Issue 22, 2017

Influences of M–Sn intermetallics (M = Ni, Cu) prepared by mechanical alloying on phenol hydroxylation

Abstract

This work discusses the effect of the crystal structure of Ni–Sn and Cu–Sn intermetallic catalysts on phenol hydroxylation. All catalysts were prepared via the mechanical alloying (MA) technique which is a green process for catalyst preparation. The results showed that the prepared catalysts consisted of monoclinic (Ni3Sn4 and Cu6Sn5) and hexagonal (Ni3Sn and Cu6Sn5(HT)) crystal structures. The catalytic activity of all synthesized catalysts for phenol hydroxylation demonstrated that both Ni3Sn4 and Ni3Sn exhibited better catalytic activity than Cu6Sn5 and Cu6Sn5(HT), and Ni3Sn, having a hexagonal crystal structure, showed the best catalytic activity (>97% conversion) at 363 K, 3 h, 1 : 4 phenol : H2O2, and 50 mg of catalyst content, giving CAT (60.28% yield) and HQ (36.82% yield) with no over-oxidation of CAT and HQ as time elapsed.

Graphical abstract: Influences of M–Sn intermetallics (M = Ni, Cu) prepared by mechanical alloying on phenol hydroxylation

Article information

Article type
Paper
Submitted
04 abr. 2017
Accepted
11 abr. 2017
First published
12 abr. 2017

Catal. Sci. Technol., 2017,7, 5413-5421

Influences of M–Sn intermetallics (M = Ni, Cu) prepared by mechanical alloying on phenol hydroxylation

S. Pithakratanayothin, R. Tongsri, T. Chaisuwan and S. Wongkasemjit, Catal. Sci. Technol., 2017, 7, 5413 DOI: 10.1039/C7CY00655A

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