Reactivation of arsenic-poisoned noble metal catalyst for removal of acetylene

摘要: A noble metal hydrogenation catalyst suited for removal of acetylene by hydrogenating the same selectively as when it is in presence ethylene from which to be removed, e.g., palladium, has been poisoned arsenic reactivated purging with an arsenic-free gas, containing together hydrogen, one embodiment at elevated temperature, until substantial occurring indication restoration activity and selectivity acetylene. The can then employed selective a gas ethylene.