Selective hydrogenation of diphenylacetylene using NiCo nanoparticles supported on mesoporous carbon as catalyst

Alyaa S Shiddiqah; Iman Abdullah; Yuni K Krisnandi

doi:10.55730/1300-0527.3359

Selective hydrogenation of diphenylacetylene using NiCo nanoparticles supported on mesoporous carbon as catalyst

Turk J Chem. 2021 Nov 30;46(3):677-686. doi: 10.55730/1300-0527.3359. eCollection 2022.

Authors

Alyaa S Shiddiqah¹, Iman Abdullah¹, Yuni K Krisnandi^{1

2}

Affiliations

¹ Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Indonesia, Depok, Indonesia.
² Solid Inorganic Framework Laboratory, Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Indonesia, Depok, Indonesia.

Abstract

Hydrogenation of alkynes to alkenes is an important procedure in the synthesis of organic compounds. In this study, selective hydrogenation was carried out on diphenylacetylene as a model of alkyne compounds using NaBH₄ as a hydrogen source and NiCo bimetallic nanoparticles supported on mesoporous carbon (NiCo/MC) as a catalyst. The mesoporous carbon was prepared using the soft-templated method from phloroglucinol and formaldehyde as precursors while the NiCo/MC catalyst was synthesized using a wet impregnation method. Based on surface area analysis, it was found that the pore diameters of MC, Ni/MC, and NiCo/MC were 12.8 nm, 13.4 nm, and 12.7 nm respectively, which indicated the mesoporous size of the materials. TEM analysis also confirmed the formation of nanoparticles on mesoporous carbon with the average size similar to the pore structure of the support, thus indicating the incorporation of the metals on the support. The hydrogenation reaction of diphenylacetylene was carried out with variations in reaction time and temperature. GCMS analysis of the products showed that the optimum conditions were obtained over NiCo/MC catalyst at 50 °C for 4 h with a diphenylacetylene conversion of 71.5% and a selectivity of 87.1% for the formation of cis-stilbene.

Keywords: NiCo catalyst; diphenylacetylene; mesoporous carbon; selective hydrogenation.

Grants and funding

This work was funded by the University of Indonesia (Universitas Indonesia) through PUTI Research Grant with contract number NKB-4550/UN2.RST/HKP.05.00/2020.