Abstract
Hydrogenation of nitrobenzene has been carried out over Pt and Pt-Sn catalysts at 273 K using ethanol as solvent. In the first stage of the reaction the intermediate phenylhydroxylamine is formed, together with aniline. After almost all nitrobenzene is converted, phenylhydroxylamine is hydrogenated further to aniline. Selectivity to phenylhydroxylamine is scarcely influenced by the level of conversion and by the Pt/Sn ratio. Upon addition of tin, catalytic activity increases at low tin content, and then decreases at higher Sn/Pt ratios. It is suggested that at low concentration tin ions act as promoters by activating the oxygen-containing group. At higher tin content, platinum is poisoned and availability of activated hydrogen becomes rate-determining.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
