Refine your search:     
Report No.
 - 
Search Results: Records 1-13 displayed on this page of 13
  • 1

Presentation/Publication Type

Initialising ...

Refine

Journal/Book Title

Initialising ...

Meeting title

Initialising ...

First Author

Initialising ...

Keyword

Initialising ...

Language

Initialising ...

Publication Year

Initialising ...

Held year of conference

Initialising ...

Save select records

JAEA Reports

XAFS measurement of simulated waste glass samples (Joint research)

Nagai, Takayuki; Sasage, Kenichi; Okamoto, Yoshihiro; Shiwaku, Hideaki; Yamagishi, Hirona*; Ota, Toshiaki*; Inose, Takehiko*; Sato, Seiichi*; Hatakeyama, Kiyoshi*; Takahashi, Tomoe*; et al.

JAEA-Research 2019-003, 94 Pages, 2019/09

JAEA-Research-2019-003.pdf:7.92MB

The local structures of glass-forming elements and waste elements would change by the chemical composition of waste glass including those elements. In this study, simulated waste glass samples were prepared from borosilicate glass frit including phosphorus (P) or vanadium (V), and we investigated local structures of boron, sodium, and waste elements in these P glass and V glass samples by using synchrotron XAFS measurements in soft and hard X ray region.

Journal Articles

Proton chelating ligands drive improved chemical separations for rhodium

Narita, Hirokazu*; Nicolson, R. M.*; Motokawa, Ryuhei; Ito, Fumiyuki*; Morisaku, Kazuko*; Goto, Midori*; Tanaka, Mikiya*; Heller, W. T.*; Shiwaku, Hideaki; Yaita, Tsuyoshi; et al.

Inorganic Chemistry, 58(13), p.8720 - 8734, 2019/07

 Times Cited Count:0 Percentile:100(Chemistry, Inorganic & Nuclear)

Journal Articles

Chemical behavior of platinum group compounds in the vitrification process condition

Nagai, Takayuki; Akiyama, Daisuke*; Sato, Nobuaki*; Sasage, Kenichi

Busshitsu, Debaisu Ryoiki Kyodo Kenkyu Kyoten Kenkyu Seika Hokokusho (Heisei-28-Nendo) (CD-ROM), 1 Pages, 2017/03

no abstracts in English

Journal Articles

Hydroformylation of olefins by a rhodium single-atom catalyst with activity comparable to RhCl(PPh$$_{3}$$)$$_{3}$$

Lang, R.*; Li, T.*; Matsumura, Daiju; Miao, S.*; Ren, Y.*; Cui, Y.-T.*; Tan, Y.*; Qiao, B.*; Li, L.*; Wang, A.*; et al.

Angewandte Chemie; International Edition, 55(52), p.16054 - 16058, 2016/12

Journal Articles

Development of radiation detectors for in-pile measurement

Takeuchi, Tomoaki; Otsuka, Noriaki; Shibata, Hiroshi; Nagata, Hiroshi; Endo, Yasuichi; Matsui, Yoshinori; Tsuchiya, Kunihiko

KAERI/GP-418/2015, p.110 - 112, 2015/00

$$gamma$$ irradiation experiments with a $$^{60}$$Co source were carried out for developing Self-Powered Gamma Detectors (SPGDs) with lead (Pb) emitter and Self-Powered Neutron Detectors (SPNDs) with Pt-40%Rh emitter prior to in-core irradiation experiments. The results showed the output currents of the SPGDs were proportional to the $$gamma$$ dose rate in the range from about 200-6000 Gy/h with about 10% accuracy. In the case of SPNDs, the output currents flowed in inverse direction and were an order of magnitude lower compared with that of the SPGDs. These different behaviors of the output currents are considered to be caused by the difference in the emitter sizes and the current component originated at the MI cables.

