Vapor-phase dehydration of 1,4-butanediol and 3-buten-1-ol to produce 1,3-butadiene was investigated over rare earth oxides such as Lu₂O₃, Yb₂O₃, Tm₂O₃, Er₂O₃, and Sc_1.0Yb_1.0O₃. In the dehydration of 3-buten-1-ol, heavy rare earth oxides such as Lu₂O₃, Yb₂O₃, and Er₂O₃ showed high catalytic performance for the selective formation of 1,3-butadiene with producing small amount of propylene whereas acidic catalysts such as alumina decomposed 3-buten-1-ol into propylene. In particular, over Yb₂O₃ calcined at 800 °C, 3-buten-1-ol was converted with a yield of 1,3-butadiene higher than 95% at 340 °C. In the dehydration of 1,4-butanediol, furthermore, we developed an efficient catalytic system: 1,3-butadiene was produced via an intermediate, 3-buten-1-ol, over Yb₂O₃ with an excellent yield of 96% at 360 °C and a high contact time of 2.26 h. Yb₂O₃ successfully inhibited the major side reaction such as decomposition of 3-buten-1-ol to propylene and provided the selective production of 1,3-butadiene from 1,4-butanediol.

研究了稀土氧化物如Lu ₂ O ₃，Yb ₂ O ₃，Tm ₂ O ₃，Er ₂上1,4-丁二醇和3-丁烯-1-醇的气相脱水生成1,3-丁二烯的过程。O ₃和Sc _1.0 Yb _1.0 O ₃。在3-丁烯-1-醇的脱水中，重稀土氧化物例如Lu ₂ O ₃，Yb ₂ O ₃和Er ₂ O _3。在选择性地形成1,3-丁二烯的过程中显示出高的催化性能，并产生少量的丙烯，而酸性催化剂（例如氧化铝）将3-buten-1-ol分解为丙烯。特别地，超过800℃下煅烧的Yb ₂ O ₃，转化了3-丁烯-1-醇，在340℃下1，3-丁二烯的产率高于95％。此外，在1,4-丁二醇的脱水中，我们开发了一种有效的催化体系：通过中间体3-buten-1-ol在Yb ₂ O ₃上生产1,3-丁二烯，产率高达96％在360°C和2.26 h的高接触时间下。Yb ₂ O ₃ 成功地抑制了主要的副反应，例如3-丁烯-1-醇分解为丙烯，并提供了由1,4-丁二醇选择性生产1,3-丁二烯的方法。