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铑催化剂是一种众所周知的由合成气制取C_2氧化物,例如:乙醇、乙醛、乙二醇的优良催化剂。若将其他金属离子添加到铑催化剂中,则对其活性与选择性影响很大。例如,这些年来,对载在铑催化剂上的锰、铁、钠的作用进行了广泛的研究。载体的效应也已经研究。据报道,负载在La_2O_2、Na_2O_3或ZrO_2上的铑催化剂,常压下选择性地从合成气生成乙醇,但其活性仍然很低。旨在选择性地合成醋酸的研究,目前仍廖廖无几。
Rhodium catalyst is a well-known catalyst for the synthesis of C 2 oxides from syngas, such as ethanol, acetaldehyde and ethylene glycol. If other metal ions added to the rhodium catalyst, its activity and selectivity have a great influence. For example, the role of manganese, iron, sodium on rhodium catalysts has been extensively studied over the years. The effect of the vector has also been studied. It has been reported that rhodium catalysts supported on La 2 O 2, Na 2 O 3 or ZrO 2 selectively generate ethanol from syngas at atmospheric pressure but their activity is still low. The research aimed at the selective synthesis of acetic acid is still far from satisfactory.