Hydrogenation catalysts carrier with nickel and cobalt, hydro-catalyst and its preparing method

Abstract

The invention provides a carrier of pre-impregnating metal components, and hydrotreating catalyst containing the carrier, wherein carrier materials are Al 2 O 3, SiO 2, TiO 2, and a composite oxide of two of the Al 2 O 3, the SiO 2, and the TiO 2 which are prepared by a sol-gel method, a certain amount of molecular sieve is added into the carrier, saline solution containing nickel and cobalt is inducted in the process of the carrier materials prepared by a sol method, in order that the content of NiO and CoO in the carrier is 0.1 to 5 wt percent, the specific surface area of the obtained carrier containing the nickel or the cobalt is in 250 to 400 m <2> * g <-1>, and the pore volume is in 0.5 to 1.0 ml * g <-1>. The invention also provides a preparation method for the catalyst, group 6B metals and group 8 metals are taken as active components, the adoption of an equivalent-volumetric impregnation method produces the petroleum fraction hydrotreating catalyst, and the catalyst of the invention has excellent activity of hydrogen desulfurization and hydrodenitrification.

Description

technical field [0001] The invention provides a hydrogenation catalyst carrier in which nickel or cobalt is pre-impregnated, a catalyst containing the pre-impregnated nickel or cobalt carrier and a preparation method thereof. Specifically, in the process of sol-gel preparation of the support, a part of the metal active component nickel or cobalt of the catalyst is introduced into the support preparation system to form a new type of pre-impregnated nickel or cobalt support, which changes the The existence state of the metal component nickel or cobalt in the carrier improves the interaction between the carrier and other metal components, improves the dispersibility and vulcanization performance of the metal component, and thus produces the pre-impregnated nickel or cobalt. The hydrogenation catalyst of the carrier, the hydrogenation catalyst of the present invention has very good hydrodesulfurization and hydrodenitrogenation properties for petroleum fractions. Background techn...

AI Technical Summary

Problems solved by technology

However, due to the inevitable interaction of alumina and nickel atoms in the preparation process of the catalyst, a low-activity nickel-aluminum spinel structure is formed, which is not conducive to the full play of the hydrogenation activity of the metal active component on the catalyst; and because The introduction method of titanium element causes the content of titanium oxide in the catalyst to not be very high, and cannot give full play to the role of titanium oxide in the hydrogenation catalyst

[0008] The common feature of the above-mentioned catalyst preparation methods is the introduction of inactive metal components in the carrier or catalyst. The corresponding problem brought by this type of preparation method is to increase the amount of metal components or reduce the specific surface area and pore volume of the catalyst.