Ru-catalyzed hydrogenation of aromatic diamines: The effect of alkali metal salts

Hoon Sik Kim; Sang Hyun Seo; Hyunjoo Lee; Sang Deuk Lee; Young Soo Kwon; Ik Mo Lee

doi:10.1016/S1381-1169(97)00246-X

Ru-catalyzed hydrogenation of aromatic diamines: The effect of alkali metal salts

Hoon Sik Kim
, Sang Hyun Seo
, Hyunjoo Lee
, Sang Deuk Lee
, Young Soo Kwon
, Ik Mo Lee

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

The influences of added alkali metal nitrates and nitrites on the performances of ruthenium catalysts in the liquid phase ring hydrogenation of 4,4'-methylenedianiline (MDA) and 1,4-phenylenediamine (PDA) have been examined. Sodium nitrate and sodium nitrite were shown to be the most effective promoters in enhancing the catalytic activity and in suppressing the formation of by-products. The effects of various solvents and the added water on the hydrogenation activity have also been investigated. The promoting effects of sodium nitrate and sodium nitrite were considerably enhanced in the presence of small amounts of water. XRD patterns of the Ru/Al₂O₃ catalyst sample obtained from the reaction performed in the presence of NaNO₃ or NaNO₂ revealed that the sodium aluminate (NaAlO₂) phase appears indicating that the cations of metal salts are interacting with the supporting material. An active species, NaOCH(CH₃)₂, was isolated and identified by spectroscopic and elemental analyses.

Original language	English
Pages (from-to)	267-276
Number of pages	10
Journal	Journal of Molecular Catalysis A: Chemical
Volume	132
Issue number	2-3
DOIs	https://doi.org/10.1016/S1381-1169(97)00246-X
Publication status	Published - 15 Jun 1998

Bibliographical note

Funding Information:
This work was supported by the Ministry of Science and Technology through the Chucheon Research Scientist Program.

Keywords

Alkali metal salt
Aromatic diamine
Hydrogenation

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10.1016/S1381-1169(97)00246-X

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title = "Ru-catalyzed hydrogenation of aromatic diamines: The effect of alkali metal salts",

abstract = "The influences of added alkali metal nitrates and nitrites on the performances of ruthenium catalysts in the liquid phase ring hydrogenation of 4,4'-methylenedianiline (MDA) and 1,4-phenylenediamine (PDA) have been examined. Sodium nitrate and sodium nitrite were shown to be the most effective promoters in enhancing the catalytic activity and in suppressing the formation of by-products. The effects of various solvents and the added water on the hydrogenation activity have also been investigated. The promoting effects of sodium nitrate and sodium nitrite were considerably enhanced in the presence of small amounts of water. XRD patterns of the Ru/Al2O3 catalyst sample obtained from the reaction performed in the presence of NaNO3 or NaNO2 revealed that the sodium aluminate (NaAlO2) phase appears indicating that the cations of metal salts are interacting with the supporting material. An active species, NaOCH(CH3)2, was isolated and identified by spectroscopic and elemental analyses.",

keywords = "Alkali metal salt, Aromatic diamine, Hydrogenation",

author = "Kim, \{Hoon Sik\} and Seo, \{Sang Hyun\} and Hyunjoo Lee and Lee, \{Sang Deuk\} and Kwon, \{Young Soo\} and Lee, \{Ik Mo\}",

note = "Funding Information: This work was supported by the Ministry of Science and Technology through the Chucheon Research Scientist Program.",

year = "1998",

month = jun,

day = "15",

doi = "10.1016/S1381-1169(97)00246-X",

language = "English",

volume = "132",

pages = "267--276",

journal = "Journal of Molecular Catalysis A: Chemical",

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TY - JOUR

T1 - Ru-catalyzed hydrogenation of aromatic diamines

T2 - The effect of alkali metal salts

AU - Kim, Hoon Sik

AU - Seo, Sang Hyun

AU - Lee, Hyunjoo

AU - Lee, Sang Deuk

AU - Kwon, Young Soo

AU - Lee, Ik Mo

N1 - Funding Information: This work was supported by the Ministry of Science and Technology through the Chucheon Research Scientist Program.

PY - 1998/6/15

Y1 - 1998/6/15

N2 - The influences of added alkali metal nitrates and nitrites on the performances of ruthenium catalysts in the liquid phase ring hydrogenation of 4,4'-methylenedianiline (MDA) and 1,4-phenylenediamine (PDA) have been examined. Sodium nitrate and sodium nitrite were shown to be the most effective promoters in enhancing the catalytic activity and in suppressing the formation of by-products. The effects of various solvents and the added water on the hydrogenation activity have also been investigated. The promoting effects of sodium nitrate and sodium nitrite were considerably enhanced in the presence of small amounts of water. XRD patterns of the Ru/Al2O3 catalyst sample obtained from the reaction performed in the presence of NaNO3 or NaNO2 revealed that the sodium aluminate (NaAlO2) phase appears indicating that the cations of metal salts are interacting with the supporting material. An active species, NaOCH(CH3)2, was isolated and identified by spectroscopic and elemental analyses.

AB - The influences of added alkali metal nitrates and nitrites on the performances of ruthenium catalysts in the liquid phase ring hydrogenation of 4,4'-methylenedianiline (MDA) and 1,4-phenylenediamine (PDA) have been examined. Sodium nitrate and sodium nitrite were shown to be the most effective promoters in enhancing the catalytic activity and in suppressing the formation of by-products. The effects of various solvents and the added water on the hydrogenation activity have also been investigated. The promoting effects of sodium nitrate and sodium nitrite were considerably enhanced in the presence of small amounts of water. XRD patterns of the Ru/Al2O3 catalyst sample obtained from the reaction performed in the presence of NaNO3 or NaNO2 revealed that the sodium aluminate (NaAlO2) phase appears indicating that the cations of metal salts are interacting with the supporting material. An active species, NaOCH(CH3)2, was isolated and identified by spectroscopic and elemental analyses.

KW - Alkali metal salt

KW - Aromatic diamine

KW - Hydrogenation

UR - https://www.scopus.com/pages/publications/0344835839

U2 - 10.1016/S1381-1169(97)00246-X

DO - 10.1016/S1381-1169(97)00246-X

M3 - Article

AN - SCOPUS:0344835839

SN - 1381-1169

VL - 132

SP - 267

EP - 276

JO - Journal of Molecular Catalysis A: Chemical

JF - Journal of Molecular Catalysis A: Chemical

IS - 2-3

ER -

Ru-catalyzed hydrogenation of aromatic diamines: The effect of alkali metal salts

Abstract

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Keywords

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