| Autor: |
Mitta, Harisekhar, Seelam, Prem Kumar, Chary, K. V. Raghava, Mutyala, Suresh, Boddula, Rajender, Inamuddin, Asiri, Abdullah M. |
| Zdroj: |
Global Challenges; Dec2018, Vol. 2 Issue 12, pN.PAG-N.PAG, 1p |
| Abstrakt: |
In this work, Cu nanoparticles (Cu NPs, 2‐20 nm) supported on Hydrotalcite catalysts exhibit enhanced selectivity for γ‐valerolactone (GVL) during hydrogenolysis of levulinic acid (LA). At 260 °C, over 3 wt% Cu achieved 87.5% of LA conversion with a maximum GVL selectivity (95%). In contrast, LA hydrogenolysis over 3Cu/Hydrotalcite catalyst is highly active and stable toward the production of GVL due to balanced acido‐basicity and higher Cu dispersion with ultrasmall particle sizes, which are investigated through the temperature programmed desorption (TPD) of ammonia, N2O titration, and transmission electron microscopy (TEM) analysis. Hydrotalcite in combination with inexpensive Cu catalyst is found to be an efficient and environmentally benign for LA hydrogenolysis. A novel approach and potential design of highly active, controlled Cu nanoparticles (NPs) deposited over Hydrotalcite is discussed. The transformation of levulinic acid into γ‐valerolactone is significantly affected with Cu loading. Over 3 wt% Cu catalyst exhibits good catalytic activity, with a maximum amount of active copper sites and unique acidic properties. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
Plný text