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Liquid Phase Hydrogenation of Nitrobenzene to Para-Aminophenol over Pt/ZrO₂ Catalyst and SO₄ ²⁻/ZrO₂-Al₂O₃ Solid Acid
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Liquid Phase Hydrogenation of Nitrobenzene to Para-Aminophenol over Pt/ZrO₂ Catalyst and SO₄ ²⁻/ZrO₂-Al₂O₃ Solid Acid
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Liquid Phase Hydrogenation of Nitrobenzene to Para-Aminophenol over Pt/ZrO₂ Catalyst and SO₄ ²⁻/ZrO₂-Al₂O₃ Solid Acid
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Journal Article
Liquid Phase Hydrogenation of Nitrobenzene to Para-Aminophenol over Pt/ZrO₂ Catalyst and SO₄ ²⁻/ZrO₂-Al₂O₃ Solid Acid
2010
Overview
ZrO₂-Al₂O₃ binary oxide was prepared by homogeneous coprecipitation method. SO₄ ²⁻/ZrO₂ and SO₄ ²⁻/ZrO₂-Al₂O₃ were prepared by impregnation method and were characterized by BET, XRD and TPD. Pt/ZrO₂ was prepared by incipient wetness impregnation of ZrO₂ with an aqueous solution of H₂PtCl₆. Subsequently, hydrogenation of nitrobenzene to para-aminophenol over Pt/ZrO₂ catalyst and SO₄ ²⁻/ZrO₂-Al₂O₃ solid acid using water as solvent was performed. The results indicate that para-aminophenol as well as a small quantity of aniline and ortho-aminophenol are obtained without using any environmentally undesirable liquid acid. The para-aminophenol selectivity reaches to 74.9% with 44.8% of nitrobenzene conversion under the optimal reaction conditions. And the amount of Al₂O₃ in SO₄ ²⁻/ZrO₂-Al₂O₃ has great influence on the selectivity to para-aminophenol. Graphical Abstract Hydrogenation of nitrobenzene to para-aminophenol over Pt/ZrO2 catalyst andSO₄ ²⁻/ZrO₂-Al₂O₃ solid acid was developed. The results indicate that para-aminophenol as well as a small quantity of aniline and ortho-aminophenol are obtained without using any environmentally undesirable liquid acid. The para-aminophenol selectivity reaches to 74.9 with 44.8% of nitrobenzene conversion under the optimal reaction conditions. And the amount of Al₂O₃ in SO₄ ²⁻/ZrO₂-Al₂O₃ has great influence on the selectivity to para-aminophenol. [graphic removed]
Publisher
Boston : Springer US,Springer Nature B.V
Subject
