Analyzing of segregation in mixtures of 3-methylpyridine and heavy water by dynamic neutron radiography.
The closed-loop phase diagram of 3-methylpyridine-heavy water mixture was studied, to our best knowledge, for the first time with dynamic neutron radiography (DNR) at the 10MW VVR-SM Research Reactor in Budapest (Hungary). Visualized were the (i) lower temperature non-segregated states (below 38 degrees C), (ii) transition (40-43 degrees C), (iii) segregated states (46-128 degrees C), (iv) higher temperature transition (110-128 degrees C) and (v) higher temperature non-segregated states. The non-segregated state belonging to 141 degrees C, was found to be definitely dissimilar from the lower temperature state. Existence of a solid-like structure at the liquid-liquid interface was indicated.
Balaskó
M
M
KFKI Atomic Energy Research Institute, H-1525 Budapest, P.O.Box 49, Hungary. balasko@sunserv.kfki.hu
Jancsó
G
G
Korösi
F
F