Froth flotation giant surfactants

Froth flotation giant surfactants
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泡沫浮选巨型表面活性剂

DOI:
10.1016/j.polymer.2018.12.023
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发表时间:
2019-01
期刊:
影响因子:
4.6
通讯作者:
Li Yiwen
Li Yiwen
中科院分区:
化学2区
文献类型:
--
作者:
Li Zongxin;Fu Yu;Li Zhan;Nan Nan;Zhu Yimin;Li Yiwen

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虽然人们在现有的浮选表面活性剂方面已经做了大量的工作,但对更多种类的新型泡沫浮选表面活性剂和助剂的需求仍然很高。本文报道了一系列基于多面体低聚倍半硅氧烷(POSS)的泡沫浮选巨型表面活性剂的简易制备,其通过两步顺序进行的硫醇-烯"点击"反应,具有精确控制的化学结构和可调的多位点表面功能。在石英、赤铁矿和磷灰石的浮选试验中,在广泛的pH条件下,所得的巨型表面活性剂表现出高矿物回收率。我们描述了这些POSS为基础的表面活性剂分子在初步的概念验证研究,并提出这类巨大的两亲物将是有用的浮选分离技术。
Whilst many efforts have been well documented on the readily available flotation surfactants, more kinds of newly-designed surfactants and auxiliary reagents for froth flotation process are still highly demanding. Herein we report the facile fabrication of a series of polyhedral oligomeric silsesquioxanes (POSS)-based froth flotation giant surfactantsviatwo-step sequentially performed thiol-ene “click” reactions, with precisely-controlled chemical structures and tunable multisite surface functionality. The resulting giant surfactants performed high mineral recovery efficiency in the flotation testing of quartz, hematite and apatite in a broad range of pH conditions. We describe these POSS-based surfactant molecules in an initial proof-of-concept study and propose that this class of giant amphiphiles will be useful in flotation separation technique.
DOI: 10.1021/nn700196d
发表时间: 2008-01
期刊: ACS nano
影响因子: 17.1
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