为提高芳香族硝基化合物氢化催化剂的性能，在单铜催化剂中引入稀土元素。
Rare earths were introduced into mono-copper catalyst to improve the performance of hydrogenation catalyst for aromatic nitro-compounds.
为提高芳香族硝基化合物氢化催化剂的性能，在单铜催化剂中引入稀土元素。
Rare earths were introduced into mono-copper catalyst to improve the performance of hydrogenation catalyst for aromatic nitro-compounds.
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