TY - JOUR

T1 - Heat capacity and standard thermodynamic properties of perovskite-type oxide Н2Nd2Ti3O10 and organic-inorganic hybrid Н2Nd2Ti3O10 BuOH over the range of (5–340)

AU - Новаковский, Вадим Алексеевич

AU - Зверева, Ирина Алексеевна

AU - Санкович, Анна Михайловна

AU - Курносенко, Сергей Алексеевич

AU - Маркин, Алексей

AU - Смирнова, Наталья

PY - 2025/8/1

Y1 - 2025/8/1

N2 - This report focuses on heat capacity and thermodynamic properties of crystalline perovskite-like layered oxides: protonated titanate H2Nd2Ti3O10 and its n-butoxy derivative, designated as H2Nd2Ti3O10 × BuOH, in the temperature range from 5 to 340 K. Isobaric heat capacity of the compounds was measured using precise adiabatic vacuum calorimetry. Standardthermodynamic properties of the oxides were estimated based on the temperature dependencies of the experimental heat capacity. The data obtained allowed us to verify the applicability of the additivity principle for predicting the thermodynamic properties of layered organic–inorganic hybrids. As a result of the experiments, it was established that the principle of additivity is not realized in the case of covalent bonding between the inorganic matrix and organic molecules, which indicates the impossibility of calculating the heat capacity of the hybrid material as the sum of the values for the oxide and organic components, confirming the presence of a covalent bond between them.

AB - This report focuses on heat capacity and thermodynamic properties of crystalline perovskite-like layered oxides: protonated titanate H2Nd2Ti3O10 and its n-butoxy derivative, designated as H2Nd2Ti3O10 × BuOH, in the temperature range from 5 to 340 K. Isobaric heat capacity of the compounds was measured using precise adiabatic vacuum calorimetry. Standardthermodynamic properties of the oxides were estimated based on the temperature dependencies of the experimental heat capacity. The data obtained allowed us to verify the applicability of the additivity principle for predicting the thermodynamic properties of layered organic–inorganic hybrids. As a result of the experiments, it was established that the principle of additivity is not realized in the case of covalent bonding between the inorganic matrix and organic molecules, which indicates the impossibility of calculating the heat capacity of the hybrid material as the sum of the values for the oxide and organic components, confirming the presence of a covalent bond between them.

KW - теплоемкость

KW - термический анализ

KW - сложные оксиды

KW - перовскиты

KW - Heat capacity

KW - Thermodynamic properties

KW - Organic–inorganic hybrid

KW - Layered perovskite-like oxides

KW - Adiabatic calorimetry

UR - https://www.mendeley.com/catalogue/53678bcc-d70a-3cad-b65b-c0c3e824f406/

U2 - 10.1007/s10973-025-14501-4

DO - 10.1007/s10973-025-14501-4

M3 - Article

VL - 150

SP - 12467

EP - 12478

JO - Journal of Thermal Analysis and Calorimetry

JF - Journal of Thermal Analysis and Calorimetry

SN - 1388-6150

IS - 16

ER -