Effect of Re promoter on the structure and catalytic performance of Ni-Re/Al₂O₃ catalysts for the reductive amination of monoethanolamine.

ABSTRACT: In this paper, Ni/Al₂O₃ catalysts (15 wt% Ni) with different Re loadings were prepared to investigate the effect of Re on the structure and catalytic performance of Ni-Re/Al₂O₃ catalysts for the reductive amination of monoethanolamine. Reaction results reveal that the conversion and ethylenediamine selectivity increase significantly with increasing Re loading up to 2 wt%. Ni-Re/Al₂O₃ catalysts show excellent stability during the reductive amination reaction. The characterization of XRD, DR UV-Vis spectroscopy, H₂-TPR, and acidity-basicity measurements indicates that addition of Re improves the Ni dispersion, proportion of octahedral Ni²⁺ species, reducibility, and acid strength for Ni-Re/Al₂O

SUBMITTER: Ma L 

PROVIDER: S-EPMC9078520 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature