619-81-8Relevant articles and documents
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Komppa,Rohrmann
, p. 5 (1935)
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Catalyst for aqueous phase catalytic hydrogenation of phthalic acids and ester derivatives thereof and preparation method and application thereof
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Paragraph 0046-0051; 0055-0056, (2020/07/13)
The invention discloses a catalyst for aqueous phase catalytic hydrogenation of phthalic acids and ester derivatives thereof, a preparation method and application thereof. The catalyst adopts an acidic composite carrier of aluminum-doped ordered mesoporous silica, and combines specific Si/Al, ordered mesoporous size and active component loading capacity to realize catalytic hydrogenation of phthalic acids and ester derivatives thereof in the water phase to prepare corresponding cyclohexanedicarboxylic acids and derivatives thereof. The catalyst is low in raw material cost, simple in preparation process and lower in noble metal loading capacity, wherein the catalytic reaction temperature is 40-100 DEG C, the hydrogen pressure is 3-6MPa, the reaction time is 0.2-3h, the conditions are mild,the solvent is pollution-free and the catalytic efficiency is high.
Catalytic hydrogenation products of aromatic and aliphatic dicarboxylic acids
Shinde, Sunil B.,Deshpande, Raj M.
, p. 1137 - 1142 (2019/04/05)
Hydrogenation of aromatic dicarboxylic acids gave 100 % selectivity to respective cyclohexane dicarboxylic acid with 5 % Pd/C catalyst. 5 % Ru/C catalyst was observed to give over hydrogenation products at 493 K and at lower temperature (453 K) the selectivity for cyclohexane dicarboxylic acids was increased. Hydrogenation of phthalic acid with Ru-Sn/Al2O3 catalyst was observed to give phthalide instead of 1,2-benzene dimethanol or 2-hydroxy methyl benzoic acid. Ru-Sn/Al2O3 catalyst selectively hydrogenated the carboxylic group of cyclohexane dicarboxylic acids to give cyclohexane dimethanol. Use of proper catalysts and reaction conditions resulted in desired products.
