A new ligand with N8O2 donors containing three potential metal-binding sites (H2L) and its tricopper(II) complex 1 are synthesized. The tricopper species is found to be formed from a hypodentate dicopper(II) complex 2 in basic solutions. Complex 2 may be isolated from the reaction of H2L with a copper source under acidic conditions. Complex 2 can undergo CO2-abstraction to yield an octacopper(II) complex 3. The single crystal structures of complexes 2 and 3 are characterized by X-ray crystallography.
合成了一种新的配体,其 N8O2 供体含有三个潜在的金属结合位点 (H2L) 及其三铜 (II) 配合物 1。发现三铜物质是由次齿二铜(II)络合物2在碱性溶液中形成的。络合物2可以从H2L与铜源在酸性条件下的反应中分离出来。配合物 2 可以进行 CO2 萃取,生成八铜 (II) 配合物 3。配合物 2 和 3 的单晶结构通过 X 射线晶体学进行了表征。
Polyamines, synthesis method thereof and use thereof for the selective elimination of H2S from a gaseous effluent comprising CO2
申请人:IFP Energies Nouvelles
公开号:US11136434B2
公开(公告)日:2021-10-05
Polyamines of formula (I), their preparation method and their use in an absorbing solution based on amines in order to selectively eliminate H2S from a gaseous effluent containing H2S and CO2, which polyamines are obtained by a reaction between piperazine and an epihalohydrin or a 1,3-dihalo-2-propanol
NOVEL POLYAMINES, SYNTHESIS METHOD THEREOF AND USE THEREOF FOR THE SELECTIVE ELIMINATION OF H2S FROM A GASEOUS EFFLUENT COMPRISING CO2
申请人:IFP Energies Nouvelles
公开号:US20200148824A1
公开(公告)日:2020-05-14
The invention concerns novel polyamines with formula (I), obtained by the reaction between piperazine and an epihalohydrin or a 1,3-dihalo-2-propanol,
n being in the range 2 to 100, R
1
being equally either an H or an alkyl radical containing between 1 and 8 carbon atoms or a hydroxyalkyl radical having the following general formula (II):
R
2
being equally either an H or an alkyl radical containing between 1 and 6 carbon atoms; two R
2
may be connected together via a covalent bond in order to form a cycle if they are alkyl radicals.
The invention also concerns their preparation method and their use in an absorbing solution based on amines in order to selectively eliminate H
2
S from a gaseous effluent containing H
2
S and CO
2
.