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  • Temperature-dependent Crystallization and Phase

     · Semicrystalline polymers can crystallize in the unique crystalline polymorph and show different phase behaviors under the high-pressure CO 2 treatment. Understanding such unique crystallization and phase transition behavior is of fundamental importance for the CO 2-assisited processing of semicrystalline polymers.Herein we investigated the polymorphic crystalline structure phase transition

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  • Anatase-TiO2 Nanomaterials Morphological/Size

     · Nanoparticulated TiO2 materials with anatase structure were synthesized by using a microemulsion method. Three different syntheses with varying surfactant-to-water molar ratio (ω) were used to obtain amorphous solid precipitates at room temperature. The structural characteristics of these solid precursors were studied by using X-ray absorption structure (X-ray absorption near-edge

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  • A salt or a co-crystalwhen crystallization protocol

     · The metastable molecular salt (III) is formed as a pure phase upon "dry" co-grinding without any water added specially (although in a humid atmosphere) upon fast anti-solvent crystallization or during slow anti-solvent crystallization experiments before any seeds of the co

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  • Review of Water-Assisted Crystallization for TiO2

     · Abstract TiO2 nanotubes (TNTs) have drawn tremendous attention owing to their unique architectural and physical properties. Anodizing of titanium foil has proven to be the most efficient method to fabricate well-aligned TNTs which however usually produces amorphous TNTs and needs further thermal annealing. Recently a water-assisted crystallization strategy has been proposed and

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  • Monitoring of Nanoparticle Growth in Crystallization and

    Crystallization. The initial stage of crystallization includes nucleation which relates to the transition from an (oversaturated) liquid phase to the solid phase. After nucleation particles start to growth and new particles will be formed in parallel by ongoing nucleation.

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  • Temperature-dependent Crystallization and Phase

     · Semicrystalline polymers can crystallize in the unique crystalline polymorph and show different phase behaviors under the high-pressure CO 2 treatment. Understanding such unique crystallization and phase transition behavior is of fundamental importance for the CO 2-assisited processing of semicrystalline polymers.Herein we investigated the polymorphic crystalline structure phase

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  • A green deep eutectic solvent modified magnetic titanium

    Magnetic titanium dioxide nanoparticles modified with green deep eutectic solvent (DES) composed of choline chloride (ChCl) and xylitol (Xyl) (Fe3O4 TiO2 ChCl Xyl ) were synthesized and applied

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  • Suppressing Co‐Crystallization of Halogenated Non

     · to a solid–solid phase transformation from polymorph I Cl to II Cl as indicated by distinct differences in the X-ray diffraction patterns recorded at 160 and 200 °C (Figure 2a). Hence ITIC-4Cl does not undergo re-crystallization above its g ≈ 210 °C T (cf. Figure S1b Supporting Information) as evidenced by the Figure 2.

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  • Crystallizationan overview ScienceDirect Topics

    H.J.M. Kramer G.M. van Rosmalen in Encyclopedia of Separation Science 2000 Introduction. Crystallization from solution is a separation technique where a solid phase is separated from a mother liquor. In contrast to other separation processes however the dispersed phase consisting of numerous solid particles also forms the final product that has to meet the required product specifications.

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  • Crystallized TiO2 Nanosurfaces in Biomedical Applications

     · growth (the appearance of a crystalline phase from either a supercooled liquid or a supersaturated solvent). The mechanism of the crystallization of amorphous TiO2 nanosurfaces as well as the kinetics and mechanisms of the solid state transformation from anatase to rutile can be found elsewhere 28–30 .

