SK Innovation has patented a method for producing a heterogeneous nickel-based oligomerization catalyst. This catalyst features single-atom nickel supported on an Al-mesoporous silicate, enabling efficient oligomerization of light olefins, particularly C4 olefins, through a specific ion exchange and heat treatment process. GlobalData’s report on SK Innovation gives a 360-degree view of the company including its patenting strategy. Buy the report here.
According to GlobalData’s company profile on SK Innovation, Battery management systems was a key innovation area identified from patents. SK Innovation's grant share as of June 2024 was 34%. Grant share is based on the ratio of number of grants to total number of patents.
Heterogeneous nickel-based catalyst for light olefin oligomerization
The patent US12042787B2 outlines a method for producing a heterogeneous oligomerization catalyst utilizing a Na-type Al-mesoporous silicate as a support. The process begins with the provision of a silicate that has a Si/Al atomic ratio between 5 and 20, where aluminum creates acid sites and sodium ions are bound to these sites. The method involves ion exchanging the sodium ions with nickel ions from a nickel compound with a +2 oxidation state, ensuring that at least 95% of the sodium ions are replaced. Following this, the catalyst undergoes heat treatment, resulting in nickel being supported as single atoms on the silicate. The final catalyst contains nickel in a weight range of 0.1% to 10%, with an acid amount of less than 50 µmol/g and a nickel-to-aluminum molar ratio between 0.3 and 1.
Additional specifications of the method include the use of specific types of Al-mesoporous silicates, such as AlMCM-48 or AlMCM-41, which should have a specific surface area of 200 to 1200 m²/g, a pore volume of 0.3 to 0.6 cc/g, and an average pore diameter of 18 to 40 Å. The ion exchange process can be conducted at temperatures ranging from 50°C to 100°C, while the heat treatment occurs at temperatures between 250°C and 1000°C in an oxygen-containing atmosphere. The resulting oligomerization catalyst is characterized by a specific surface area of 150 to 1000 m²/g, a pore volume of 0.2 to 0.5 cc/g, and an average pore diameter of 10 to 35 Å, with a particle size ranging from 1 to 500 µm. Notably, the catalyst is designed to be substantially free of nickel oxide (NiO).
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