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Hydrogenation of nitrobenzene to p-aminophenol using Pt/C catalyst and carbon-based solid acid
- Source :
- Chemical Engineering Journal. 229:105-110
- Publication Year :
- 2013
- Publisher :
- Elsevier BV, 2013.
-
Abstract
- Liquid phase hydrogenation of nitrobenzene to p-aminophenol (PAP) in water was studied over a catalyst system composed of Pt/C and carbon-based solid acid which was prepared by one-step hydrothermal carbonization of various carbon sources including starch, sucrose, glucose and furfural in sulfuric acid aqueous solution at 180 °C for 4 h. The effects of carbon-based solid acid type, Pt/C catalyst loading, hydrogen pressure and reaction temperature on nitrobenzene conversion and PAP selectivity were investigated. The results showed that PAP selectivity was favored at high acid density of the carbon-based solid acid. The carbon-based solid acid prepared from starch, with the highest SO3H amount, gave the highest PAP selectivity among the catalysts used. An increase in Pt/C catalyst loading led to an increased nitrobenzene conversion but a decreased PAP selectivity. A high reaction temperature was in favor of nitrobenzene conversion and PAP selectivity. Under the optimal reaction conditions, nitrobenzene conversion and PAP selectivity reached 61.0% and 77.8%, respectively.
- Subjects :
- General Chemical Engineering
Inorganic chemistry
chemistry.chemical_element
Sulfuric acid
General Chemistry
Furfural
Industrial and Manufacturing Engineering
Catalysis
Nitrobenzene
Bamberger rearrangement
Hydrothermal carbonization
chemistry.chemical_compound
chemistry
Environmental Chemistry
Selectivity
Carbon
Subjects
Details
- ISSN :
- 13858947
- Volume :
- 229
- Database :
- OpenAIRE
- Journal :
- Chemical Engineering Journal
- Accession number :
- edsair.doi...........70384b1262f9cef59aaebf38719e7772