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Valorization of walnut shell ash as a catalyst for biodiesel production
The catalytic activity of the walnut shell ash was investigated in the biodiesel production by the sunflower oil methanolysis. The catalyst was characterized by the TG-DTA, XRD, Hg porosimetry, N2 physisorption, SEM, and ...
Thermodynamic and kinetics investigation of elemental evaporation from molten Al7Si4Cu alloy
(Elsevier BV, 2021)
Treatment of liquid aluminum alloys in low vacuum conditions is often applied for parts production in the automotive and aerospace industry because of its effectiveness in removing dissolved gases. Because of the low vapour ...