Trichloroethylene replacements for the cleaning of silicone oil used in the internal gelation process

2021 ◽  
pp. 153379
Author(s):  
J.L Collins ◽  
R.D. Hunt ◽  
M.R. Bond ◽  
K.K. Patton ◽  
M.P. Quinn ◽  
...  
Keyword(s):  
Silicone Oil ◽  
Internal Gelation ◽  
Gelation Process

The Formation of Alumina Ceramic Microspheres by Internal Gelation Process

2015 ◽  
Vol 655 ◽  
pp. 103-107 ◽  
Author(s):  
Yong Gao ◽  
Jing Tao Ma ◽  
Xing Yu Zhao ◽  
Shao Chang Hao ◽  
Chang Sheng Deng
Keyword(s):  
Silicone Oil ◽  
Average Diameter ◽  
Alumina Ceramic ◽  
Internal Gelation ◽  
Uniform Size ◽  
Gelation Process ◽  
Crush Strength

Alumina ceramic microspheres were prepared via internal gelation process. By dropping sol from a cold broth into hot silicone oil gelled microspheres would solidify within a few seconds by decomposition of hexamethylenetetramine (HMTA). The effect of the broth component on the performance of the broth and gelled microspheres obtained has been investigated. The Al2O3 ceramic microspheres can be obtained after aging, washing, drying and sintering. The Al2O3 microspheres prepared with optimized formulation have uniform size and good sphericity, with an average diameter of 690μm and crush strength of greater than 12N/sphere.

Fabrication of CeO2 ceramic spheres as a surrogate of nuclear fuel by an improved microwave-assisted rapid internal gelation process

2018 ◽  
Vol 44 (6) ◽  
pp. 6739-6746 ◽  
Author(s):  
Wei Tian ◽  
M.A. Pouchon ◽  
Hangxu Guo ◽  
Denglei Chen ◽  
Xiaojie Yin ◽  
...  
Keyword(s):  
Nuclear Fuel ◽  
Internal Gelation ◽  
Gelation Process ◽  
Microwave Assisted

An improved internal gelation process without cooling the solution for preparing uranium dioxide ceramic microspheres

2018 ◽  
Vol 44 (2) ◽  
pp. 2524-2528 ◽  
Author(s):  
Sa Li ◽  
Jing Bai ◽  
Shiwei Cao ◽  
Xiaojie Yin ◽  
Cunmin Tan ◽  
...  
Keyword(s):  
Uranium Dioxide ◽  
Internal Gelation ◽  
Gelation Process

Review and current status of emulsion/dispersion technology using an internal gelation process for the design of alginate particles

2006 ◽  
Vol 23 (3) ◽  
pp. 245-257 ◽  
Author(s):  
Catarina P. Reis ◽  
Ronald J. Neufeld ◽  
Sandra Vilela ◽  
António J. Ribeiro ◽  
Francisco Veiga
Keyword(s):  
Current Status ◽  
Internal Gelation ◽  
Gelation Process

Preparation of Alumina and Alumina-Ceria Microspheres using an Internal Gelation Process and their Characterization

2012 ◽  
Vol 71 (2) ◽  
pp. 101-109 ◽  
Author(s):  
B. V. Gangar ◽  
K. Nagarajan ◽  
R. Venkata Krishnan ◽  
A. B. Pandit
Keyword(s):  
Internal Gelation ◽  
Gelation Process

Effect of Ammonia on CeO2 Microspheres Prepared by Internal Gelation Process

2018 ◽  
Vol 281 ◽  
pp. 9-14
Author(s):  
Xue Qiang Ding ◽  
Jing Tao Ma ◽  
Xing Yu Zhao ◽  
Shao Chang Hao ◽  
Chang Sheng Deng ◽  
...  
Keyword(s):  
Grain Size ◽  
Surface Morphology ◽  
Cerium Dioxide ◽  
Smooth Surface ◽  
Molar Ratio ◽  
Internal Gelation ◽  
Compact Structure ◽  
Gelation Process ◽  
The Stability

The internal gelation process was used to prepare cerium dioxide microspheres. The effect of ammonia on the stability of the precursor solutions was investigated with the NH3∙H2O/Ce (NH4)2(NO3)6 molar ratio from 0 to 1.25. The surface morphology and microstructure of the sintered CeO2 microspheres were analyzed. With the increase of NH3∙H2O/Ce (NH4)2(NO3)6 molar ratio, the solutions became more unstable, which indicated that their gelation was initiated. When the NH3∙H2O/Ce (NH4)2(NO3)6 ratio varied from 0 to 0.75, the surface of the microspheres became rougher and grain size became larger. Further increase in the NH3∙H2O/Ce (NH4)2(NO3)6 ratios to 1 and 1.25 led to CeO2 microspheres with smooth surface and compact structure.

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