Monitoring the linear alkylbenzene sulfonation process using high-temperature gas chromatography
Monitoring the linear alkylbenzene sulfonation process using high-temperature gas chromatography
复制标题
使用高温气相色谱法监测直链烷基苯磺化过程
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
K. Molever
中科院分区：
文献类型：
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作者：
K. Molever
控制烷基苯磺酸盐线性磺化过程是烷基苯磺酸盐生产过程中的关键环节；该过程可以通过测定LAS含量、未磺化线性烷基苯（LAB）和LAB砜来监测。传统上，测定LAB和LAB砜的含量是费时且不直接的。本文描述了一种简单快速的分离和同时毛细管气相色谱（GC）定量LAS中LAB和LAB砜的方法。该过程包括将未磺化的LAB和LAB砜萃取成正庚烷；线性烷基苯磺酸钠或线性烷基苯磺酸钠（反应生成线性烷基苯磺酸钠）留在水萃取溶剂层中。使用特殊金属毛细管柱的高温毛细管气相色谱可以对LAB和高分子量LAB砜进行定量。
Controlling the linear alkylbenzene sulfonate (LAS) sulfonation process is a critical part of the LAS manufacturing process; this process can be monitored by assaying for LAS content, unsulfonated linear alkylbenzene (LAB), and LAB sulfones. Traditionally, assaying the LAB and LAB sulfone contents has been time consuming and not straightforward. A simple and rapid procedure is described for the isolation and simultaneous capillary gas chromatographic (GC) quantification of LAB and LAB sulfones in LAS. The procedure involves extraction of the unsulfonated LAB and the LAB sulfones into n-heptane; sodium linear alkylbenzenesulfonate or linear alkylbenzenesulfonic acid (reacted to form sodium linear alkylbenzenesulfonate) remains in the aqueous extraction solvent layer. High-temperature capillary GC using a specialty metal capillary column enables both LAB and high molecular weight LAB sulfones to be quantified.