3.9 Article

Synthesis and characterization of amine-functionalized supported phosphine catalysts and their application in ethylene oligomerization

Publisher

BUREAU SCIENTIFIC PUBL
DOI: 10.17159/0379-4350/2022/v76a02

Keywords

1-hexene 1-octene; ethylene oligomerization; phosphine ligands; silica; supported catalysts

Ask authors/readers for more resources

A series of phosphorus and nitrogen-based ethylene oligomerization ligands were reported, characterized, and tested for activity and selectivity towards 1-octene. The supported catalysts showed comparable activity to their homogeneous counterparts, with high selectivities to 1-octene in the C8 products.
A series of phosphorus and nitrogen-based ethylene oligomerization ligands of the type Ph2PN(X)PPh2 where X = i-propyl, n-butyl, ethylbenzene and cyclohexyl substituents are reported. These ligands were functionalized to enable tethering on amino-silica. The free ligands, amino-silica and the tethered ligands were characterized by BET, XRD, IR, TGA and NMR. The catalysts were tested for ethylene oligomerization using Cr(acac)(3) (acac = acetylacetonate) as the precursor and MMAO (modified methylaluminoxane) as the activator. The activity and selectivity of these catalysts to 1-octene was monitored at 45 bar ethylene in the temperature range of 45-100 degrees C. The activity of the supported catalysts was comparable to their homogeneous counterparts, surpassing them in some cases and selectivities to 1-octene in the C8 products were as high as 99 wt%. The steric effect of the substituent on the ligand as well as that of the support was found to influence the activity and product distribution.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

3.9
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available