A catalyst composition for use in dimerizing, co-dimerizing or oligomerizing olefins comprises:at least one zero-valent nickel complex;at least one acid with formula H+X\u2212 in which X\u2212 represents an anion;and at least one ionic liquid with general formula Q+ A\u2212 in which A\u2212 is an anion identical to or different from X\u2212. The device includes a base portion, the base portion including a base having a first and a second side and a front and a back. Management of the related set of data is assigned, by a set of services, to a service within the distributed set of services based on an optimization criteria.