1nm锰矿相的人工合成及其金属阳离子交换特性  

STUDY ON THE SYNTHESIS OF 1 nm MANGANATE AND ITS CATION SUBSTITUTION CHARACTERISTICS

作　　者：钱江初[1] 初凤友[1] 冯旭文[1] 

机构地区：[1]国家海洋局第二海洋研究所

出　　处：《矿物学报》2004年第4期334-340,共7页Acta Mineralogica Sinica

基　　金：国家大洋专项(DY105 01 01 01)

摘　　要：人工合成了纯净的1nm锰矿相,并进行1nm锰矿相的离子交换实验,发现1nm锰矿相具有很强的离子交换能力,这可能是多金属结核为何能够大量富集铜、钴、镍等有价金属元素的重要原因之一;不同的金属离子和1nm锰矿相发生交换反应的能力也不相同,结核中几种主要的金属离子和1nm锰矿相的交换能力的优先顺序排列为:Cu2+>Co2+>Zn2+≥Ni2+>Ca2+>Mg2+,其原因可能是由于1nm锰矿相具有特殊的类似隧道结构以及各金属离子的特性不同所造成的。The key factor to synthesize the 1 nm manganate is to properly control the oxidation degree of the products, otherwise the products will mostly be the mixtures of 1 nm manganate with other manganates. The experiment on the substitution of 1 nm manganate with divalent cations indicates that 1 nm manganate has very strong cation substitution capacity, and it is inferred to be one of the main reasons why the oceanic polymetallic nodule could enrich such high contents of valuable metal elements such as Cu, Co and Ni. Different cations have different substitution abilities in the cation substitution reaction with 1 nm manganate. The preference sequence of cation substituted into 1 nm manganate is Cu^(2+)> Co^(2+)> Zn^(2+ )≥^( )Ni^(2+)> Ca^(2+ )> ^( )Mg^(2+). The main reason for the strong capacity of cation exchange might be that the 1 nm manganate possesses a tunnel-like structure.

关 键 词：矿相 锰矿 有价金属 离子交换 富集 金属离子 CU^2+ NI^2+ ZN^2+ MG^2+ 

分 类 号：P575.4[天文地球—矿物学] TF046.4[天文地球—地质学]