乙炔二聚合成乙烯基乙炔新催化体系研究

我国具有丰富的煤炭资源,一方面随着等离子体煤裂解制乙炔技术的不断成熟，乙炔的来源将更加清洁、廉价和丰富；另一方面目前乙炔主要用于生产聚氯乙烯,而聚氯乙烯市场逐渐饱和。因此，积极开发乙炔下游产品势在必行，乙烯基乙炔作为乙炔的下游产品，是一种重要的精细化工中间体。传统乙炔二聚反应过程是采用单一的Nieuwland催化剂来实现，存在单程转化率低、选择性差等问题。针对这一难题，本项目拟采用双金属协同催化乙炔二聚合成乙烯基乙炔,以Au、Pd、Cu等为主催化剂，Fe、Ni、Mn等为助催化剂，建立双金属催化体系，对乙烯基乙炔合成的反应机理进行研究，以提高单程转化率和选择性为目标，进行催化剂设计、反应条件的筛选和优化，并探索催化剂失活机制及其再生方法,降低催化剂成本，提高催化剂寿命，并在此基础上设计、搭建小型连续化反应装置,为该反应新催化体系的放大提供技术支撑。

There are abundant coal resources in china, with the successful breakthrough of plasma pyrolysis of coal to acetylene technology, the acetylene production ability will be furtherly improved, therefore, development of acetylene downstream products is very important. This project aims to develop the non-aqueous phase catalsyt for poly vinyl acetylene of acetylene dimerization to solve the Nieuwland catalyst in the reaction system of acetylene single traditional two polymerization process conversion rate is low, poor selectivity of this problem; Through investigating in the cuprous chloride as catalyst agent, other metal ions ( Fe2+, Ni2+, Pd2+, Mn2+ etc) for one-way bimetallic catalysts catalyst for acetylene non-aqueous system for two poly vinyl acetylene conversion rate and selectivity, screening and optimization of reaction conditions, and to study the synergistic catalytic reaction mechanism of double metal, improve the one-way two of acetylene polymerization conversion and selectivity. Based on this design, the use of small continuous reaction device, to accumulate data for the industrial production of the reaction.