Thermochemistry of the Dissolution of Copper Tetra-3-carboxyphtalocyanine in Aqueous Solutions of KOH at 298.15 K

被引:0
|
作者
Krutov, P. D. [1 ]
Maizlish, V. E. [1 ]
Krutova, O. N. [1 ]
Chernikov, V. V. [1 ]
Bazanov, M. I. [1 ]
Kiptikova, E. E. [1 ]
机构
[1] Ivanovo State Univ Chem & Technol, Ivanovo 153000, Russia
关键词
thermodynamics; solutions; calorimeter; enthalpy of formation; dissociation constant; phthalocyanins; PHTHALOCYANINES;
D O I
10.1134/S0036024424701371
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A complex of tetra-3-carboxyphthalocyanine with copper that is insoluble in water is obtained. Thermal effects from dissolving crystalline tetra-3-carboxymetalphthalocyanine in aqueous solutions of various KOH concentrations (from 0.002 to 0.02 mol/L) at 298.15 K are determined via direct calorimetry. Measurements are made in a calorimeter using an isothermal shell with automatic recording of the temperature and electrical calibration at T = (293.15-308.15) +/- 0.01 K and P = 100.5 +/- 0.7 kPa. Standard enthalpies of formation of the products of dissociation of the tetra-3-carboxyphthalocyanine complex with copper in aqueous solution are calculated. Thermal effects of stepwise dissociation are calculated using the HEAT computer program.
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页码:2233 / 2236
页数:4
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