The article considers historical industrial, sacred and residential buildings and structures made of natural stone, located on the left bank of the Dniester within the Eastern Podillya. The paper fixates the technical condition, characterizes the features of the architectural appearance and design solutions of the masonry of the preserved objects.
This study is aimed to use fly ash and limestone as raw materials for preparing alkali methoxide heterogeneous catalysts for transesterification of palm oil into biodiesel. The heterogeneous catalyst was synthesized from fly ash and limestone through wet and dry methods and calcined within 1073–1273 K. X-ray diffraction and scanning electron microscopy analyses indicated the well-dispersed presence of the Ca(OCH3)2 crystal over the fly ash and limestone framework, which was mixed using wet method and calcined at 1073 K (W-800).
The memorial plastics of the two oldest cemeteries of Boryslav is investigated. Tthe damage and losses of ensembles of cemeteries in general and separate monuments were carried out. The identification of the stone material of tombstones is performed, the state of preservation of their physical substance is analyzed.
The application of thermodynamic analysis for studying the equilibrium of chemical reactions between components of architectural monuments made of stone and air components of large cities is considered. In order to evaluate the possibility of a chemical reaction, it is necessary to calculate the change in enthalpy, entropy, and Gibbs energy. The heat effect of the reaction (change of the en-thalpea) and the change of entropy have a secondary value for the course of such reactions. The proven values of ΔCр allow us to verify the correctness of the calculations ΔН0Т and ΔS0Т.