منابع مشابه
Effective role of CaO/P2O5 ratio on SiO2-CaO-P2O5 glass system
In the present work, the effect of the CaO/P2O5 ratio on the composition of sol-gel synthesized 58SiO2-(19 - x)P2O5-(23 + x)CaO (x = 0, 5, 10 and 15 mol%) glass samples was studied. Further, the effect of NBO/BO ratio on hydroxy carbonated apatite layer (HCA) forming ability based on dissolution behavior in simulated body fluid (SBF) solution was also investigated. CaO/P2O5 ratios of synthesize...
متن کاملSiO2-CaO-P2O5 Bioactive Glasses: A Promising Curcuminoids Delivery System
In this paper, we report the study of the loading and the release of curcuminoids by bioactive glasses (BG) and mesoporous bioactive glasses (MBG). Through a detailed spectroscopic study, it was possible to determine the amount and the type of molecules released in water and in simulated body fluid (SBF). In particular, curcumin and K2T21 show a good ability to be released in di-keto and keto-e...
متن کاملخواص اپتیکی شیشه و شیشه سرامیک نانوساختار SiO2-Na2O-CaO-CaF2 آلاییده با Cr2O3
در این پ‍ژوهش اثر یون آلاینده Cr2O3بر خواص اپتیکی، حرارتی و ساختاری شیشه با ترکیب 53%SiO2-17Na2O-17CaO-13CaF2مورد مطالعه قرار گرفته است. هم‌چنین با انجام عملیات حرارتی دو مرحله‌ای در دمای جوانه‌زنی و رشد فاز بلورین نانومتر در شیشه بدون آلاینده و آلاییده شده باCr2O3متبلور گردید. حضور بلورهای نانومتری منجر به تغییر خواص اپتیکی شیشه، کاهش انرژی نوار ممنوعه و انرژی Urbachدر شیشه‌ها شده است. نوع فاز...
متن کاملHeavy Metal Removal Using Alkali Activated Kaolinite in the Cao-Al2O3-Sio2-H2O System
Most of calcium silicate hydrate or calcium aluminosilicate hydrate, CS(A)H, and related phases are relevant to Cement industry and have potential as geothermal well sealants as well as autoclaved construction materials. The CS(A)H system is highly complex and is comprised of crystalline to amorphous phases with variable composition that build up a wide family of phases, which are interesting f...
متن کاملPetedunnite (CaZnSi2O6): Stability and phase relations in the system CaO-ZnO-SiO2
The phase relations of petedunnite [CaZnSi2O6 (pd)] were determined experimentally at P-T conditions up to 2.5 GPa and 1100 °C. Single-phase petedunnite is formed at high pressures (P > 0.8 GPa). Reversed experiments show that at lower pressures and temperatures >650 °C petedunnite decomposes to willemite [Zn2SiO4 (wil)], hardystonite [Ca2ZnSi2O7 (har)], and quartz [SiO2 (qtz)] according to the...
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ژورنال
عنوان ژورنال: The Journal of the Society of Chemical Industry, Japan
سال: 1965
ISSN: 0023-2734,2185-0860
DOI: 10.1246/nikkashi1898.68.12_2317