论文部分内容阅读
吡啶和氨常被用作探针分子来表征酸性催化剂的酸性,这对酸碱催化反应的研究及有关催化剂的制备是很有意义的。我们用量热及红外相结合的方法研究了吡啶、氨和苯在超稳Y型沸石(USY)上的吸附,对USY沸石的酸性进行了表征,并试图从分子结构和酸中心性质上来解释它们的吸附热及其碱性之间的关系。
Pyridine and ammonia are often used as probe molecules to characterize the acidity of acid catalysts. This is of great significance for the study of acid-base catalysis and the preparation of catalysts. We investigated the adsorption of pyridine, ammonia and benzene on ultra-stable Y-type zeolite (USY) by the combination of calorimetry and infrared spectroscopy. The acidity of USY zeolite was characterized and tried to explain their molecular structure and acid center properties The relationship between the heat of adsorption and its alkalinity.