Journal Articles

In-situ XAFS analysis of Y zeolite-supported Rh catalysts during high-pressure hydrogenation of CO$$_{2}$$

Bando, Kyoko*; Saito, Takeru; Sato, Koichi*; Tanaka, Tomoaki*; Dumeignil, F.*; Imamura, Motoyasu*; Matsubayashi, Nobuyuki*; Shimada, Hiromichi*

Topics in Catalysis, 18(1-2), p.59 - 65, 2002/01

no abstracts in English

Journal Articles

Recovery of technetium with active carbon column in partitioning process of high-level liquid waste

; Kubota, Masumitsu

Journal of Nuclear Science and Technology, 30(7), p.717 - 719, 1993/07

 Times Cited Count:10 Percentile:21.57(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Separation of geometric isomers of metal $$beta$$-diketonates by supercritical fluid chromatography

K.E.Laintz*; Meguro, Yoshihiro; ; Tachikawa, Enzo

J. High Resolut. Chromatogr., 16, p.372 - 375, 1993/06

no abstracts in English

JAEA Reports

Effects of Noble Metal Elements on Properties of Simulated Vitrified Products for High-Level Liquid Waste

; ; Takahashi, Takeshi

PNC-TN8410 91-247, 29 Pages, 1991/12

PNC-TN8410-91-247.pdf:0.8MB

The effects of noble metal elements such as ruthenium, rhodium and palladium on the viscosity and electrical resistivity of simulated nuclear waste glass were studied. The glass enriched with noble metals showed the viscosity of a non-Newtonian fluid. The viscosity of the waste g1ass with 10 wt% RuO$$_{2}$$ was 3 to 7 times higher than that of glass without noble metals. The RuO$$_{2}$$ was mainly responsible for the increase in viscosity for the glass enriched with noble metals. Electrical resistivity of the glass with 15 wt% RuO$$_{2}$$, was one seventh to two orders of magnitude lower than that of glass without noble metals. The three noble metals contributed to the decrease in resistivity. The quantitative effects of noble metals on these properties were obtained.

JAEA Reports

The draing of noble metals in vitrified nuclear waste by a melter with a sloping floor -Research Report on Solidification of High-Level Liquid waste

; Takahashi, Takeshi

PNC-TN8410 91-158, 19 Pages, 1991/04

Joule heated ceramic melter has been developed to vitrify high-level liquid wastes (HLLW) from reprocessing nuclear spent fuel at Power Reacter and Nuclear Fuel Development Corporation (PNC). Noble metal elements such as ruthenium, paladium and rhodium are contained as fission products in the HLLW. The operational chracteristics of Joule-heated ceramic melter were studied on the effects of these elements. Two small scale melters with sloped floor were fabricated and tested. The slope was 30$$^{circ}$$ and 45$$^{circ}$$ for each. The operational characteristics including electrode resistance, temperature profile etc. were monitored. The drain efficiency of noble metal elements from the melters during the glass drain operation were evaluated. After the test operation, the melters were cut after cooled with the glass left in the melting cavities, following the termination of the test operations. The sediments of the precipitations of the noble metal elements were evaluated from the sectional observation for the melter. The results from the studies were compared between 30$$^{circ}$$ and 45$$^{circ}$$ slopes and discussed. It was concluded that the 45$$^{circ}$$ sloped floor was clearly effective to drain the noble metal elements and the structure of the 45$$^{circ}$$ sloped floor melter was compatible with some amount of precipitates at the bottom.

Journal Articles

Oral presentation

Solvent extraction behavior of rhodium from nitric acid solutions

Morita, Misaki*; Araki, Yuta*; Uehara, Akihiro*; Fukutani, Satoshi*; Tsubata, Yasuhiro; Matsumura, Tatsuro; Fujii, Toshiyuki*

no journal, , 

no abstracts in English

Oral presentation

Investigation of platinum group compounds generated in the vitrification process, 1; Synthetic experiments of ruthenium, rhodium, and glass frit

Nagai, Takayuki; Kobayashi, Hidekazu; Okamoto, Yoshihiro; Shiwaku, Hideaki; Akiyama, Daisuke*; Sato, Nobuaki*

no journal, , 

no abstracts in English

13 (Records 1-13 displayed on this page)
  • 1