Although homogeneous catalytic systems have been central in ethylene oligomerization, the SiO₂-Al₂O₃-supported nickel phosphide (Ni₂P) catalyst was recently examined to be capable of transforming ethylene into higher olefins. Herein, better catalytic performance in ethylene oligomerization is achieved with Ni₂P/SiO₂ than Ni₂P/SiO₂-Al₂O₃ and Ni₂P/Al₂O₃. As a factor influencing ethylene oligomerization, the particle size of Ni₂P is the smallest over Ni₂P/SiO₂ due to strong metal-support interaction. While the oligomer productivity is affected by the density of Brønsted acid site present in the supported Ni₂P catalysts, Ni₂P/SiO₂ has a relatively high ratio of Brønsted to Lewis acid sites. Moreover, Ni₂P/SiO₂ is able to easily generate and transfer hydrogen species via the Brønsted acid P-OH groups, which would affect formation of nickel hydride species that is important in oligomerizing ethylene. Therefore, the above features of Ni₂P/SiO₂ are beneficial for ethylene oligomerization into higher olefins.

尽管均相催化体系一直是乙烯低聚的中心，但最近研究了SiO ₂ -Al ₂ O ₃负载的磷化镍（Ni ₂ P）催化剂能够将乙烯转化为高级烯烃。这里，在乙烯低聚更好的催化性能是用Ni达到₂ P /二氧化硅₂除Ni ₂ P /二氧化硅₂ -Al ₂ ö ₃和Ni ₂ P /的Al ₂ ö ₃。作为影响乙烯低聚的因素，Ni ₂ P的粒径比Ni ₂最小P / SiO ₂由于强烈的金属-载体相互作用而产生。尽管低聚物生产率受负载的Ni ₂ P催化剂中存在的布朗斯台德酸中心的密度的影响，但是Ni ₂ P / SiO ₂具有相对较高的布朗斯台德与路易斯酸中心的比率。此外，Ni ₂ P / SiO ₂能够通过布朗斯台德酸P-OH基团轻松生成和转移氢物种，这将影响氢化镍物种的形成，这对于乙烯的低聚非常重要。因此，Ni ₂ P / SiO ₂的上述特征对于乙烯低聚成高级烯烃是有利的。