Characteristics of precursor powders of a nickel-rich cathode material prepared by a spray drying process using water-soluble metal salts

RSC Advances ◽  
2014 ◽  
Vol 4 (83) ◽  
pp. 44203-44207 ◽  
Author(s):  
Gi Dae Park ◽  
Yun Chan Kang
Keyword(s):  
Cathode Material ◽  
Spray Drying ◽  
Water Soluble ◽  
Metal Salts ◽  
Drying Process ◽  
Precursor Powders

Synthesis of Nd2Fe14B powders by spray-drying and reduction–diffusion processes

2001 ◽  
Vol 16 (4) ◽  
pp. 1083-1089 ◽  
Author(s):  
X. L. Dong ◽  
B. K. Kim ◽  
C. J. Choi ◽  
K. S. Park ◽  
Z. D. Zhang
Keyword(s):  
Particle Size ◽  
Thermal Properties ◽  
Spray Drying ◽  
Process Parameters ◽  
Diffusion Processes ◽  
Liquid Solution ◽  
Metal Salts ◽  
Mechanochemical Method ◽  
Precursor Powders ◽  
Spray Dried

The magnetic Nd–Fe–B powders were prepared by a mechanochemical method, including the processes of spray drying, debinding, milling, H2 reduction, Ca reduction, and washing. The liquid solution dissolved with various metal salts was first spray-dried to prepare the precursor powders having uniformly dispersed Nd, Fe, and B components. The precursor powders in turn were subjected to the subsequent processes. The particle size of the resultant Nd–Fe–B powders was about 1 μm. Effects of the process parameters on phases, morphologies, microstructures, compositions, and thermal properties of the powders were investigated.

Synthesis of Cu-Coated Ni-Based Amorphous Composite Powders by Gas Atomization and Spray Drying Process

2007 ◽  
Vol 534-536 ◽  
pp. 133-136 ◽  
Author(s):  
Byoung Kee Kim ◽  
Yong Jin Kim ◽  
Jin Chun Kim
Keyword(s):  
Metallic Glass ◽  
Spray Drying ◽  
Water Soluble ◽  
Process Conditions ◽  
Gas Atomization ◽  
Initial Powder ◽  
Drying Process ◽  
Composite Powders ◽  
Atomization Process ◽  
Micron Size

Ni59Zr20Ti16Si2Sn3 bulk metallic glass (BMG) powders were produced by a gas atomization process, and ductile Cu powders were coated on the Ni-based BMG powders using a spray drying process in order to increase the ductility. Characteristics of the as-prepared powders with the atomization and spray drying process conditions were investigated. The atomization was conducted at 1450oC under the vacuum of 10-2 torr and the powders were mixed with water-soluble Cu nitrate. The mixture was sprayed at the temperature of 130oC to prepared initial powder. After reduction treatment, sub-micron size Cu powders were successfully coated on the surface of the atomized Ni BMG powders.

scholarly journals DRYING OF THE NEW WATER-SOLUBLE POLYMER COMPLEX OF ALBENDAZOL WITH PECTIN

2021 ◽  
pp. 319-325
Author(s):  
Askar Sheralievich Abdurazakov
Keyword(s):  
Biological Activity ◽  
Spray Drying ◽  
Lethal Dose ◽  
Water Soluble ◽  
Hazardous Substances ◽  
High Yield ◽  
Solution Flow Rate ◽  
Polymer Complex ◽  
Drying Process ◽  
Water Soluble Polymer

The drying process of the aqueous solution of the complex of Albendazole with pectin (Alpec) in a vacuum oven and by spray drying was studied. It was found that the drying in a nozzle-type spray dryer is preferable in yield and subsequent solubility of the final product. As a result of the studying of the parameters affecting to the drying process, the optimal mode of the dryer was established, which provides the high yield of the dry product: the temperature of the coolant at the inlet is 130–140 °С, the output is 60–70 °С, the solution flow rate is 2.5 l/h·min. The yield of the dry product is 85%. The comparative IR spectra of Alpec powder after spray drying, after drying in air, the starting Albendazole and pectin unambiguously indicate that the structure of the complex of Albendazole with pectin (Alpec) is identical after different types of drying. The biological activity of Alpec dry substance after spray drying compared with Albendazole was studied. The increased biological activity of Alpec compared with Albendazole was established, which can, probably, be explained by the good water solubility of Alpec in contrast to Albendazole and, as a consequence, the increase of bioavailability of the drug. It was found that the average lethal dose of Alpec (LD50) is 680 (601.8–768.4) mg·kg-1 (LD50 Albendazole - 400.2–450.4 mg·kg-1), i.e. the drug "Alpec" in terms of acute toxicity during intragastric use is classified as moderately hazardous substances. On the base of the results obtained, the technology of the obtaining of the anthelmintic drug alpec substance in the form of a water-soluble dry powder has been developed.

scholarly journals Calcium Chloride Modified Alginate Microparticles Formulated by the Spray Drying Process: A Strategy to Prolong the Release of Freely Soluble Drugs

Materials ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 1522 ◽  
Author(s):  
Marta Szekalska ◽  
Katarzyna Sosnowska ◽  
Anna Czajkowska-Kośnik ◽  
Katarzyna Winnicka
Keyword(s):  
Spray Drying ◽  
Drug Loading ◽  
Water Soluble ◽  
Cross Linking ◽  
Metformin Hydrochloride ◽  
Drying Process ◽  
Process Modification ◽  
Water Soluble Drug ◽  
Water Soluble Drugs ◽  
One Step

Alginate (ALG) cross-linking by CaCl2 is a promising strategy to obtain modified-release drug delivery systems with mucoadhesive properties. However, current technologies to produce CaCl2 cross-linked alginate microparticles possess major disadvantages, such as a poor encapsulation efficiency of water-soluble drugs and a difficulty in controlling the process. Hence, this study presents a novel method that streamlines microparticle production by spray drying; a rapid, continuous, reproducible, and scalable technique enabling obtainment of a product with low moisture content, high drug loading, and a high production yield. To model a freely water-soluble drug, metformin hydrochloride (MF) was selected. It was observed that MF was successfully encapsulated in alginate microparticles cross-linked by CaCl2 using a one-step drying process. Modification of ALG provided drug release prolongation—particles obtained from 2% ALG cross-linked by 0.1% CaCl2 with a prolonged MF rate of dissolution of up to 12 h. Cross-linking of the ALG microparticles structure by CaCl2 decreased the swelling ratio and improved the mucoadhesive properties which were evaluated using porcine stomach mucosa.