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  • Development of quantifying supersaturation to determine

     · Thus the induction times in the present results correspond to heterogeneous nucleation as well. Since supersaturation is a driving force for crystallization and a prerequisite for the formation of a solid phase from a solution the manner in which it is adjusted will determine the final particle properties

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  • Effect of seed particles on crystallization and

     · Commercial TiO 2 nanoparticles (Degussa P25) with a mean diameter of ca. 20 nm and of predominately anatase phase were deliberately added in sol–gel-prepared amorphous TiO 2 particles as "seed" before being subjected altogether to a mild solvothermal treatment over a temperature range from 100 to 200 °C. The presence of seed particles reduced the crystallization temperature moderately

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  • Crystallization Sulzer

    Crystallization is one of the most powerful purification techniques available in process engineering. Fractional Melt Crystallization is a stagewise separation technique that relies upon liquid-solid phase transition and enables multicomponent mixtures to be split into narrow fractions ultimately leading to top purities of selected components through the virtue of selectivity found in solid

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  • Review of Water-Assisted Crystallization for TiO2

     · Abstract TiO2 nanotubes (TNTs) have drawn tremendous attention owing to their unique architectural and physical properties. Anodizing of titanium foil has proven to be the most efficient method to fabricate well-aligned TNTs which however usually produces amorphous TNTs and needs further thermal annealing. Recently a water-assisted crystallization strategy has been proposed and

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  • (PDF) Deep eutectic solvent electrolysis for preparing N

     · A deep eutectic solvent electrolysis strategy for preparing N and P co-doped titanium dioxide is proposed and implemented. The solvent is constructed by the co-heating of choline phosphate and urea.

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  • Development of quantifying supersaturation to determine

     · Crystallization has been used in various industries to separate solid materials from solutions. The transition from the liquid phase to the solid phase occurs because the solubility decreases upon cooling evaporation and the addition of anti-solvents.

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  • Temperature-dependent Crystallization and Phase Transition

     · PLLA crystallized in the PLLA/CO 2 complex crystals under 7–13 MPa CO 2 at Tc ≤ 50 °C but the common a crystals under the high-pressure CO 2 at Tc ≥ 70 °C. Solid-state nuclear magnetic resonance analysis indicated that the PLLA/CO 2 complex crystals possessed weaker interactions between the PLLA chains than the common a crystals.

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  • Metal-induced solid-phase crystallization of amorphous

    Metal-induced solid-phase crystallization of amorphous TiO2 thin films was investigated by introducing metal contact layers such as Ni or Cu between the TiO2 film and substrate.

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  • Structural and morpholological properties of titanium

     · Titanium dioxide (TiO 2) is a perfect new emerging photocatalytic material due to its thermal and chemical stabilities superhydrophilicity low toxicity and natural geologic abundance .Also TiO 2 is a unique metal oxide semiconductor because of its flexible properties including wide band gap (3.2 eV) high refractive index and significant resistance to chemical and physical impacts 2 3 4 .

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  • Solvent Systems for Crystallization and Polymorph

    Crystallization from solvent is a particularly important process as this is the primary means of purification during the intermediate and final stages of drug synthesis. Moreover solution crystallization determines the final solid-state modification of the API namely polymorphs solvates and hydrates.

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  • (PDF) Deep eutectic solvent electrolysis for preparing N

     · A deep eutectic solvent electrolysis strategy for preparing N and P co-doped titanium dioxide is proposed and implemented. The solvent is constructed by the co

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  • SOLVENT INFLUENCE ON MANUFACTURABILITY PHASE

    solvent influence on manufacturability phase behavior and morphology of amorphous solid dispersions prepared via bead coating Eur J Pharm Biopharm . 2021 Jul 26S(21). doi 10.1016/j.ejpb.2021.07.013.

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  • Solvent influence on manufacturability phase behaviour

     · Solvent influence on manufacturability phase behaviour and morphology of amorphous solid dispersions prepared via bead coating Bead coating or fluid-bed coating serves as an auspicious solvent-based amorphous solid dispersion (ASD) manufacturing technique in respect of minimization of potential physical stability issues.

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  • Solvent Systems for Crystallization and Polymorph

    Crystallization from solvent is a particularly important process as this is the primary means of purification during the intermediate and final stages of drug synthesis. Moreover solution crystallization determines the final solid-state modification of the API namely polymorphs solvates and hydrates.

