Kinetic study on hydrogenation of isoquinoline over supported ruthenium catalysts.

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概要

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• The hydrogenation of isoquinoline (<B>1</B>) to isomeric decahydroisoquinoline (<B>4</B>) via 1,2,3,4-tetrahydroisoquinoline (<B>2</B>) or 5,6,7,8-tetrahydroisoquinoline (<B>3</B>) was kinetically studied over supported ruthenium catalysts under 50–100 atm hydrogen pressure at 135–170 °C. The results showed that the reaction proceeds mainly via <B>2</B> over ruthenium on carbon, and via <B>2</B> and <B>3</B> competitively over ruthenium on alumina. Such reaction features are explained from the view points of their adsorption and the activation of the molecules on the catalysts based on quantum chemical indices. The acidic nature of alumina support exhibited a preference of nitrogen lone-pair defining the adsorption of substrates, and consequently influencing on the reaction route. The proposed approach distinguished the present catalyst from Raney nickel examined in a previous paper. The noble and base metals may interact differently with the substrate, although both metals are classified as "soft".

• 公益社団法人 日本化学会の論文

著者

• Ikefuji Yoshio

  Technical Part, Iwatani Industrial Gases Corp.

• Mochida Isao

  Research Institute of Advanced Material Study, Kyushu University

• Tamura Ryuji

  Technical Part, Iwatani Industrial Gases Corp.

• Soeda Mahito

  R&D Laboratories, Nippon Steel Chemical Co.

• Okazaki Hiroshi

  R&D Laboratories, Nippon Steel Chemical Co.

• Soeda Mahito

  R&D Laboratories, Nippon Steel Chemical Co.

関連論文

• Catalytic activity of copper(II) salt of heteropolyphosphoric acid for the reduction of NO with its supporting active carbon.
• Carbonization of aromatic hydrocarbons. II. Carbonization of modified pyrene in the presence of aluminum chloride.
• Hydrogenation pathway of quinolines over Raney nickel and Ru/C.
• Kinetic study on hydrogenation of isoquinoline over supported ruthenium catalysts.

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