Simultaneous production of propene and hydrogen from ethanol is a promising way of a renewable feedstock conversion into value-added products. Conventional reaction schemes of the direct one-step catalytic conversion of ethanol into propene include the reaction of the isopropanol dehydration to propene. However, the dehydration ability of a catalyst inevitably gives rise to the ethanol dehydration to ethene that diminishes the propene yield. To avoid ethanol dehydration to ethene, the two-step process is composed of the ethanol conversion to acetone in the first step and the acetone conversion to propene in the second step. The thermodynamic analysis of the known reaction pathways for the ethanol conversion to propene shows that a 74.6% yield of propene can be achieved even at a low temperature of 200 °C. According to the literature data, possible catalysts can be Cu/La₂Zr₂O₇ or Fe₃O₄ for the first step, and the mixed Ag–In/SiO₂ and K₃PW₁₂O₄₀ catalyst for the second step. We speculate that the propene yield may reach 72% using these catalysts in the two-step process.

从乙醇中同时生产丙烯和氢气是将可再生原料转化为增值产品的一种很有前景的方法。乙醇直接一步催化转化为丙烯的常规反应方案包括异丙醇脱水反应为丙烯。然而，催化剂的脱水能力不可避免地导致乙醇脱水成乙烯，从而降低丙烯产率。为避免乙醇脱水成乙烯，两步法由第一步乙醇转化为丙酮和第二步丙酮转化为丙烯组成。乙醇转化为丙烯的已知反应途径的热力学分析表明，即使在 200 °C 的低温下也可以实现 74.6% 的丙烯产率。根据文献资料，₂ Zr ₂ O ₇或Fe ₃ O ₄用于第一步，混合Ag-In/SiO ₂和K ₃ PW ₁₂ O ₄₀催化剂用于第二步。我们推测，在两步法中使用这些催化剂，丙烯产率可能达到 72%。