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Method for preparing surface modified IIB metal oxide hydrogenation catalyst

A hydrogenation catalyst and surface modification technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, catalyst activation/preparation, physical/chemical process catalyst, etc., can solve the problem of improving the interaction between active metal and support , It is not conducive to the uniform dispersion of zinc salt, and the hydrogenation performance of the catalyst is unfavorable, so as to achieve the effects of low production cost, easy operation and increased selectivity

Active Publication Date: 2008-01-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, there is a calcination process with higher temperature and longer time before the introduction of active metal after the introduction of zinc. Although calcination can fix the zinc oxide, it is not conducive to improving the interaction between the active metal and the support. Hydrogen performance is bad
In addition, the above method ① adding zinc salt and kneading is not conducive to the uniform dispersion of zinc salt, and the profit rate of zinc salt is low; method ② adds a roasting step, the preparation process is long, and the energy consumption is high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] Catalyst A1 of the present invention is a medium oil hydrocracking catalyst used in the hydrocracking process. The final chemical composition of the catalyst (the oxide content of each element, the same below): 9w% nickel oxide, 26w% tungsten oxide, 1.5w% zinc oxide, 23.5w% silicon oxide, and the balance of aluminum oxide.

[0024] Carrier preparation: First, 27.7g of small-pore alumina (specific surface 260m 2 / g, pore volume 0.45ml / g) into 71g of water, after stirring to become a uniform slurry, add 1.3g of nitric acid, continue to stir until it becomes jelly, to obtain the adhesive. Take by weighing a kind of amorphous silicon aluminum 51.5g (SiO 2 Content 45%, specific surface 450m 2 / g, pore volume 1.1ml / g), a modified Y zeolite (its SiO 2 / Al2 o 3 Molar ratio 14.5, infrared acidity 0.28mmol / g) 11.8g, after mixing, add the above binder and roll into a ball, put it in an extruder, extrude it, dry it at 110°C for 8 hours, and bake it at 500°C 3 hours to prepare ...

example 2

[0031] The catalyst B of the present invention is used as a hydrorefining catalyst for high-sulfur coking and catalytic diesel hydrodesulfurization process. The final chemical composition of the catalyst: 2.5w% of cobalt oxide, 14w% of tungsten oxide, 5w% of zinc oxide, and the balance of aluminum oxide.

[0032] Carrier preparation: first, 41.7g of small-pore alumina (specific surface 260m 2 / g, pore volume 0.45ml / g) was added in 142.3g of water, stirred to become a uniform slurry, added 3.5g of nitric acid, and continued to stir until it became jelly, to obtain an adhesive. Take by weighing a kind of macroporous alumina 33.6g (specific surface 440m 2 / g, pore volume 1.0ml / g), a small pore alumina 34.7g (specific surface 260m 2 / g, pore volume 0.45ml / g), after mixing, add the above binder and roll into a ball, put it in an extruder, extrude it, dry it at 110°C for 8 hours, and bake it at 500°C for 2h. carrier.

[0033] Preparation of impregnating solution: Firstly, 18.5g ...

example 3

[0039] Catalyst C of the present invention is a lubricating oil hydrotreating catalyst used in the hydrotreating process of producing lubricating oil base oil from paraffin base oil. The final chemical composition of the catalyst: 4.5w% of nickel oxide, 24w% of molybdenum oxide, 9w% of zinc oxide, 8w% of titanium oxide, and the balance of aluminum oxide.

[0040] Carrier preparation: first, 27.8g small-pore alumina (specific surface 260m 2 / g, pore volume 0.45ml / g) was added in 114.5g water, after stirring to become a uniform slurry, 3.8g nitric acid was added, and the stirring was continued until it became jelly to obtain an adhesive. Take by weighing a kind of titanium modified aluminum oxide 55.4g (containing titanium oxide 15m%, specific surface 360m 2 / g, pore volume 0.78ml / g) after adding the above-mentioned binder and rolling into a ball, put it into an extruder and extrude it, dry it at 110°C for 8 hours, and bake it at 500°C for 2 hours to obtain the carrier.

[004...

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PUM

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Abstract

The invention relates to a method for preparing a hydrogenation catalyst which can change the property of the surface of IIB group metallic oxide. The invention adds the zinc via immersion method, and the carrier is avoided high temperature sintering process after the immersion with zinc solution and dried, and before loading the hydrogenation active metal. Compared to present technique, the invention avoids the high temperature process after adding zinc element and before adding hydrogenation metal, to decrease the reciprocity between the zinc and carrier, which avails the regulation on the reciprocity between hydrogenation metal and carrier. In addition, the inventive method has simple process, lower power consumption, easy operation and lower producing cost. The invention can be used in the reaction of hydrogenation refining, and hydrogenation cracking of hydrocarbon, which has higher activity and selectivity than present catalyst.

Description

technical field [0001] The invention belongs to the technical field of hydrogenation catalyst preparation, and in particular relates to a preparation method of a multi-component composite oxide-supported hydrogenation catalyst surface-modified by group IIB metal oxides. Background technique [0002] Due to the increasingly heavy and poor quality of petroleum raw materials, the hydrogenation process has become one of the important means of upgrading heavy oil to improve product quality. Hydrogenation catalysts include hydrofining and hydrocracking catalysts. The former is mainly used for hydrodesulfurization, hydrodenitrogenation, and hydrodemetallization of petroleum hydrocarbon materials in order to reduce or remove impurities in petroleum hydrocarbon materials to improve product quality. The latter is a dual-function catalyst with hydrogenation performance and cracking performance, which has become an important oil processing method for lightening heavy oil and obtaining c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J37/02B01J23/84B01J23/89C01G45/08C01G45/10
Inventor 陈松张晓萍谷明镝
Owner CHINA PETROLEUM & CHEM CORP
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