Engineered Zeolites and Their Use in Continuous Regioselective Chlorination

这是一项具有亲橄榄核和亲橄榄壳的沸石(铝硅酸盐)晶体的研究，并使用这种材料来促进较高碳氢化合物的末端光化学氯化。建立了合成条件和反应器设计，以生产表面高铝而核心不含铝的沸石。前人的研究结果表明，在长链碳氢化合物的光氯化反应中，这种材料对末端甲基有很强的区域选择性。探讨了这一效应的机理和范围。为了利用这一现象，正在设计和建造一个沸腾床氯化系统。这项工作表明，基于连续区域选择性光氯化过程的技术是可行的。这将使新的(或更有效地合成旧的)部分用于表面活性剂、聚合物、润滑剂、纺织品整理剂、阻燃剂和其他材料。

This is an investigation of zeolite (aluminosilicate) crystals with oliophilic cores and oliophobic shells and the use of such materials to promote terminal photochemical chlorination of higher hydrocarbons. Synthesis conditions and reactor designs are established to produce zeolites with surfaces high in aluminum and cores devoid of aluminum. Previous results show that such materials produce strong regioselectivity for the terminal methly group in photochlorination of long-chain hydrocarbons. The mechanism and scope of this effect is probed. A fluidized-bed chlorination system to exploit this phenomenon is being designed and built. This work suggests that a technology based on continuous regioselective photochlorination processes is feasible. This would make available new (or more efficient synthesis of old) moieties for surfactants, polymers, lubricants, textile finishes, flame retardants, and other materials.