环戊二烯催化甲基化制备甲基环戊二烯催化剂筛选及制备条件的研究

Research on Screening and Preparing of Catalyst Used for Catalystic Methylation of Cyclopentadiene to Prepare Methylcyclopentadiene

从反应系统的特点考虑，选定了几种具有不同酸碱特性的金属氧化物进行复配处理，在一定条件下进行相应的催化活性试验，并利用正交试验，确定了制备催化剂的最佳工艺条件。结果表明：以９５％及无水乙醇混合制备的Ａｌ２Ｏ３ＭｇＯＫ２ＣＯ３三组分催化剂具有适合的酸、碱中心，是环戊二烯与甲醇催化甲基化合适的催化剂。这种催化剂制备最佳工艺条件为：摩尔比３∶２∶１，焙烧温度７００℃，焙烧时间６ｈ。

In this artical, considering the characteristic of reaction system ,we select some metal-oxids which have different acid-base properties to make up, and test their catalystic activities in a define condition. According to the orthographical design, the best production conditions prepared the catalyst were determinded. It's shown that the catalyst prepared from Al 2O 3 with supported MgO and K 2CO 3 mixed in 95% or 100% ethyl alcohol has suitable acid-base center, and it is the suitable catalyst to methylation of cyclopentadiene and methanol. The best production conditions prepared the catalyst were: the mole proportion of catalystic components is Al 2O 3∶MgO∶K 2CO 3=3∶2∶1, the calcining termperature is 700℃,calcining time is 6h.