To study the influence of bimetallic characteristics on activity and selectivity, SiO₂-supported CoP, FeP, monometallic MoP and bimetallic MoCoP/MoFeP phosphides (Mo_xCo_1-xP and Mo_xFe_1-xP (x = 0.5)) were investigated for the deoxygenation of methyl laurate to C₁₁-C₁₂ hydrocarbons. Here, we aimed to modulate the catalytic properties using different metal compositions with equimolar amounts of total metal phosphide. The catalysts were characterized by X-ray diffraction, N₂ adsorption-desorption at -196 °C, transmission electron microscopy, CO chemisorption, NH₃ temperature-programmed desorption and X-ray photoelectron spectroscopy; the conversion of methyl laurate, selectivity for hydrocarbons and C₁₁/C₁₂ ratio were related to the composition and physicochemical properties of the catalysts. The conversion (maximum of 85% for MoP and minimum of 8% for FeP) is mainly influenced by phosphide dispersion, which, in turn, is associated with acidity, and the same trend was found for both parameters (MoP > MoCoP > MoFeP > FeP > CoP). The yield of hydrocarbon formation follows the trend MoP > MoCoP > CoP > MoFeP > FeP, with synergy between Mo and Co in the MoCoP catalyst. The C₁₁/C₁₂ ratio is influenced by the metal phosphide nature; the results indicate that Mo-based catalysts favor a hydrogenation (dehydration) pathway (C₁₂ selectivity, 91% in MoP/SiO₂) and that Co-based catalysts favor oxygen elimination by decarbonylation/decarboxylation (C₁₁ selectivity 75% in CoP/SiO₂). The activity results show synergy between Mo and Co in bimetallic phosphides by a kind of interaction that yields an enhancement in the catalytic activity of the MoCoP/SiO₂ catalyst with respect to the sum of contributions from individual MoP/SiO₂ and CoP/SiO₂.

为了研究双金属特性对活性和选择性的影响，SiO ₂负载的CoP，FeP，单金属MoP和双金属MoCoP / MoFeP磷化物（Mo _x Co _1-x P和Mo _x Fe _1-x P（x = 0.5））研究了月桂酸甲酯脱氧为C ₁₁ -C ₁₂烃的方法。在此，我们旨在使用等摩尔量的总金属磷化物使用不同的金属成分来调节催化性能。通过X射线衍射，-196°C下N ₂吸附-解吸，透射电子显微镜，CO化学吸附，NH ₃表征催化剂。程序升温解吸和X射线光电子能谱；月桂酸甲酯的转化率，碳氢化合物的选择性和C ₁₁ / C _12的比例与催化剂的组成和理化性质有关。转化率（MoP的最大值为85％，FeP的最小值为8％）主要受磷化物分散度的影响，而磷化物的分散度又与酸度有关，并且在两个参数（MoP> MoCoP> MoFeP> FeP> CoP）。烃形成的产率遵循MoP> MoCoP> CoP> MoFeP> FeP的趋势，在MoCoP催化剂中Mo和Co之间具有协同作用。C ₁₁ / C ₁₂比例受金属磷化物性质的影响；结果表明，Mo基催化剂有利于加氢（脱水）途径（C ₁₂选择性，在MoP / SiO _2中为91％），Co基催化剂有利于通过脱羰/脱羧的方式除氧（C ₁₁选择性为CoP / 75％） SiO ₂）。活性结果表明，通过一种相互作用，Mo和Co在双金属磷化物中具有协同作用，相对于单个MoP / SiO ₂和CoP / SiO ₂的贡献总和，MoCoP / SiO ₂催化剂的催化活性得到增强。