deactivated catalyst

例句：

1. 1. The process of deactivating a catalyst is crucial for the reaction to proceed smoothly.
   失活催化剂的过程对于反应顺利进行至关重要。
2. 2. The inactivation of the catalyst was due to the high temperature and pressure conditions during the reaction.
   催化剂的失活是由于反应过程中的高温度和压力条件造成的。
3. 3. The researchers found that the deactivation of the catalyst could be attributed to the chemicalreactions occurring within the reactor.
   研究人员发现，催化剂的失活可以归因于反应器内发生的化学反应。