【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。更多还原

【Abstract】 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 Cu²⁺> Co²⁺> Zn²⁺ ≥ Ni²⁺> Ca²⁺ > Mg²⁺. The main reason for the strong capacity of cation exchange might be that the 1 nm manganate possesses a tunnel-like structure.更多还原