摘要
本文研究了萃淋树脂Cl-P507吸附分离钨钼的机理,测定了吸附过程的热焓值,表明树脂对钼的吸附为放热过程;确定了树脂吸附钼属阳离子交换过程,对钨的共吸附属氢键缔合机理,并确定了钼吸萃物的组成。
The adsorption and separation mechanism of Mo and W by Cl-P507 extraction resin have been investigated. The adsorption reaction enthalpies of the resin at 25 to 58℃ were determined as (ΔH=19.7kJ/mol) (for Mo), and (ΔH=4.18kJ/mol) (for W). The composition of extracted complex is MoO_2L_2 (HL=P507) as determined by the saturation and slope method. Based on the UV spectra and IR speetra, the adsorption mechanism for Mo is proved to be a cation exchange reaction: MoO_2^(2+)+2HL=MoO_2L_2+2H^+. The co-adsorption of W is a hydrogen bond association process.
出处
《应用化学》
CAS
CSCD
北大核心
1992年第1期42-46,共5页
Chinese Journal of Applied Chemistry
关键词
钨
钼
萃淋树脂
吸附
分离
tungstun, molybdenum, mechanism, mono (ethyl hexyl)-ethyl hexyl phosphonate
