1) Lewis basic extractant mixture
Lewis碱性混合萃取剂
2) Lewis basic extractant
Lewis碱性萃取剂
1.
In this paper,the determination of basicity of Lewis basic extractant and its mixture solvent was first proposed on the basis of extraction behavior of HCl and the appropriate stoichiometric ratio of solute to extractant.
目前,萃取剂的基本常数的测定主要集中于酸性磷氧类萃取剂[4~8],且主要采用pH滴定法,有关Lewis碱性萃取剂基本常数的研究尚未见报道。
3) mixed extractant
混合萃取剂
1.
In separation processes of nickel, cobalt and copper, the effects of constitutions and compositions of mixed extractants combined with D 2EHPA, PC-88A and Cyanex 272 on separation factors have been studied experimentally.
研究了D2EHPA、PC-88A、Cyanex272混合萃取剂分离镍、钴、铜过程中,混合萃取剂组成对分离因素的影响,结果表明:采用D2EHPA与PC-88A的混合萃取剂一步萃取循环分离镍、钴、铜溶液,技术及经济上均合理可行。
2.
The use of organophosphorus mixed extractants and centrifugal extractor in the separation of nickel and cobalt was investigated.
考查了磷酸类混合萃取剂和离心萃取器在镍钴分离中的应用,采用P507、P204磷酸类混合萃取剂,通过正交实验得到最佳工艺条件后,使用LH50型离心萃取器,并调整通量等参数,使两相夹带均小于1%。
4) Lewis basic solvent
Lewis碱性溶剂
1.
Compared with the spectra in neutral solvent such as cyclohexane, the spectra in some Lewis basic solvents were red shifted, and the relative absorption strength ratio of α band to β band decreased.
结果发现 ,两种金属卟啉可以与一些Lewis碱性溶剂发生轴向配位作用 ,形成轴向加合物 ,加合物的紫外可见吸收光谱红移 ,α和β吸收带的相对吸收强度比减小 ;金属卟啉和Lewis碱性溶剂之间的轴向配位作用受溶剂碱性和立体构造的影响 ,碱性强、立体阻碍小的Lewis碱性溶剂 (如正丁胺 )易于与金属卟啉发生轴向配位反应 ,VOOEP/正丁胺体系的等吸收点在 4 12 ,5 39,5 78nm处 ,NiOEP/正丁胺体系的等吸收点在 4 0 8,5 2 7,5 6 8nm处。
5) phosphorous mixer extractant
磷类混合萃取剂
6) Compound catalyst of lewis acid-lewis base
Lewis酸-Lewis碱复合催化剂
补充资料:Lewis number
分子式:
CAS号:
性质:热扩散系数与分子扩散系数Dv的比值,以Le(或NLe)表示,无量纲,为处理同时有热传递与物质传递时反映物性的数群(k为导热系数,cp为定压比热,ρ为密度)。
CAS号:
性质:热扩散系数与分子扩散系数Dv的比值,以Le(或NLe)表示,无量纲,为处理同时有热传递与物质传递时反映物性的数群(k为导热系数,cp为定压比热,ρ为密度)。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条