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  • Solvent Systems for Crystallization and Polymorph

    Crystallization from solvent is a particularly important process as this is the primary means of purification during the intermediate and final stages of drug synthesis. Moreover solution crystallization determines the final solid-state modification of the API namely polymorphs solvates and hydrates.

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  • Crystallization Orientation and Solid–Solid Crystal

     · The effect of confinement on the crystallization crystal orientation and polymorphic crystal transition of bulk and infiltrated polybutene-1 (PB-1) within anodic aluminum oxide (AAO) templates were studied. After cooling from the melt PB-1 within AAO templates crystallized into tetragonal Form II directly. The nucleation process inside the AAO pores was probably homogeneous when pore

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  • Crystallizationorgchemboulder

    Crystallization is a technique which chemists use to purify solid compounds. It is one of the fundamental procedures each chemist must master to become proficient in the laboratory. If a saturated hot solution is allowed to cool the solute is no longer soluble in the solvent and forms crystals of pure compound.

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  • Selecting the Desired Solid Form by Membrane

     · Polymorphism in the co-crystallization of the anticonvulsant drug carbamazepine and saccharin using supercritical CO2 as an anti-solvent. The Journal of Supercritical Fluids 2018 136 60-69. DOI 10.1016/j pflu.2018.02.004. Elena Simone Rahimah Othman Goran

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  • Titanium dioxide thin films for high temperature gas

     · Titanium dioxide (TiO2) thin film gas sensors were fabricated via the sol–gel method from a starting solution of titanium isopropoxide dissolved in methoxyethanol. Spin coating was used to deposit the sol on electroded aluminum oxide (Al2 O 3) substrates forming a film 1 μm thick.

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  • Temperature-dependent Crystallization and Phase Transition

     · Semicrystalline polymers can crystallize in the unique crystalline polymorph and show different phase behaviors under the high-pressure CO 2 treatment. Understanding such unique crystallization and phase transition behavior is of fundamental importance for the CO 2-assisited processing of semicrystalline polymers.Herein we investigated the polymorphic crystalline structure phase

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  • Development of quantifying supersaturation to determine

     · Thus the induction times in the present results correspond to heterogeneous nucleation as well. Since supersaturation is a driving force for crystallization and a prerequisite for the formation of a solid phase from a solution the manner in which it is adjusted will determine the final particle properties .

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  • Crystallization Systems

    Technobis Crystallization Systems is a world leading technology provider for solid-state research process development and formulation. Our devices provide real time answers to all your questions related to process aspects crystallization solubility im

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  • Recovery of iron by jarosite crystallization and

     · Co-extractants were widely used in the solvent extraction process which could improve the solubility of main extractant in organic phase and assist the separation of two phases (Guo et al. 2020). The sec-octyl alcohol can effectively improve the extraction performance of 7101 and increase the solubility of the extraction compound in the kerosene.

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  • Gas-phase Crystallization of Titanium Dioxide

    Decahedral-shaped anatase particles (DAPs) were prepared by a gas-phase process consisting of titanium(IV) chloride oxidation. The use of a coaxial-flow gas-phase reactor resulted in high reaction

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  • Structural and morpholological properties of titanium

     · Titanium dioxide nanoparticles were successfully synthesized by sol–gel under supercritical drying conditions of three organic solvents (acetone ethanol and methanol). The effects of supercritical solvent on structural and morphological properties of TiO 2 powders were investigated.

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  • Effects of solvent on properties of sol—gel-derived TiO2

     · 18 Thin Solid Films 219 (1992) I h 23 Effects of solvent on properties of sot-gel-derived Ti02 coating films Lill Hu Toshinobu Yokot Hiromitsu Kozuka and Sumio Sakka Institute for Chemical Research Kyoto University Uji Kyoto-Fu 611 (Japan) (Received November 26 1991 revised February 21. 1992 accepted May 5 1992) Abstract The effects of the kind of solvent on the properties of Ti02

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