Kondeboina, Murali published the artcileBimetallic Ni-Co/γ-Al2O3 catalyst for vapour phase production of γ-valerolactone: Deactivation studies and feedstock selection, HPLC of Formula: 539-88-8, the main research area is nickel cobalt alumina catalytic vapor phase reaction valerolactone.
With an aim to establish supported nonnoble Co metal catalysts for production of a promising fuel and fuel additive γ-valerolactone (GVL) at ambient pressure in continuous mode, Co/γ-Al2O3 and bimetallic Ni-Co/γ-Al2O3 catalysts were prepared and their catalytic activities vs. catalytic features were correlated. Ni-Co/γ-Al2O3 catalyst exhibited GVL productivity of 1.125 kgGVL.kg-1catalysth-1 which is relatively higher than Co/γ-Al2O3 catalyst. Ni-Co/γ-Al2O3 catalyst is stable during 12 h time-onstream studies while Co/γ-Al2O3 catalyst suffers from deactivation. The addition of Ni to Co/γ-Al2O3 augments the resultant bimetallic catalyst activity and coke resistance capacity. As evidenced from XRD, H2-TPR, XPS analyses the addition of Ni to Co/γ-Al2O3 gave Ni-Co alloy in the bimetallic catalysts. H2-pulse chemisorption studies and TEM analyses illustrate formation of smaller particles in bimetallic Ni-Co/γ-Al2O3 catalyst which in turn influenced the rate of formation of GVL. From TGA of spent catalysts, the C deposition rate is decreased in the case of Ni-Co/γ-Al2O3 catalyst (0.43 mmol.g-1cat.h-1) than Co/γ-Al2O3 catalyst (1.014 mmol.g-1cat.h-1). Among the feedstocks of GVL i.e. levulinic acid, Me levulinate, Et levulinate, Et levulinate is prominent in constantly yielding GVL during 24 h study over bimetallic Ni-Co/γ-Al2O3 catalyst.
Fuel published new progress about Biomass. 539-88-8 belongs to class esters-buliding-blocks, name is Ethyl 4-oxopentanoate, and the molecular formula is C7H12O3, HPLC of Formula: 539-88-8.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics