Properties of a New Strong Base Anion Exchanger Containing Structurally bound Tertiary Sulfonium Cations
Properties of a New Strong Base Anion Exchanger Containing Structurally bound Tertiary Sulfonium Cations
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含有结构结合叔锍阳离子的新型强碱性阴离子交换剂的特性
DOI：
10.1021/j150566a028
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发表时间：
1958
期刊：
影响因子：
--
通讯作者：
G. E. Myers
中科院分区：
文献类型：
--
作者：
S. Lindenbaum;G. Boyd;G. E. Myers
采用一种新型的亚甲基交联强碱阴离子交换剂（含叔磺酸离子），测量了选择性系数、阴离子交换速率、吸水等温线以及锌（II）和铁（III）在浓电解质溶液中的吸收率。用13种阴离子盐形态测定的选择性系数尺度与季铵型阴离子交换剂的选择系数尺度基本相同。在饱和蒸汽压下，给定盐形态的吸水量越大，溴化物离子的亲和力就越大。叔磺酸阴离子交换剂在低水汽活度时的水化程度明显高于季铵型，而在高水汽活度时则相反。25℃时，溴离子在磺胺交换剂中的自扩散系数为1.18 × 10/sup -7/ sec/sup -1/，明显小于同等温度下季铵交换剂的自扩散系数。微量Zn（II）和Fe（III）从盐酸和氯化锂溶液中被强烈吸收，并且这种吸收随电解质浓度的增加而增加，其方式与季铵型阴离子交换剂相似。(认证)
Selectivity coefficients, rates of anion exchange, water absorption isotherms, and the absorptions of Zn(II) and Fe(III) from concentrated electrolyte solutions were measured using a new, methylene cross-linked, strongbase anion exchanger containing structurally-bound tertiary sulfonium cations. The selectivity coefficient scale, determined using thirteen anion salt forms, was nearly identical with that for quaternary ammonium type anion exchangers. The greater the water uptake at saturation vapor pressure by a given salt form the greater the bromide ion affinity. The tertiary sulfonium anion exchanger was appreciably more hydrated at low water vapor activities than the quaternary ammonium type, whereas the converse held for high water activities. The self-exchange of bromide ion in the sulfonium exchanger at 25 deg occurred with a self-diffsion coefficient of 1.18 x 10/sup -7/ sec/sup -1/, which value is notably smaller than the coefficient observed with a comparable quaternary ammonium type exchanger at the same temperature. Micro-quantities of Zn(II) and Fe(III) were strongly absorbed from hydrochloric acid and lithium chloride solutions, and this absorption increased with electrolyte concentration in a manner similar to that found with quaternary ammonium type anion exchangers. (auth)