Influences of M–Sn intermetallics (M = Ni, Cu) prepared by mechanical alloying on phenol hydroxylation. Issue 22 (25th April 2017)

• Record Type: Journal Article
• Authors: Pithakratanayothin, Sakollapath; Tongsri, Ruangdaj; Chaisuwan, Thanyalak; Wongkasemjit, Sujitra
• Is Part Of: Catalysis science & technology. Volume 7:Issue 22(2017)
• Page Start: 5413
• Page End: 5421
• Publication Date: 2017-04-25
• Subjects: Catalysis -- Periodicals; 541.395
• DOI: 10.1039/c7cy00655a
• Languages: English
• ISSNs: 2044-4753

Abstract

Abstract : This work discusses the effect of the crystal structure of Ni–Sn and Cu–Sn intermetallic catalysts 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 (Ni3 Sn4 and Cu6 Sn5 ) and hexagonal (Ni3 Sn and Cu6 Sn5 (HT)) crystal structures. The catalytic activity of all synthesized catalysts for phenol hydroxylation demonstrated that both Ni3 Sn4 and Ni3 Sn exhibited better catalytic activity than Cu6 Sn5 and Cu6 Sn5 (HT), and Ni3 Sn, having a hexagonal crystal structure, showed the best catalytic activity (>97% conversion) at 363 K, 3 h, 1 : 4 phenol : H2 O2, 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.