引用本文:
刘建, 王秀山, 杨子超, 阎居梅. 萃淋树脂Cl-P507吸附、分离钨钼的研究Ⅱ.树脂吸附分离钨钼的机理[J]. 应用化学,
1992, 9(1): 42-46.
Citation: Liu jian, Wang Xiushan, Yang Zichao, Yan Jumei. SEPARATION OF W AND Mo BY CL-P507 EXTRACTION RESIN Ⅱ. ADSORPTION AND SEPARATION MECHANISM OF W AND Mo[J]. Chinese Journal of Applied Chemistry, 1992, 9(1): 42-46.
Citation: Liu jian, Wang Xiushan, Yang Zichao, Yan Jumei. SEPARATION OF W AND Mo BY CL-P507 EXTRACTION RESIN Ⅱ. ADSORPTION AND SEPARATION MECHANISM OF W AND Mo[J]. Chinese Journal of Applied Chemistry, 1992, 9(1): 42-46.
萃淋树脂Cl-P507吸附、分离钨钼的研究Ⅱ.树脂吸附分离钨钼的机理
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。
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关键词:
- 钨
- / 钼
- / 萃淋树脂
- / 机理
- / 2-乙基己基膦酸单(2-乙基己基)酯
English
SEPARATION OF W AND Mo BY CL-P507 EXTRACTION RESIN Ⅱ. ADSORPTION AND SEPARATION MECHANISM OF W AND Mo
Abstract:
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 MoO2L2 (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:MoO22++2HL=MoO2L2+2H+. The co-adsorption of W is a hydrogen bond association process.
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Key words:
- tungstun
- / molybdenum
- / mechanism
- / mono (ethyl hexyl)-ethyl hexyl phosphonate
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