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Solvent free synthesis of Dibenzyl Sulfide using H2S rich Monoethanolamine under two phase transfer catalysis

机译:两相转移催化下富H2S的单乙醇胺无溶剂合成二苄基硫醚。

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摘要

With the depletion of crude oil reserves, oil refineries are being forced to process sour crude which is high in sulfur content. Sulfur, if not removed from the system may corrode the system or may lead to unwanted side reactions which would entail consumption of reactants and energy. Usually the sulfur is removed by absorption in ammonia solution which is further processed in a Claus Unit to produce elemental sulfur which requires a high amount of energy. Also, the supply of elemental sulfur usually outstrips demand thereby eroding the profit margins. With a view to making more sophisticated fine chemicals which have higher usability and better market value, this project was undertaken to study the kinetics of the solvent-free synthesis of dibenzyl sulfide was carried out using H2S-rich monoethanolamine under two phase transfer catalysis with a phase transfer catalyst (PTC), polyethylene glycol (PEG). The effects of different parameters, such as speed of agitation, temperature, monoethanolamine concentration, catalyst concentration, initial sulfide concentration and concentration of benzyl chloride, on the conversion and reaction rate of benzyl chloride were studied to establish the mechanism of the reaction.
机译:随着原油储备的枯竭,炼油厂被迫加工硫含量高的含硫原油。硫如果不从系统中除去,可能会腐蚀系统或导致有害的副反应,这将消耗反应物和能量。通常,通过吸收氨溶液除去硫,然后在克劳斯装置中对其进行进一步处理,以产生需要大量能量的元素硫。而且,元素硫的供应通常超过需求,从而侵蚀了利润空间。为了生产具有更高可用性和更好市场价值的更复杂的精细化学品,该项目旨在研究使用富H2S的单乙醇胺在两相转移催化下进行无溶剂合成二苄基硫醚的动力学。相转移催化剂(PTC),聚乙二醇(PEG)。研究了搅拌速度,温度,单乙醇胺浓度,催化剂浓度,初始硫化物浓度和苄基氯的浓度等不同参数对苄基氯的转化率和反应速率的影响,从而建立了反应机理。

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    Panda Partha Pratim;

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  • 年度 2012
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