Exchanging low amounts of palladium with excess copper in a heterogeneous zeolite Y catalyst leads to high Wacker activity and mitigates activity loss by reducing the extent of palladium sintering. Employing periodic regenerative treatments in oxygen to remove carbon deposits and reoxidize palladium results in the partial (but reversible) recovery of the high initial activity.

中文翻译：

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乙烯氧化的非均相Pd-Cu /沸石Y Wacker催化剂的优化。

在多相沸石Y催化剂中用过量的铜交换少量的钯会导致瓦克活性高，并通过减少钯的烧结程度来减轻活性损失。在氧气中进行定期再生处理以去除碳沉积物并使钯重新氧化会导致高初始活性的部分（但可逆）恢复。