TY - JOUR
T1 - Molybdenum nitride@porous carbon, derived from phosphomolybdic acid loaded metal-azolate framework-6
T2 - A highly effective catalyst for oxidative desulfurization
AU - Mondol, Md Mahmudul Hassan
AU - Bhadra, Biswa Nath
AU - Jhung, Sung Hwa
N1 - Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/7/5
Y1 - 2021/7/5
N2 - A new composite of the metal-azolate framework (MAF-6) and phosphomolybdic acid (PMA), named PMA(x)@MAF-6, was prepared. Well-dispersed (size: ∼4 nm) Mo2N, on porous carbon, was prepared without external nitrogen sources firstly via carbonization of the PMA(x)@MAF-6. The prepared catalyst was applied in oxidative desulfurization (ODS) with H2O2 as a greenoxidant and showed remarkable performance. A selected catalyst Mo2N@C-3 had the highest turnover frequency (30 h-1, around 2–3 times of the best catalyst so far) with the lowest activation energy (27.8 kJ·mol−1) in ODS (with H2O2) among any molybdenum-based catalysts. The ODS over Mo2N@C was explained by a non-radical mechanism via active Mo-peroxo species. Moreover, the high activity of the catalyst is partly because of the contribution of nitrogen in Mo2N. The studied catalyst could be easily recycled by solvent washing. Therefore, Mo2N, especially supported on carbon (like Mo2N@C), could be firstly suggested as a promising catalyst in ODS.
AB - A new composite of the metal-azolate framework (MAF-6) and phosphomolybdic acid (PMA), named PMA(x)@MAF-6, was prepared. Well-dispersed (size: ∼4 nm) Mo2N, on porous carbon, was prepared without external nitrogen sources firstly via carbonization of the PMA(x)@MAF-6. The prepared catalyst was applied in oxidative desulfurization (ODS) with H2O2 as a greenoxidant and showed remarkable performance. A selected catalyst Mo2N@C-3 had the highest turnover frequency (30 h-1, around 2–3 times of the best catalyst so far) with the lowest activation energy (27.8 kJ·mol−1) in ODS (with H2O2) among any molybdenum-based catalysts. The ODS over Mo2N@C was explained by a non-radical mechanism via active Mo-peroxo species. Moreover, the high activity of the catalyst is partly because of the contribution of nitrogen in Mo2N. The studied catalyst could be easily recycled by solvent washing. Therefore, Mo2N, especially supported on carbon (like Mo2N@C), could be firstly suggested as a promising catalyst in ODS.
KW - Catalysis
KW - Desulfurization
KW - Metal-Organic frameworks
KW - Molybdenum nitride
KW - Oxidation
UR - http://www.scopus.com/inward/record.url?scp=85101565886&partnerID=8YFLogxK
U2 - 10.1016/j.apcatb.2021.119988
DO - 10.1016/j.apcatb.2021.119988
M3 - Article
AN - SCOPUS:85101565886
SN - 0926-3373
VL - 288
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
M1 - 119988
ER -