Synthesis of a Si-Al gel as a starting material of aluminosilicate solids

Sato, Junya; Shiota, Kenji*; Takaoka, Masaki*

Zairyo, 70(5), p.406 - 411, 2021/05

https://doi.org/10.2472/jsms.70.406

An aluminosilicate solid is an inorganic material that has the property of immobilizing heavy metals or radionuclides in the matrix. In this study, aluminosilicates with a Si/Al molar ratio of 0.5 was synthesized from a chemical reagent in order to produce aluminosilicate solids with a low Si/Al molar ratio, which were expected to improve the immobilization of heavy metals and radionuclides contained in the matrix. The synthesized Si-Al gel with a Si/Al molar ratio of 0.5 had little impurity content and was in an amorphous phase. In addition, the compressive strength of the aluminosilicate solid produced by the synthesized Si-Al gel showed a 5 MPa or more, confirming that it can be used as a raw material for aluminosilicate solids. The aluminosilicate solid with a Si/Al molar ratio of 1.25 had a dense surface structure from the result of BSE images and had the highest compressive strength among all samples.

Experimental setup and procedure for the measurement of the Be(n,p)Li reaction at n_TOF

Barbagallo, M.*; Andrzejewski, J.*; Mastromarco, M.*; Perkowski, J.*; Damone, L. A.*; Gawlik, A.*; Kimura, Atsushi; n_TOF Collaboration*; 122 of others*

Nuclear Instruments and Methods in Physics Research A, 887, p.27 - 33, 2018/04

https://doi.org/10.1016/j.nima.2017.12.025

Synthesis of silicon carbide nanotubes

Taguchi, Tomitsugu; Igawa, Naoki; Yamamoto, Hiroyuki; Jitsukawa, Shiro

Journal of the American Ceramic Society, 88(2), p.459 - 461, 2005/02

https://doi.org/10.1111/j.1551-2916.2005.00066.x

Single phase silicon carbide (SiC) nanotubes were succeeded in synthesized by the reaction of carbon nanotubes (CNTs) with Si powder at 1200 C for 100 h. The X-ray diffraction patterns indicate that much CNTs reacted at 1200 C for 100 h was transformed to SiC. The results of TEM observation reveal that not only the coexisted nanotubes with SiC and graphite phase but also single phase SiC nanotubes were synthesized by reacting for 100 h. The proportion of single phase SiC nanotubes to the coexisted nanotubes increased by heat treatment at 600 C in air for 1 h since the remained carbon was removed.

The Principle in the use of positron-emitting nuclides

Sekine, Toshiaki

Nihon Dojo Hiryo Gaku Zasshi, 71(6), p.928 - 929, 2000/11

no abstracts in English

Proposal of the research complex for the neutron science; The First plan

JAERI-Tech 99-030, 203 Pages, 1999/03

JAERI-Tech-99-030.pdf:12.23MB

no abstracts in English

Fission fragment radiolysis in ethane-ammonia system

Shimizu, Saburo; Ikezoe, Yasumasa;

Journal of Nuclear Science and Technology, 13(12), p.738 - 742, 1976/12

https://doi.org/10.3327/jnst.13.738

no abstracts in English

Effects of heating temperature and irradiation on the catalytic activities of active carbons for phosgene synthesis

; Yoneda, Yukio*

Bulletin of the Chemical Society of Japan, 41(4), p.824 - 827, 1968/00

https://doi.org/10.1246/bcsj.41.824

no abstracts in English