RARE-EARTH SEPARATION USING A CHEMICAL-VAPOR TRANSPORT PROCESS MEDIATED BY VAPOR COMPLEXES OF THE LNCL3-ALCL3 SYSTEM

被引：59

作者：

MURASE, K ^{[1
]}

SHINOZAKI, K ^{[1
]}

HIRASHIMA, Y ^{[1
]}

MACHIDA, K ^{[1
]}

ADACHI, G ^{[1
]}

机构：

[1] OSAKA UNIV, FAC ENGN, DEPT APPL CHEM, 2-1 YAMADAOKA, SUITA, OSAKA 565, JAPAN

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1993年 / 198卷 / 1-2期

关键词：

D O I：

10.1016/0925-8388(93)90139-E

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Mutual separations of rare earth chlorides in the Pr-Er, Pr-Sm and Pr-Nd binary systems and the Pr-Gd-Er ternary system were performed using chemical vapour transportation of vapour complexes LnAlnCl3+3n (Ln, rare earths). Heavier rare earth chlorides were more readily transported and concentrated in the deposits in lower temperature zones while lighter ones were selectively deposited in higher temperature zones. Good separation characteristics (efficiency and purity) were observed for the resulting LnCl3 deposits by optimization of temperature gradients for the selective deposition of LnCl3 and by repeating the transport reaction. The separation factors, expressed as atomic ratios for the resulting chlorides, Pr:Er and Pr:Sm, were equal to 10.8 and 2.3 respectively.

引用

页码：31 / 38

页数：8

共 30 条

[11] HIRAYAMA C, 1977, J ILLUM ENG SOC, P209
[12] HOEKSTRA HR, 1979, P S CHARACTERIZATION, P123
[13] KAPOSI O, 1983, HIGH TEMP SCI, V16, P311
[14] VAPOR-LIQUID-EQUILIBRIA IN THE SYSTEM TII-NDI3
KNAPSTAD, B
OSTVOLD, T
OYE, HA
[J]. ACTA CHEMICA SCANDINAVICA SERIES A-PHYSICAL AND INORGANIC CHEMISTRY, 1987, 41 (02): : 98 - 103
[15] COMPLEX MOLECULES IN CESIUM RARE EARTH IODIDE VAPORS
LIU, CS
ZOLLWEG, RJ
[J]. JOURNAL OF CHEMICAL PHYSICS, 1974, 60 (06) : 2384 - 2390
[16] METAL HALIDE VAPOR COMPLEXES - VAPOR TRANSPORT AND LAMP EXPERIMENTS
MCPHAIL, DS
HOCKING, MG
JEFFES, JHE
[J]. JOURNAL OF MATERIALS SCIENCE, 1985, 20 (02) : 457 - 466
[17] THERMODYNAMIC CONSIDERATIONS OF METAL HALIDE VAPOR COMPLEXES
MCPHAIL, DS
HOCKING, MG
JEFFES, JHE
[J]. JOURNAL OF MATERIALS SCIENCE, 1985, 20 (02) : 449 - 456
[18] GAS COMPLEXATION IN THE NAI-ERI3 SYSTEM
METALLINOU, MM
HERSTAD, O
OSTVOLD, T
PAPATHEODOROU, GN
[J]. ACTA CHEMICA SCANDINAVICA, 1990, 44 (07): : 683 - 687
[19] RECOVERY OF RARE METALS FROM THE SLUDGE OF SAMARIUM-COBALT MAGNETIC ALLOY BY A CHEMICAL VAPOR TRANSPORTING METHOD
MURASE, K
MACHIDA, K
ADACHI, G
[J]. CHEMISTRY LETTERS, 1992, (08) : 1555 - 1558
[20] MUTUAL SEPARATION CHARACTERISTICS AND MECHANISM FOR LANTHANOID ELEMENTS VIA GAS-PHASE COMPLEXES WITH ALKALINE METAL AND OR ALUMINUM CHLORIDES
MURASE, K
SHINOZAKI, K
MACHIDA, K
ADACHI, GY
[J]. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 1992, 65 (10) : 2724 - 2728

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