Ethene homologation reaction to give propene (3C₂H₄ → 2C₃H₆) was examined on reduced molybdena silica (MoO₃/SiO₂) catalyst at initial ethene pressure around 14.66 kPa (110 mmHg) and a temperature of 30 °C. In the very first stage of the ethene homologation reaction, induction period was observed as well as previous results reported in the references. During the induction period, ethene dimerization providing 1-butene was preferentially occurred. In addition, it was indicated that isomerization of 1-butene to 2-butene was retarded by the presence of excess ethene as a raw material. Therefore, it might be considered that the induction period of the ethene homologation reaction on the reduced MoO₃/SiO₂ catalyst might be caused by insufficiency of 2-butene to promote reverse propene metathesis (CH₂=CH₂+CH₃-CH=CH-CH₃ → 2CH₂=CH-CH₃).

在还原的氧化钼二氧化硅（MoO ₃ / SiO ₂）上检测了乙烯的同源反应，得到丙烯（3C ₂ H ₄  →2C ₃ H ₆）乙烯催化剂的初始乙烯压力约为14.66 kPa（110 mmHg），温度为30°C。在乙烯同源反应的第一阶段，观察到诱导期以及参考文献中报道的先前结果。在诱导期间，优先发生提供1-丁烯的乙烯二聚。另外，表明存在过量的乙烯作为原料，阻碍了1-丁烯向2-丁烯的异构化。因此，可以认为还原的MoO ₃ / SiO ₂催化剂上的乙烯同系反应的诱导期可能是由于2-丁烯不足以促进反向丙烯复分解（CH ₂ = CH ₂ + CH ₃ -CH = CH-CH₃  →2CH ₂ = CH-CH ₃）。