Effects of hydrothermal synthesis conditions on high purity TiO2 preparation via sulfate process

2020 ◽  
Author(s):  
Congxue Tian
Keyword(s):  
Hydrothermal Synthesis ◽  
High Purity ◽  
Synthesis Conditions ◽  
Sulfate Process

Preparation of Silicalite-1 Membranes with Seeding Method and its Separation Performance for Low Ethanol/Water Mixture

2013 ◽  
Vol 807-809 ◽  
pp. 591-595
Author(s):  
Hong Liang Chen ◽  
Ji Song Yang ◽  
Yan Wang ◽  
Hui Ying Li ◽  
Xin Xin Li ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Separation Factor ◽  
High Performance ◽  
Separation Performance ◽  
Water Mixture ◽  
Synthesis Conditions ◽  
Seeding Method

High performance silicalite-1 membranes were successfully synthesized on silica tubes by seeding method after filling the tubes with water and glycerol mixtures. After seeding the silica tubes with 200 nm seeds, all the silicalite-1 membranes show acceptable separation performance towards ethanol/water mixture after 4-12 h hydrothermal synthesis, and the highest flux of membrane with 8 h hydrothermal synthesis reaches about 0.98 kg/m2.h and the separation factor reaches about 60 towards 3 wt.% ethanol/water mixture. This result shows that the as-synthesized silicalite-1 membrane can concentrate the ethanol from 3% to about 65%, and the ethanol can be obtained over 600 g/m2.h by using the silicalite-1 membrane, which shows that seeding method and suitable control of synthesis conditions is possible for preparing high-performance silicalite-1 membranes.

Hydrothermal synthesis, hierarchical structures and properties of blue pigments SrCuSi4O10 and BaCuSi4O10

CrystEngComm ◽  
2014 ◽  
Vol 16 (24) ◽  
pp. 5418-5423 ◽  
Author(s):  
Yan Chen ◽  
Mingyu Shang ◽  
Xiaofeng Wu ◽  
Shouhua Feng
Keyword(s):  
Hydrothermal Synthesis ◽  
Green Chemistry ◽  
High Purity ◽  
Good Yield ◽  
Near Infrared ◽  
Hierarchical Structures ◽  
Infrared Luminescence ◽  
Structures And Properties

In this work, a green chemistry strategy was developed to synthesize blue pigments SrCuSi4O10 and BaCuSi4O10 with good yield and high purity. SrCuSi4O10 and BaCuSi4O10 exhibit hierarchical structures. Our study shows that hydrothermally synthesized BaCuSi2O6 exhibits interesting broad near-infrared luminescence.

The effect of reaction medium and hydrothermal synthesis conditions on morphological parameters and thermal behavior of calcium phosphate nanoparticles

2021 ◽  
Vol 47 (2) ◽  
pp. 2809-2821 ◽  
Author(s):  
Evgeniya A. Syukkalova ◽  
Anastasia V. Sadetskaya ◽  
Natalya D. Demidova ◽  
Natalia P. Bobrysheva ◽  
Mikhail G. Osmolowsky ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Calcium Phosphate ◽  
Thermal Behavior ◽  
Reaction Medium ◽  
Morphological Parameters ◽  
Synthesis Conditions ◽  
Calcium Phosphate Nanoparticles
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