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The phase diagrams of the Li_2MoO_4-Na_2MoO_4 and Na_2MoO_4-K_2MoO_4 systems have been reassessed using differential thermal analysis together with high-temperature and room-temperature X-ray diffraction analysis. The results showed that the compound Li_2MoO_4·6Na_2MoO_4 did not exist; however,it confirmed the existence of the compound Li_2MoO_4·3Na_2MoO_4 in the Li_2MoO_4-Na_2MoO_4 systems. With regard to the system of Na_2MoO_4-K_2MoO_4,we could not confirm the results reported by Bukhanova who claimed that the system was eutectic type with 1∶1 and 1∶2 intermediate compounds,refuting the statement of Amadori who thought there was an apparent phase boundary at high temperature in α-solid solution region of the Na_2MoO_4-K_2MoO_4 binary system. The revised phase diagrams of these systems are illustrated in this article. These experimental results are in agreement with the computerized prediction using the support vector machine-atomic parameter method for the assessment of phase diagrams.
The phase diagrams of the Li_2MoO_4-Na_2MoO_4 and Na_2MoO_4-K_2MoO_4 systems have been reassessed using differential thermal analysis together with high-temperature and room-temperature X-ray diffraction analysis. The results showed that the compound Li_2MoO_4 · 6Na_2MoO_4 did not exist; however, it confirmed that the existence of the compound Li_2MoO_4 · 3Na_2MoO_4 in the Li_2MoO_4-Na_2MoO_4 systems. With regard to the system of Na_2MoO_4-K_2MoO_4, we could not confirm the results reported by Bukhanova who claimed that the system was eutectic type with 1: 1 and 1 : 2 intermediate compounds, refuting the statement of Amadori who thought there was an apparent phase boundary at high temperature in α-solid solution region of the Na_2MoO_4-K_2MoO_4 binary system. The revised phase diagrams of these systems are illustrated in this article. These experimental results are in agreement with the computerized prediction using the support vector machine-atomic parameter method for the assessment of phase diagrams.