Method for preparation of homogenous catalyst for selective 1-hexene production

US11331655B2 · kind B2 · utility

Assignee

• SABIC GLOBAL TECHNOLOGIES B.V. · NL

Inventors

• Abdullah Saad Al-Dughaither · Riyadh, SA
• Shahid Azam · Riyadh, SA
• Abdulmajeed Mohammed Al-Hamdan · Riyadh, SA
• Dafer Mubarak Alshahrani · Riyadh, SA
• Sebastiano Licciulli · Riyadh, SA
• Anina Wöhl · Munich, DE
• Wolfgang Muller · Königsfeld, DE
• Heinz Bölt · Wolfratshausen, DE
• Andreas Meiswinkel · Munich, DE
• Tobias Meier · Dresden, DE
• Ralf Noack · Dresden, DE

Key dates

• Filing date: Dec 21, 2017
• Grant date: May 17, 2022
• Expiry date: Nov 17, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C11/107
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A method for preparing a homogenous catalyst for the production of linear alpha olefins includes: preparing a first pre-catalyst solution comprising a modifier and an organoaluminum compound in a first solvent wherein the first pre-catalyst solution is reacted and stored in a first vessel for a period of time of 1 hour to 90 days; preparing a second pre-catalyst solution comprising a second solvent, a ligand, and a chromium containing compound, wherein the second pre-catalyst solution is stored in a second vessel for a period of time of 1 hour to 90 days; and after a period of time, adding the first pre-catalyst solution to a catalyst pre-formation unit; after the same period of time, adding the second pre-catalyst solution to the catalyst pre-formation unit; forming a homogenous catalyst by mixing the first pre-catalyst solution and the second pre-catalyst solution; adding the homogeneous catalyst to a reaction vessel, wherein the reaction vessel comprises an alpha olefin; and forming the linear alpha olefin by mixing the homogeneous catalyst and the homogenous catalyst.