Reference

Several considerations on the radiocolloidal and pseudoradiocolloidal states of the fissionable element solutions

Several considerations on the radiocolloidal and pseudoradiocolloidal states of the fissionable element solutions. Danis, A.; Oncescu, M.; Purica, I.; Badea, E. G. (Inst. Phys. Nucl. Eng., Bucharest, Rom.). Rev. Roum. Phys., 22(19), 1107-9 (English) 1977. CODEN: RRPQAN. ISSN: 0035-4090. DOCUMENT TYPE: Journal CA Section: 71 (Nuclear Technology) Section cross-reference(s): 66 The radiocolloidal and pseudo-radiocolloidal states of uranyl acetate [541-09-3] solns. of different U concns. (0.146-372 ppm) and of the liq. residue from the sepn. of U, as well as the behavior of these states as a function of time, were studied directly by the fission-fragment track method. The appearance of the radiocolloidal and pseudo-radiocolloidal states depends strongly on the quantity of impurities in the soln.; the sizes of the radiocolloids and pseudo-radiocolloids increase with time and the retention of radiocolloids on various materials is very different.

Thermochemical studies of diaquadiacetatodioxouranium(VI)

Thermochemical studies of diaquadiacetatodioxouranium(VI). Thakur, Lambodar; Ahmad, M. Faiz; Prasad, Rajendra (Dep. Chem., Bhagalpur Univ., Bhagalpur, India). Indian J. Chem., Sect. A, 15A(9), 821-2 (English) 1977. CODEN: IJCADU. DOCUMENT TYPE: Journal CA Section: 69 (Thermodynamics, Thermochemistry, and Thermal Properties) The heats of soln. of anhyd. diacetatodioxouranium(VI) [34788-61-9] and diaquodiacetatodioxouranium(VI) [541-09-3] in water and 2N acetic acid at 300 K, are -11.3 ± 0.6, -22.4 ± 0.5; and 22.6 ± 0.4, 10.7 ± 0.2 kJ mol-1, resp. The std. heat of formation of anhyd. UO2(OAc)2 is -1991.9 kJ mol-1. The gas-phase enthalpy of reaction between UO2(OAc)2 and one mole of water (-60.6 kJ mol-1) commensurate with the dative U-O bond strength.