Optimization of spray drying process for Bi-2223 precursor powders fabrication

2016 ◽  
Vol 27 (8) ◽  
pp. 8862-8868 ◽  
Author(s):  
Lifeng Bai ◽  
Shengnan Zhang ◽  
Chengshan Li ◽  
Qingbin Hao ◽  
Guoqing Liu ◽  
...  
Keyword(s):  
Spray Drying ◽  
Drying Process ◽  
Precursor Powders

scholarly journals Spray Drying of Chitosan Acid Salts: Process Development, Scaling Up and Physicochemical Material Characterization

Marine Drugs ◽  
2021 ◽  
Vol 19 (6) ◽  
pp. 329
Author(s):  
Nilia de la Paz ◽  
Mirna Fernández ◽  
Orestes López ◽  
Caridad Garcia ◽  
Antonio Nogueira ◽  
...  
Keyword(s):  
Spray Drying ◽  
Air Temperature ◽  
Water Soluble ◽  
Industrial Scale ◽  
Process Conditions ◽  
Outlet Temperature ◽  
Drying Process ◽  
Polymer Backbone ◽  
Spray Dried ◽  
Acid Salts

We investigated a spray drying process for preparing water-soluble salts of high molecular weight chitosan (CH) intended for pharmaceutical excipient applications. CH was derived from chitin of marine lobster origin (Panulirus argus). The effects of organic acid (acetic or lactic acid) and the ratio (difference) of inlet/outlet air temperature (140/90 °C or 160/100 °C) on spray drying were studied. The yield of spray-dried CH salt powders ranged from 50% to 99% in laboratory and industrial-scale processes. The spray-dried dry powder of CH salts consisted of spherical agglomerated particles with an average diameter of 36.2 ± 7.0 µm (CH acetate) and 108.6 ± 11.5 µm (CH lactate). After dispersing the spray-dried CH salt powder samples in purified water, the mean particle sizes obtained for the CH acetate salts were 31.4 nm (batch A001), 33.0 nm (A002) and 44.2 nm (A003), and for the CH lactate salts 100.8 nm (batch L001), 103.2 nm (L002) and 121.8 nm (L003). The optimum process conditions for spray drying were found: an inlet air temperature of 160 ± 5 °C, an outlet temperature of 100 ± 5 °C and an atomizer disk rotational speed of 18,200 min−1. The X-ray powder diffraction (XRPD) and differential scanning calorimetry (DSC) results confirmed the amorphous state of the CH salts. The 1H nuclear magnetic resonance (NMR) and Fourier transform infrared (FT-IR) spectra of CH acetate and lactate salts verified that the spray drying process does not affect the polymer backbone. In conclusion, both laboratory and industrial-scale spray drying methods for preparing water-soluble acid salts of CH are reproducible, and the physicochemical properties of the corresponding CH acid salts are uniform.

Synthesis and Performance of Cathode Material Li3V2(PO4)3/C by Spray Drying and Carbothermal Method (SDATM)

2009 ◽  
Vol 24 (2) ◽  
pp. 349-352 ◽  
Author(s):  
Feng YU ◽  
Jing-Jie ZHANG ◽  
Yan-Feng YANG ◽  
Guang-Zhi SONG
Keyword(s):  
Cathode Material ◽  
Spray Drying ◽  
Carbothermal Method ◽  
And Performance

scholarly journals Optimization of inulin production process parameters using response surface methodology

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Wasim Akram ◽  
Navneet Garud
Keyword(s):  
Response Surface ◽  
Spray Drying ◽  
Product Yield ◽  
Drying Methods ◽  
Process Variables ◽  
Drying Process ◽  
Uniform Size ◽  
Drying Temperature ◽  
Yield Value ◽  
Internal Configuration

Abstract Background Chicory is one of the major source of inulin. In our study, Box–Behnken model/response surface analysis (RSM) was used for the optimization of spray drying process variables to get the maximum inulin yield from chicory (Cichorium intybus L.). For this investigation, the investigational plan utilized three process variables drying temperature (115–125 °C), creep speed (20–24 rpm), and pressure (0.02–0.04 MPa). Result The optimal variables established by applying the Box–Behnken model were as follows: drying temperature 119.20 °C, creep speed 21.64 rpm, and pressure 0.03 MPa. The obtained powdered inulin by spray drying was investigated for the yield value, identification, size, and surface morphology of the particle. The inulin obtained from the spray drying process consists of a fine molecule-sized white powder. Instead, the drying methods shows a significant effect on the morphology and internal configuration of the powdered inulin, as the inulin obtained from spray drying was of a widespread and uniform size and shape, with a rough surface on increase in temperature and smoother surface while increasing the creep speed. The findings indicate that the spray drying with optimum parameters resulted in maximum product yield. Conclusion The outcomes of the study concluded that the product yield through spray drying technique under optimized condition is optimal as compared to other drying technique. Hence, this technique may be applied at commercial scale for the production of inulin.

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