Use of amino-containing neutral phosphine extractant in extraction and separation of thorium and process of using same
申请人:CHANGCHUN INSTITUTE OF APPLIED CHEMISTRY, CHINESE ACADEMY OF SCIENCES
公开号:US10081554B2
公开(公告)日:2018-09-25
The present invention relates to use of an amino-containing neutral phosphine extractant of Formula I in extraction and separation of thorium, and a process of extracting and separating thorium using the amino-containing neutral phosphine extractant of Formula I,
wherein, R1 and R2 are each independently selected from the group consisting of C1-C12 alkyl, R3 and R4 are each independently selected from the group consisting of C1-16 alkyl and hydrogen, and n is an integer of 1 to 8.
本发明涉及式 I 含氨基中性膦萃取剂在萃取和分离钍中的用途,以及使用式 I 含氨基中性膦萃取剂萃取和分离钍的工艺、
其中,R1和R2各自独立地选自C1-C12烷基组成的组,R3和R4各自独立地选自C1-16烷基和氢组成的组,n为1至8的整数。
Preparation method for directly synthesizing titanium dioxide from titanium-rich organic phase prepared from ilmenite
申请人:Fujian Kuncai Material Technology Co., Ltd.
公开号:US10377639B2
公开(公告)日:2019-08-13
The present invention relates to a method for directly synthesizing titanium dioxide from a titanium-rich organic phase prepared from ilmenite, and more particularly to a method in which a titanium-rich acidolysis solution is obtained by an efficient ore dissolving technology, titanium ions are transferred to the organic phase by means of an effective titanium extractant to obtain a high-purity and titanium-rich organic phase, and then the titanium dioxide is directly synthesized in the organic phase. With this method, the dissolution rate of ilmenite can be effectively improved, the process flow is shortened and production costs are reduced, and titanium dioxide with high yield and high quality is obtained.
Petrov,K.A. et al., Journal of general chemistry of the USSR, 1961, vol. 31, p. 2962 - 2965
作者:Petrov,K.A. et al.
DOI:——
日期:——
FRY, S. E.;PIENTA, N. J., J. ORG. CHEM., 1984, 49, N 25, 4877-4880
作者:FRY, S. E.、PIENTA, N. J.
DOI:——
日期:——
USE OF AMINO-CONTAINING NEUTRAL PHOSPHINE EXTRACTANT IN EXTRACTION AND SEPARATION OF THORIUM AND PROCESS OF USING SAME
申请人:CHANGCHUN INSTITUTE OF APPLIED CHEMISTRY, CHINESE ACADEMY OF SCIENCES
公开号:US20170267540A1
公开(公告)日:2017-09-21
The present invention relates to use of an amino-containing neutral phosphine extractant of Formula I in extraction and separation of thorium, and a process of extracting and separating thorium using the amino-containing neutral phosphine extractant of Formula I,
wherein, R
1
and R
2
are each independently selected from the group consisting of C
1
-C
12
alkyl, R
3
and R
4
are each independently selected from the group consisting of C
1-16
alkyl and hydrogen, and n is an integer of 1 to 8.