Manganese Oxide Octahedral Molecular Sieves (OMS-2) Multiple Framework Substitutions: A New Route to OMS-2 Particle Size and Morphology Control

2010 ◽  
Vol 21 (2) ◽  
pp. 312-323 ◽  
Author(s):  
Cecil K. King’ondu ◽  
Naftali Opembe ◽  
Chun-hu Chen ◽  
Katana Ngala ◽  
Hui Huang ◽  
...  
Keyword(s):  
Particle Size ◽  
Manganese Oxide ◽  
Molecular Sieves ◽  
Morphology Control ◽  
Octahedral Molecular Sieves ◽  
Particle Size And Morphology ◽  
Size And Morphology ◽  
Size And Morphology Control

Preparation of Flaky Alumina Powder by Molten Salt Synthesis Method

2014 ◽  
Vol 997 ◽  
pp. 428-432
Author(s):  
Qian Ying Zhang ◽  
Xun Geng
Keyword(s):  
Particle Size ◽  
Molten Salt ◽  
Synthesis Method ◽  
Morphology Control ◽  
Molten Salt Synthesis ◽  
Alumina Powder ◽  
High Quality ◽  
Uniform Size ◽  
Particle Size And Morphology ◽  
Size And Morphology

High-quality flaky α-Al2O3 powder with regular morphology, uniform size, larger diameter-thickness proportion and excellent dispersibility in water and free from agglomeration and staggered growth was obtained on the basis of molten salt synthesis method. The effects of experiment parameter on the particle size and morphology of flaky alumina powder were studied. The mechanism of morphology control was discussed.

Direct manipulation of particle size and morphology of ordered mesoporous silica by flow synthesis

RSC Advances ◽  
2015 ◽  
Vol 5 (18) ◽  
pp. 13331-13340 ◽  
Author(s):  
T. N. Ng ◽  
X. Q. Chen ◽  
K. L. Yeung
Keyword(s):  
Particle Size ◽  
Mesoporous Silica ◽  
Hollow Spheres ◽  
Ordered Mesoporous Silica ◽  
Direct Manipulation ◽  
Flow Synthesis ◽  
Precise Control ◽  
Ordered Mesoporous ◽  
Particle Size And Morphology ◽  
Size And Morphology

Flow-synthesis of mesoporous silica allows deliberate and precise control over the size and shapes and enables the preparation of complex microstructures (i.e., hollow spheres).

Role of cyclic voltammetry in characterizing solids: natural and synthetic manganese oxide octahedral molecular sieves

1993 ◽  
Vol 5 (10) ◽  
pp. 1395-1400 ◽  
Author(s):  
Roberto N. De Guzman ◽  
Yan Fei Shen ◽  
Brenda R. Shaw ◽  
Steven L. Suib ◽  
Chi Lin O'Young
Keyword(s):  
Cyclic Voltammetry ◽  
Manganese Oxide ◽  
Molecular Sieves ◽  
Octahedral Molecular Sieves ◽  
Natural And Synthetic

scholarly journals Dehumidified Air-Assisted Spray-Drying of Cloudy Beetroot Juice at Low Temperature

2021 ◽  
Vol 11 (14) ◽  
pp. 6578
Author(s):  
Aleksandra Jedlińska ◽  
Alicja Barańska ◽  
Dorota Witrowa-Rajchert ◽  
Ewa Ostrowska-Ligęza ◽  
Katarzyna Samborska
Keyword(s):  
Particle Size ◽  
Physicochemical Properties ◽  
Spray Drying ◽  
Low Temperatures ◽  
Beetroot Juice ◽  
Particle Size And Morphology ◽  
Size And Morphology ◽  
Tapped Density ◽  
Lower Loss ◽  
Better Than

This paper discusses the physicochemical properties of powders obtained by spray drying of cloudy beetroot juice, using dehumidified air in variants with or without carriers. The inlet air temperature was 130 °C or 90 °C, and the addition of the carriers was at a ratio of juice to carrier solids of 3:2. In the obtained powders, the following physicochemical properties were determined: water content and water activity, apparent density, loose and tapped density, porosity, flowability, particle size and morphology, and the content and retention of betalains. It was possible to dry cloudy beetroot juice without the use of carriers at low temperatures (90 or 130 °C). The 100% beetroot powders were characterized by satisfactory physicochemical properties, often better than those with carriers (including lower hygroscopicity and higher color saturation and yield). A lower loss of betalains was found for the powders with the addition of carriers. The best process yields were obtained for the powder without carriers at 130 °C and 90 °C.

Synthesis and Properties of (Bi0.5Na0.5)TiO3 Powders by Hydrothermal Method

2007 ◽  
Vol 336-338 ◽  
pp. 140-142
Author(s):  
Jun Jie Hao ◽  
Xiao Hui Wang ◽  
Shi Yun Lin ◽  
Long Tu Li
Keyword(s):  
Particle Size ◽  
Hydrothermal Method ◽  
Single Phase ◽  
Piezoelectric Ceramics ◽  
Treatment Temperature ◽  
Lead Free ◽  
Excellent Candidate ◽  
Traditionally Prepared ◽  
Particle Size And Morphology ◽  
Size And Morphology

Na0.5Bi0.5TiO3 (NBT) is considered to be an excellent candidate for lead-free piezoelectric ceramics. In this study, we propose a hydrothermal method for the preparation of single phase NBT powder at relatively low treatment-temperature. The particle size and morphology of the synthesized powders were examined by SEM. The powders were further pressed into disk and sintered at 1120°C/2h in air, and its properties and microstructure were compared with traditionally prepared samples.

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