Toward High Selectivity Aniline Synthesis Catalysis at Elevated Temperatures.

ABSTRACT: In connection with an initiative to enhance heat recovery from the large-scale operation of a heterogeneously catalyzed nitrobenzene hydrogenation process to produce aniline, it is necessary to operate the process at elevated temperatures (>100 °C), a condition that can compromise aniline selectivity. Alumina-supported palladium catalysts are selected as candidate materials that can provide sustained aniline yields at elevated temperatures. Two Pd/Al₂O₃ catalysts are examined that possess comparable mean Pd particle sizes (∼5 nm) for different Pd loading: 5 wt % Pd/Al₂O₃ and 0.3 wt % Pd/Al₂O₃. The higher Pd loading sample represents a reference catalyst for which the Pd crystallite morphology has previously been established.

SUBMITTER: Morisse CGA 

PROVIDER: S-EPMC8802303 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature