Nickel-aluminum oxide, and preparation method and application thereof

A nickel-aluminum oxide, alumina technology, applied in chemical instruments and methods, chemical/physical processes, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of inappropriate pore structure and hinder the development of catalytic cracking catalysts , uneven distribution of pores and other problems, to achieve the effect of reducing damage and strong resistance to heavy metal pollution

Inactive Publication Date: 2016-04-06
ZIBO KANGNENGDA RARE EARTH MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing aluminum-based substrates also have many defects, such as inappropriate pore structure, uneven pore distribution, and poor resistance to heavy metal pollution, etc., which hinder the further development of catalytic cracking catalysts.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] In the nickel-aluminum oxide, the content of each component is as follows: 20% of aluminum oxide, and the rest is nickel oxide. The amount of nickel aluminum oxide accounts for 2% of the mass of the catalytic cracking catalyst.

[0021] The preparation method of nickel-aluminum oxide is as follows: take 1L of sodium metaaluminate solution with a concentration of 100g / L, add 250 grams of Ni(NO 3 ) 2 .6H 2 O, stir well, then add 10 grams of cellulose, keep the temperature at 80°C for 25 hours, separate the precipitate, wash with water, dry, and calcinate at 500°C for 1 hour to obtain about 50 grams of nickel-aluminum oxide. The pore diameter of nickel aluminum oxide is 45.7nm, and the specific surface area is 390m 2 / g.

Embodiment 2

[0023] In the nickel-aluminum oxide, the content of each component is as follows: 30% of aluminum oxide, and the rest is nickel oxide. The amount of nickel aluminum oxide accounts for 5% of the mass of the catalytic cracking catalyst.

[0024] The preparation method of nickel-aluminum oxide is as follows: take 1L concentration and be the sodium metaaluminate solution of 150g / L, add 360 grams Ni (NO 3 ) 2 .6H 2 O, stir well, then add 5 grams of starch, keep the temperature at 60°C for 10 hours, separate the precipitate, wash with water, dry, and calcinate at 500°C for 1 hour to obtain about 70 grams of nickel-aluminum oxide. The pore diameter of nickel aluminum oxide is 42.5nm, and the specific surface area is 378m 2 / g.

Embodiment 3

[0026] In the nickel-aluminum oxide, the content of each component is as follows: 40% of aluminum oxide, and the rest is nickel oxide. The amount of nickel aluminum oxide accounts for 4% of the mass of the catalytic cracking catalyst.

[0027] The preparation method of nickel-aluminum oxide is as follows: Weigh 1L of sodium metaaluminate solution with a concentration of 150g / L, add 100g of NiO to it and stir thoroughly, then add 8g of starch, keep the temperature at 80°C for 10 hours, and remove the precipitate Separated, washed with water, dried, and calcined at 400° C. for 2 hours to obtain about 80 grams of nickel-aluminum oxide. The pore diameter of nickel aluminum oxide is 42.9nm, and the specific surface area is 383m 2 / g.

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Abstract

The present invention relates to a catalyst additive, and in particular to a nickel-aluminum oxide and preparation method and application thereof. The nickel-aluminum oxide is used for preparing a catalytic cracking catalyst, and comprises the following components by weight: 20-90% of alumina and the balance of nickel oxide. The preparation method is as below: adding a Ni-containing compound into a sodium aluminate solution, stirring evenly, then adding a pore-forming agent, conducting constant temperature aging to form a precipitate, and then finally separating, washing, drying and calcining the precipitate. The nickel-aluminum oxide has a suitable pore structure and pore distribution, and larger surface area, which is conducive to the spread and pre-cracking of heavy oil molecules; the nickel-aluminum oxide also has suitable acid strength, acid site and acid distribution, and strong resistance to heavy metal pollution, and can act with heavy metal elements to form stable compounds, thereby reducing the destruction of the heavy metal elements on the active components.

Description

technical field [0001] The invention relates to catalyst additives, in particular to a nickel-aluminum oxide and its preparation method and application. Background technique [0002] In today's oil refining industry, catalytic cracking raw oil is becoming increasingly heavy and inferior. At the same time, in order to pursue high profits and constantly require high value-added product yields in catalytic devices, the advancement of catalyst technology has become the key to the advancement of refining technology. Cracking catalysts are required It has higher heavy oil cracking performance and excellent coke selectivity, and the product distribution can be flexible according to the market demand, so as to meet the market demand to the greatest extent. In addition, environmental protection regulations are becoming increasingly stringent, and higher requirements are put forward for the emission of catalytic cracking units. In addition to the restrictions on the emission of SOX an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J35/10C10G11/04
CPCB01J23/002B01J23/755B01J35/1019B01J35/1061C10G11/04
Inventor 韩康
Owner ZIBO KANGNENGDA RARE EARTH MATERIAL CO LTD
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