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A method for preparing silicon-containing alumina dry glue

A technology of silica-alumina and dry glue, which is applied in chemical instruments and methods, catalyst carriers, chemical/physical processes, etc., can solve the problems of large proportion and unsuitable hydrogenation catalyst materials, etc., and achieve improved surface area and uniform solid product particles , Acidity improvement effect

Active Publication Date: 2016-02-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The prepared catalyst has a large proportion of small pores <5nm, which is not suitable for heavy oil or residual oil hydrogenation catalyst material

Method used

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  • A method for preparing silicon-containing alumina dry glue

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Fully mix 100g of kaolin raw soil with 50mL of 2.0mol / L acetic acid and 10g of polyethylene glycol solution dissolved in 50mL of water, and carry out modification treatment on a hydrothermal treatment device. The hydrothermal treatment temperature is 600°C, and the treatment is 4h. . The processed kaolin is cooled and pulverized through a 160-mesh sieve and collected for use.

[0028] The concentration of the sodium metaaluminate solution prepared is 80gAl 2 o 3 / L is 0.7L in total, heated to 80°C for use, the concentration of aluminum sulfate solution is 20gAl 2 o 3 / L, a total of 2L, heated to 80°C for use.

[0029] Add 1.5L of distilled water into the gel tank and heat to 80°C. Respectively take 5g of modified kaolin after sieving and put it into sodium metaaluminate solution and aluminum sulfate solution, and flow into the above two kinds of slurries to keep the pH value at 8.5, and the solid-liquid ratio in the gelling tank is 50g / L remains unchanged, calcul...

Embodiment 2

[0031] Other conditions are the same as in Example 1, except that the amount of modified kaolin is increased to 12g, and silicon-containing alumina B is prepared, wherein SiO 2 The content is 15wt%.

Embodiment 3

[0033] Other conditions are the same as in Example 1, except that kaolin is replaced by montmorillonite, and silicon-containing alumina C is prepared, wherein SiO 2 The content is 5wt%.

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Abstract

The invention discloses a method for preparing silicon-containing alumina dry glue. The method includes: mixing raw clay with weak acid and dispersant, then performing hydrothermal treatment, and then crushing and sieving to obtain modified clay with a particle size greater than 160 mesh; after modifying the clay, crushing and sieving, and The clay is respectively added to the aluminum-containing alkaline solution and the aluminum-containing acidic solution, and then co-flowed under suitable conditions to form a gel, filtered, washed with water, and dried to obtain a silicon-containing alumina dry glue. The method can organically combine the clay and the generated alumina particles, adjust the pore structure of the silicon-containing alumina and the acidity of the silicon-containing alumina, and further obtain silicon-containing alumina with uniform particles and concentrated pore distribution. The silicon-containing alumina dry glue of the present invention is suitable for the carrier component of heavy oil or residual oil hydrodemetallization, hydrodesulfurization or hydroconversion catalyst.

Description

technical field [0001] The invention relates to a preparation method of silicon-containing alumina dry glue, in particular to a preparation method of silicon-containing alumina dry glue suitable for heavy oil or residual oil hydrotreating catalyst carrier materials. Background technique [0002] In the preparation process of catalysts used in petroleum refining, alumina or silica-containing alumina is usually used as a carrier. SiO alone 2 Only weakly acidic, the acidity of alumina is not strong, and the combination of the two shows a strong acidity. Many studies have shown that adding an appropriate amount of silica to alumina can increase the acidity and specific surface area of ​​alumina, which is beneficial to polymerization and hydrogenation reactions. Silicon-containing alumina has unique advantages and has been successfully applied in the development of various hydrogenation catalysts. The preparation methods of silicon-containing alumina mainly include precipitati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J32/00B01J21/12
Inventor 朱慧红孙素华刘杰刘立军金浩杨光
Owner CHINA PETROLEUM & CHEM CORP
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