The goal of ethylene oxide catalysis is to maximize the primary reaction (K1) while minimizing or eliminating the competing and consecutive reactions, K2 and K3. Shell Catalysts & Technologies has been reinventing ethylene oxide catalyst possibilities for more than 40 years, constantly and consistently improving their performance.

The scientists at Shell Catalysts & Technologies were not content with a HY catalyst that was a “better” HA catalyst. They have continued to work on improving HY catalysts to compete with the best performance of HS catalysts. We stand by our fourth catalyst family, the High Performance (HP) family of Ethylene Oxide catalysts.

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 the desired EO production level. Shell Catalysts & Technologies’ scientists have focused on improving not only the initial selectivity performance of our ethylene oxide catalysts but also the average catalyst selectivity throughout life.

Three Shell scientists work together on ethlyene oxide catalysts in a laboratory.

We prove our ethylene oxide catalysts expertise by producing over 50% of the world’s EO catalysts.

HP catalysts have initial selectivities approaching or in some cases equaling HS catalyst performance. HP catalysts feature the high stability of HA and HY catalysts, making them the longest-lived, highest selectivity catalysts available in the world. First demonstrated on a small scale in 2005, Shell Catalysts & Technologies’ HP catalyst family is now poised once again to recalibrate what defines a world-class Ethylene Oxide catalyst.

Petrochemical Technologies

EO/EG catalysts, production facility technology, C4/C5, hydrogenation units allow operators to further improve petrochemical plant efficiency and productivity