Add time:07/27/2019         Source:sciencedirect.com

TG, DTG and DTA have been used in non-isothermal investigations of binary systems of Ni2O3 and La2O3 with barium perchlorate trihydrate, BP·3 H2O, in various molar ratios, carried out under an air (static) atmosphere from ambient to 1000°C. Ni2O3 catalysed the dehydration process of BP·3 H2O and lowered its Tf by 20°C. The discontinuity on the TG curve due to an incomplete perchlorate—chlorate reaction vanished in the presence of either of the oxides: a mechanism is proposed. La2O3 lowered Tf by 50°C; Ti for the decomposition of BP was lowered by 150 and 100°C in the presence of La2O3 and Ni2O3, respectively. X-Ray diffractometry did not reveal any reaction between BP and the two oxides. Kinetic parameters for the decomposition steps in the presence of either of the oxides have been determined.

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