Ethylene Oxide is formed by reacting ethylene with oxygen over an Ethylene Oxide catalyst. The main competing reaction is the combustion of ethylene to CO2 and water. There is also a consecutive combustion reaction where Ethylene Oxide further reacts to the combustion products (see reaction figure - right, top).
The goal of Ethylene Oxide catalysis is to maximise the primary reaction (K1) while minimising or eliminating the competing and consecutive reactions, K2 and K3. CRI has been working in the area of Ethylene Oxide catalysis for more than 40 years, constantly and consistently improving catalyst performance.
The most important measure of Ethylene Oxide catalyst performance is selectivity-defined as the molar yield of Ethylene Oxide produced per molar quantity of ethylene reacted. Another important parameter is activity, the catalyst temperature required to achieve a desired Ethylene Oxide production level. CRI’s scientists have focused on improving not only the initial selectivity performance of our Ethylene Oxide catalysts, but also the average catalyst selectivity throughout life.
CRI’s long-term success is built on a series of revolutionary scientific breakthroughs that have defined Ethylene Oxide catalysis for over 40 years. CRI currently offers Ethylene Oxide catalysts in four different families (see graph - right, bottom), all of which were first invented by CRI, clearly marking CRI as the world’s undisputed Ethylene Oxide catalyst technology leader.
CRI remains active in developing, testing, demonstrating, and marketing future generations of industry-leading catalysts. Our goal remains the same as it has always been - to be the undisputed leader in providing superior Ethylene Oxide catalyst products to the global Ethylene Oxideindustry.