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Dive into the research topics where Yukio Asami is active.

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Featured researches published by Yukio Asami.


Journal of The Japan Petroleum Institute | 2002

Research and Development of a Fluidized Bed Catalyst for the Production of Phthalic Anhydride and Commercialization Thereof. Part 3. Preparation and Catalytic Performance of TiO2-supported V2O5 Catalyst Having High Attrition Resistance.

Yukio Asami; Toshinao Aono; Mamoru Iwasaki; Noboru Hirooka; Tatsuya Nobusawa

近年, 無水フタル酸製造において, その原料事情によりナフタレンおよびo-キシレンに共用できる高機能触媒の開発が望まれている。この目的に適用できる耐摩耗性TiO2担持V2O5系流動触媒の開発例はこれまで報告されていない。本報では, 耐摩耗性に優れた微小球形の高活性, 高寿命の流動触媒の開発のため, スプレードライ法を用いる300°Cで焼成したときのアナターゼTiO2 (2θ=25.3°) の結晶子径が10nm以下となる水酸化チタンゲルを担体として用いる新規な触媒製造法を開発し, さらに第3成分の添加により流動触媒の組成および物性の適正化を検討した。その結果, 既報のSiO2担持V2O5系触媒の結果と異なり, 無水フタル酸生成にはK2SO4/V2O5<1 (重量比) の組成が有効であることがわかった。一定量のLa2O3の添加は担体アナターゼTiO2を安定化し, 活性•選択性を向上させること, 一方でB2O3はとくに流動触媒の耐摩耗性を向上させることが判明した。適正組成のTiO2担持V2O5系触媒はナフタレンおよびo-キシレン酸化のいずれにおいても無水フタル酸の生成に高活性を示した。さらに, 得られた適正組成触媒をメークアップ触媒としてナフタレンフィードで操業中の実装置に適用した結果, 従来のSiO2担持V2O5系触媒に比し約2/3のメークアップ量でも安定して無水フタル酸収率の向上が達成された。


Nippon Kagaku Kaishi | 1973

Formation of lsobutyl Methyl Ketone in Acetene Hydrogenation over Nickel on Titanium Carbide Catalyst

Masahide Okada; Yukio Asami; Fumio Watanabe

Catalytic properties of nickel supported on stoichiometric titanium carbide in acetone hydrogenation have been studied at 150C.Over the catalyst (I) which was rcduced with hydrogen after calcination in nitrogen isobutyl methyl ketone was formed as a minor product, whereas over the catalyst (II) which was reduced after calcination in air the ketone was formed predominantly along with a small amount of 2-propanol. X-Ray analysis showed the existence of nickel oxide in I in addition to metallic nickel and stoichiometric titanium carbide, whereas in asmall amount of titanium dioxide in rutile form existed in addition to the above species. Both nickel oxide on the carbide (III) and nickel on rutile (IV) exhibited some activity for the acetone hydrogenation; the main product was the alcohol over and the ketone over IV. Over unsupported nickel the ketone was not formed.It is concluded from the experimental results that the catalyst systems which consisted of nickel with or without its oxide and titanium carbide with or without titanium dioxide caused the simultaneous formation of the alcohol and the ketone in the hydrogenation of acetone.


Nippon Kagaku Kaishi | 1971

Double Promoting Effects by Aluminum Oxide and Potassium Oxide of Iron Oxide Catalyst for Dehydrogenation of Ethylbenzene

Masahide Okada; Yukio Asami; Yukibumi Goto

エチルベンゼンからスチレンの製造に対する酸化鉄触媒の Al2O3 と K2O による二重促進効果について調べた。酸化鉄触媒へ 6.6wt% 以下の Al2O3 を合体させるとスチレン収率が増大した。Al2O3 6.6wt% 含有酸化鉄触媒へ K2O 2.0wt% を添加するとその触媒選択性は 82% から 96% まで増大した。上記結果はピリジン化学吸着値とよく関係づけられた。比較実験から, Al2O3 と K2O を適当の割合にいれた本酸化鉄触媒は活性・安定性の点で Cr2O3 を含有する二種類の現用工業触媒に劣らないことがわかった。


Journal of The Japan Petroleum Institute | 1973

Vapor Phase Catalytic Synthesis of Aniline from Phenol and Ammonia

Yukio Asami; Jun-ichi Watanabe; Masahide Okada


Chemistry Letters | 1973

SELECTIVE FORMATION OF METHYL VINYL KETONE FROM ACETONE AND METHANOL WITH SILICA-MAGNESIA BASE CATALYST

Masahide Okada; Yukio Asami


Bulletin of The Japan Petroleum Institute | 1971

Kinetics of Catalytic Isomerization of o-Xylene on Silica-Alumina Catalyst Exchanged with Nickel-Ion

Masahide Okada; Katsuaki Ohsato; Yukio Asami


Archive | 1993

FLUIDIZED CATALYST FOR GAS-PHASE CATALYTIC OXIDATION OF DURENE

Yukio Asami; Susumu Fujii; Yoshihiro Naruse; Katsuhiko Takagi


Nippon Kagaku Kaishi | 1973

Catalytic Methylation of α -Picoline with Methanol

Masahide Okada; Kazuo Uoya; Yukio Asami


Nippon Kagaku Kaishi | 1971

Selective Catalytic Dehydrogenation of n-Heptane to Heptenes

Masahide Okada; Yukio Asami


Nippon Kagaku Kaishi | 1971

Vapour Phase Disproportionation of o-Cresol on Fluorinated Aluminas

Masahide Okada; Yukio Asami; Koichi Saito

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Toshinao Aono

Kawasaki Steel Corporation

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Noboru Hirooka

Kawasaki Steel Corporation

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Susumu Fujii

Kawasaki Steel Corporation

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Tatsuya Nobusawa

Kawasaki Steel Corporation

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Yusaku Arima

Kawasaki Steel Corporation

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Mamoru Iwasaki

Kawasaki Steel Corporation

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