
06-09-2013 дата публикации

METHOD FOR PRODUCING ACRYLONITRILE

Номер: WO2013129424A1
Автор: WATANABE Hirokazu, YANAGITA Motoo, KARASUDA Takashi, NISHIDA Kazufumi, MIYAKI Kenichi
Принадлежит:

The present invention pertains to a method that is for producing acrylonitrile and that is characterized by containing a gas-phase contact ammoxidation step for performing gas-phase contact ammoxidation by causing a starting material gas containing propylene, molecular oxygen, and ammonia to contact a fluidized bed catalyst, thus obtaining acrylonitrile, the fluidized bed catalyst being a catalyst containing iron, antimony, and tellurium, and the gas-phase contact ammoxidation step being performed while maintaining the ammonia adsorption quantity per specific surface area (m2/g) of the fluidized bed catalyst in the range of 0.01-0.22 μmol/m2. By means of the method for producing acrylonitrile, it is possible to stably maintain a high acrylonitrile yield over the long term.

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Номер записи: 4
12-11-2015 дата публикации

METHOD FOR PRODUCING ISOBUTYLENE FROM ISOBUTANOL

Номер: WO2015170686A1
Автор: YASUKAWA, Toshiya, SUZUKI, Tatsuya, TAKEDA, Akio, NINOMIYA, Wataru, MIYAKI, Kenichi, OOYACHI, Ken, AKIHARA, Shuji
Принадлежит:

The purpose of the present invention is to provide a method that can produce, with high yield or high selectability, isobutylene by means of isobutanol dehydration-reaction. An isobutylene production method of a first embodiment of the present invention is a method for producing isobutylene by means of isobutanol dehydration-reaction, wherein isobutanol is reacted using a catalyst for which the BET specific surface area is within the range of 60m2/g-175m2/g, and the reaction is carried out under a reaction pressure of 50kPa-750kPa as the absolute pressure. An isobutylene production method of a second embodiment of the present invention includes: using a catalyst which is filled into a reaction chamber and for which the particle diameters of at least 90 mass% of the catalyst are within the range of 700μm-10000μm; setting the isobutanol concentration within a supplied reaction gas to 30 vol%-85vol%; setting the weight hourly space velocity (WHSV)of the isobutanol to 0.175h-1-20h-1; and reacting ...

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Номер записи: 5