Spherical UO<sub>3</sub>Gel Preparation Using the External Gelation Method

Jeong, Kyung-Chai; Kim, Yeon-Ku; Oh, Seung-Chul; Cho, Moon Sung; Lee, YoungWoo

doi:10.4191/kcers.2005.42.11.729

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…Following this work, a few researchers studied on preparation of SACF and tried to increase the quality of the fibers, including adsorption capacity and mechanical strength, and decrease the cost of the products. Jeong et al [29] evaluated the possibility of using coal tar pitch instead of phenolic resin for coating on glass fiber because of its lower cost compared to phenolic resin. In addition, in other reported work [30] a procedure was described for coating glass fiber by a mixture of coal tar pitch and phenolic resin.…”

Section: A R C H I V E O F S I Dmentioning

confidence: 99%

A Procedure for Preparation of Semi-activated Carbon Fiber without any Treatment under High Temperature

Saeidi

Lotfollahi

2014

IJE

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A procedure for preparing the semi-activated carbon fiber (SACF) at low temperature is proposed. The first step of the procedure is coating of an inorganic fiber (E-glass fiber) by an adsorbent mixture (powder activated carbon) using methyl cellulose and water as gluing material. In this work, a set of experiments were performed to attain appropriate adsorbent mixture for good quality coating. The best composition was investigated based on the adsorption and the mechanical properties of the coated fibers. The results showed that an adsorbent mixture containing 3 to 4 wt% of methyl cellulose, and 15-20 wt% of activated carbon renders good quality coating. The adsorption property of the coated fibers was studied by determination of iodine number for the adsorbent mixture. In this work, the weight percent of the coated adsorbent mixture on the fibers have also been measured and reported. The mechanical properties were examined by flow of air through a packing of the coated fibers. BET surface area of the samples was also examined and compared to other reported works. The results showed that the surfaces area of the samples were either equal to or higher than other disclosed works. In order to test the weight loss of the coated fibers, the weight of packing was measured after 20, 40 and 60 min flowing of air through the packing. The weight loss in all cases was very low (up to 0.001 g); thus good quality of coating was occurred.

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Section: A R C H I V E O F S I Dmentioning

confidence: 99%

A Procedure for Preparation of Semi-activated Carbon Fiber without any Treatment under High Temperature

Saeidi

Lotfollahi

2014

IJE

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UO2 Spheres Produce by External Gelation Process

김연구¹,

사인진²,

김응선³

et al. 2020

Korean. J. Mater. Res.

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Spherical UO₂Kernel and TRISO Coated Particle Fabrication by GSP Method and CVD Technique

Jeong¹,

Kim²,

Oh³

et al. 2010

Journal of the Korean Ceramic Society

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HTGR using a TRISO coated particles as nuclear raw fuel material can be used to produce clean hydrogen gas and process heat for a next-generation energy source. For these purposes, a TRISO coated particle was prepared with 3 pyro-carbon (buffer, IPyC, and OPyC) layers and 1 silicone carbide (SiC) layer using a CVD technique on a spherical UO 2 kernel surface as a fissile material. In this study, a spherical UO 2 particle was prepared using a modified sol-gel method with a vibrating nozzle system, and TRISO coating fabrication was carried out using a fluidized bed reactor with coating gases, such as acetylene, propylene, and methyltrichlorosilane (MTS). As the results of this study, a spherical UO 2 kernel with a sphericity of 1+0.06 was obtained, and the main process parameters in the UO 2 kernel preparation were the well-formed nature of the spherical ADU liquid droplets and the suitable temperature control in the thermal treatment of intermediate compounds in the ADU, UO 3 , and UO 2 conversions. Also, the important parameters for the TRISO coating procedure were the coating temperature and feed rate of the feeding gas in the PyC layer coating, the coating temperature, and the volume fraction of the reactant and inert gases in the SiC deposition.

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Spherical UO₃Gel Preparation Using the External Gelation Method

Cited by 3 publications

References 5 publications

A Procedure for Preparation of Semi-activated Carbon Fiber without any Treatment under High Temperature

A Procedure for Preparation of Semi-activated Carbon Fiber without any Treatment under High Temperature

UO2 Spheres Produce by External Gelation Process

Spherical UO₂Kernel and TRISO Coated Particle Fabrication by GSP Method and CVD Technique

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Spherical UO3Gel Preparation Using the External Gelation Method

Cited by 3 publications

References 5 publications

A Procedure for Preparation of Semi-activated Carbon Fiber without any Treatment under High Temperature

A Procedure for Preparation of Semi-activated Carbon Fiber without any Treatment under High Temperature

UO2 Spheres Produce by External Gelation Process

Spherical UO2Kernel and TRISO Coated Particle Fabrication by GSP Method and CVD Technique

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Product

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Spherical UO₃Gel Preparation Using the External Gelation Method

Spherical UO₂Kernel and TRISO Coated Particle Fabrication by GSP Method and CVD Technique