Method for preparation of a catalyst solution for selective 1-hexene production

A method for preparing a homogenous catalyst for use in preparing a linear alpha olefin, comprising:

• preparing a first pre-catalyst solution by mixing a chromium source and a ligand in a first solvent, wherein the first pre-catalyst solution is stored in a first vessel;
• preparing a second pre-catalyst solution by mixing an organoaluminum compound and a modifier in a second solvent, wherein the second pre-catalyst solution is stored in a second vessel;
• and
• either simultaneously feeding the first pre-catalyst solution and the second pre-catalyst solution directly into a reaction vessel, wherein the reaction vessel includes a third solvent;
• or simultaneously feeding the first pre-catalyst solution and the second pre-catalyst solution directly into a hydrocarbon solvent feed upstream from a reaction vessel.