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One-Step Production of 1,3-Butadiene from 2,3-Butanediol Dehydration

机译:2,3-丁二醇脱水一步法生产1,3-丁二烯

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摘要

We report the direct production of 1,3-butadiene from the dehydration of 2,3-butandiol by using alumina as catalyst. Under optimized kinetic reaction conditions, the production of methyl ethyl ketone and isobutyraldehyde, formed via the pinacol-pinacolone rearrangement, was markedly reduced and almost 80% selectivity to 1,3-butadiene and 1,3-butadiene could be achieved. The presence of water plays a critical role in the inhibition of oligomerization. The amphoteric nature of -Al2O3 was identified as important and this contributed to the improved catalytic selectivity when compared with other acidic catalysts.
机译:我们报告了通过使用氧化铝作为催化剂,由2,3-丁二醇的脱水直接生产1,3-丁二烯。在优化的动力学反应条件下,通过频哪醇-频哪酮重排形成的甲基乙基酮和异丁醛的生成显着降低,并且可以实现对1,3-丁二烯和1,3-丁二烯的几乎80%的选择性。水的存在在抑制低聚中起关键作用。 -Al2O3的两性性质被认为是重要的,与其他酸性催化剂相比,这有助于提高催化选择性。

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