Effect of Fe, Co and Ni promoters on MoS2 based catalysts for chemoselective hydrogenation of nitroarenes

Han, Wenpeng1,2; Wang, Shanmin3; Li, Xuekuan1; Ma, Ben1; Du, Mingxian1; Zhou, Ligong1; Yang, Ying1; Zhang, Ye1; Ge, Hui1

2020

10.1039/d0ra00320d

RSC Advances   影响因子和分区

20462069

2046-2069

The effect of Fe, Co and Ni promoters on supported MoS2 catalysts for hydrogenation of nitroarenes were systematically investigated via experiment, characterization and DFT calculation. It was found that the addition of promoters remarkably improved the reaction activity in a sequence of Ni > Co > Fe > Mo. Meanwhile Ni promoted catalyst with the best performance showed good recyclability and chemoselectivity for a wide substrate scope. The characterization results revealed that the addition of promoters decreased the interaction between Mo and support and facilitated the reductive sulfidation of Mo species to produce more coordinated unsaturated sites (CUS). DFT calculations showed that the addition of promoters increased the formation of CUS, and enhanced the adsorption of hydrogen. The influence degree of promoters followed the sequence Ni > Co > Fe > Mo, which was consistent with those of the activities. Nitrobenzene hydrogenation and hydrogen activation occurred at the S and Mo edge, respectively. The adsorbed hydrogen diffused from the Mo edge to the S edge to participate in the hydrogenation reaction. Mechanism investigation showed that the main reason for increased activity by the addition of promoters was the increase of amounts of CUS and the secondary reason was the augmentation of intrinsic activity of CUS. The present studies give a new understanding for promoter modified MoS2 catalysts applied for hydrogenation of nitroarenes.
© 2020 The Royal Society of Chemistry.

EI ; SCI

英语

其他

National Natural Science Foundation of China[21473231]

Chemistry

Chemistry, Multidisciplinary

WOS:000521329900007

Royal Society of Chemistry

20201008273218

Cobalt ; Density functional theory ; Gas adsorption ; Hydrogen ; Hydrogenation ; Iron ; Iron compounds ; Layered semiconductors ; Molybdenum ; Molybdenum compounds ; Nickel

Molybdenum and Alloys:543.3 ; Iron:545.1 ; Nickel:548.1 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Chemical Reactions:802.2 ; Chemical Operations:802.3 ; Chemical Products Generally:804 ; Probability Theory:922.1

EV Compendex

1.Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan; 030001, China
2.University of Chinese Academy of Sciences, Beijing; 100049, China
3.Department of Physics, Southern University of Science and Technology, Shenzhen Guangdong; 518055, China

Han, Wenpeng,Wang, Shanmin,Li, Xuekuan,et al. Effect of Fe, Co and Ni promoters on MoS2 based catalysts for chemoselective hydrogenation of nitroarenes[J]. RSC Advances,2020,10(14):8055-8065.

Han, Wenpeng.,Wang, Shanmin.,Li, Xuekuan.,Ma, Ben.,Du, Mingxian.,...&Ge, Hui.(2020).Effect of Fe, Co and Ni promoters on MoS2 based catalysts for chemoselective hydrogenation of nitroarenes.RSC Advances,10(14),8055-8065.

Han, Wenpeng,et al."Effect of Fe, Co and Ni promoters on MoS2 based catalysts for chemoselective hydrogenation of nitroarenes".RSC Advances 10.14(2020):8055-8065.