八面体纳米钼酸钡的原位生长及形成机理

利用RD496-2000型微量热计获取的微纳钼酸钡原位生长的热动力学信息解释了微纳钼酸钡制备反应的热动力学机理; 微纳钼酸钡制备反应均经历放热-吸热-放热的表观过程, 表观速率常数k和表观反应级数n变化趋势相同, 但数值和变化率存在差异; 通过对比分析出微乳液体系与水体系反应的量热差异与反胶束的碰撞、传递、融合、分离和重组等复杂过程密切相关.

In-situ Growth and Mechanism of the Octahedron BaMoO4 Nanostructures

RD496-2000 micro calorimeter was used to obtain thermodynamics and kinetics information of micro/nano BaMoO4 crystal in-situ growth and to explain thermodynamics and kinetics mechanism of preparation reaction about micro/nano BaMoO4. Apparent process of preparation reaction is exothermic, endexothermic and exothermic, respectively, the variational tendency of apparent rate constant k and apparent order of reaction n kept the same; however, both numerical value and velocity of variation were different. The results of calorimetry in microemulsion system and water system existed a gap, because there were collision, transfe-rence, fusion, separation and reconstitution of reverse micelle in micro emulsion, which could be analyzed by comparison.