A5005481148- Pigment Synthesis and Properties
- X-ray Diffraction in Crystallography
- Nuclear materials and radiation effects
- Crystal Structures and Properties
- Catalysis and Oxidation Reactions
- Gas Sensing Nanomaterials and Sensors
- Advanced Condensed Matter Physics
- Catalytic Processes in Materials Science
- Advanced Photocatalysis Techniques
- Cultural Heritage Materials Analysis
- Thermal and Kinetic Analysis
- Bauxite Residue and Utilization
Institute of Chemistry of Silicates named after I.V. Grebenshchikov
2023-2024
Saint Petersburg State Electrotechnical University
2022-2023
Ioffe Institute
2022
Экспериментальное определение истинной равновесной растворимости гидроксидов и оксидов алюминия затруднено характерной склонностью их к образованию золей, а также из-за медленного установления гетерогенного химического равновесия низкой величины в водных средах [Школьников, 2008, 2009]. В статье на основе результатов тщательного кондуктометрического потенциометрического титрования 0,0010 М раствора Al(NO3)3(pH0 = 3,00) раствором 0,050 (0,100) NaOH при 20 °С определен cостав устойчивых...
A nanocrystalline powder of the waylandite-structured bismuth hydroaluminophosphate was obtained under hydrothermal conditions at 200 • C, 7 MPa and pH 7, characterized by X-ray diffractometry, scanning electron microscopy (SEM), energy dispersive microanalysis (EDAX).The simultaneous thermal analysis high-temperature diffractometry have shown that crystal-chemical formula this compound can be represented as BiAl 3 (PO 4 ) 2 O(OH) •(H O).This retains its structure crystallite size (∼65 nm)...
The waylandite-structured BiAl3(PO4)2(OH)6 compound was obtained under hydrothermal conditions at 200°С, ~7 MPa, and by varying pH of the initial water-salt suspension in 5-11 range. found to be formed via interaction crystalline BiPO4 an amorphous phase, predominantly consisting aluminum hydroxide. Thermodynamic calculations phase equilibria BiAl3(PO4)2(OH)6-BiPO4-Al(OH)3-H2O(HNO3, NaOH) system determined compositions coexisting phases depending on fluid, region stable existence 200°C.It...