乙烷裂解生成乙烯, C 2 H 6 (g)=C 2 H 4 (g)+H 2 (g) 。在实际生产中常在恒温恒压下采用加入过量水蒸气的方法来提高乙烯的产率,这是因为 H 2 O(g) 的加入,同时以相同倍数降低了 p (C 2 H 6 ) 、 p (C 2 H 4 ) 、 p (H 2 ) ,使向右移动。
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