CATALYST FOR PRODUCING SYNTHETIC BASE OILS DURING OLIGOMERISATION OF DECENE-1 AND METHOD FOR PRODUCTION THEREOF Russian patent published in 2015 - IPC B01J23/26 B01J23/10 B01J21/06 B01J29/89 B01J37/02 C10G50/02 C07C2/08 

FIELD: chemistry.

SUBSTANCE: catalyst for producing synthetic base oils during oligomerisation of decene-1 contains chromium oxide as an active component and, as a support, silica gel and zirconium oxide or cerium oxide, with the following ratio of components, wt %: chromium oxide 1-3, support - the balance. The catalyst is obtained by preparing a support by impregnating silica gel with particle size of 0.2-0.4 mm with an aqueous solution of zirconium oxonitrate ZrO(NO₃)₂·6H₂O or cerium nitrate Ce(NO₃)₃·6H₂O, drying at room temperature for 2-2.5 hours and then at 100-110°C for 15-30 minutes and calcining in an air current at 500-550°C for 4.5-5 hours. Chromium is deposited on the obtained support by impregnating with an organic solution a chromium salt. The catalyst is dried at room temperature for 2-3 hours and then at 120-130°C for 2-2.5 hours. The obtained support is characterised by a high specific surface area of 700-723 m²/g and pore volume of 2.1 cm³/g.

EFFECT: invention provides high catalytic activity and service life of the catalyst, significantly improves the quality of the obtained synthetic base oil with a high viscosity index and low chilling point.

2 cl, 1 tbl, 9 ex