Development of palladium separation process from nitric acid medium utilizing a new hybrid multi-nitrogen adsorbent
Development of palladium separation process from nitric acid medium utilizing a new hybrid multi-nitrogen adsorbent
复制标题
利用新型混合多氮吸附剂从硝酸介质中分离钯工艺的开发
DOI：
10.1016/j.seppur.2017.07.057
复制
发表时间：
2017
影响因子：
8.6
通讯作者：
Xinchen Dong
中科院分区：
文献类型：
--
作者：
A. Zhang;Wen;Xinchen Dong
贵金属钯的高效分离是目前尚未解决的最具挑战性的工作之一。基于软配体多氮有机试剂，制备了一种新型含三嗪杂化功能硅胶吸附剂BisDiOTP@SiO2，并对其进行了表征。在0.4 - 5.0 M HNO 3的宽范围内研究了十种以上代表性金属对BisDiOTP@SiO2的吸收。表明Pd（II）对BisDiOTP@SiO2的高吸收能力和优异的选择性。富集和去除Pd（II）的分批实验，通过六个周期的吸收和解吸进行。Pd（II）的分离效率为99.3%，Co（II）的分离效率为5.9%，而所有其它的分离效率均小于0.2%。Pd（II）与其它组分得到了有效分离。本文提出了一种萃取色谱同时分配MA（III）/Pd（II）的新工艺，用于分离沿着少量锕系元素的Pd（II）。
The efficient separation of palladium, one of the precious metals, is one of the most challenging works that have not been solved. Based on soft-ligand multi-nitrogen organic agents, a new triazine-containing hybrid functional silica-adsorbent, BisDiOTP@SiO2, was prepared and characterized. The uptake of more than ten representative metals towards BisDiOTP@SiO2was investigated in the wide range of 0.4 –5.0 M HNO3. The high uptake ability and excellent selectivity of Pd(II) towards BisDiOTP@SiO2were indicated. The enrichment and removal of Pd(II) by batch experiments through six cycles of uptake and desorption were conducted. The separation efficiency was 99.3% for Pd(II), 5.9% for Co(II) and less than 0.2% for all others. Pd(II) was separated effectively from others. A new technical process entitled SPMP (SimultaneousPartitioning ofMA(III)/Pd(II) by Extraction Chromatography) for Pd(II) separation along with minor actinides has been developed.