Akzo Nobel, Eka Chemicals, produces hydrogen peroxide in a large scale using the anthraquinone (AQ) autooxidation process. The key step is the highly selective liquid-phase hydrogenation of the AQs to their corresponding hydroquinones. For this step, a unique hydrogenation technology employing a monolithic catalyst has been developed and implemented. The present contribution outlines the development of this technology from the initial idea to implementation in industrial scale. Examples taken from Ekas patents in this area are used for illustrative purposes.