Preparation method of alumina dry glue containing silicon

A silica alumina, dry glue technology, applied in chemical instruments and methods, catalyst carriers, chemical/physical processes, etc., can solve the problems of unsuitable hydrogenation catalyst materials, large proportions, etc., and achieve low cost, acidity and acidity distribution. Improved, concentrated effect of pore distribution

Active Publication Date: 2014-05-07
CHINA PETROLEUM & CHEM CORP +1
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  • 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

Method used

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  • Preparation method of alumina dry glue containing silicon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Fully mix 200g of kaolin raw soil with 50mL of 2.0mol / L acetic acid and 20g 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 for 4 hours, and the hydrothermal treatment pressure is 0.25MPa .

[0034] Preparation of sodium metaaluminate solution concentration is 45gAl 2 o 3 / L totals 1.6L, the concentration of aluminum sulfate solution is 20gAl 2 o 3 / L, a total of 0.7L, for use.

[0035] Weigh 30g of the modified kaolin, add 1L of distilled water into the gelling tank, the solid content in the slurry is 3wt%, and heat to 70°C. Add the prepared sodium metaaluminate solution to the modified kaolin slurry, adjust the pH value to 9.0, and after 5 minutes of stabilization, add aluminum sulfate solution to adjust the pH to 3.0, and stabilize it for 5 minutes; swing 3 times in this way, add sodium metaaluminate solution, adjust the pH value o...

Embodiment 2

[0037] Other conditions are the same as in Example 1, except that the amount of modified kaolin is increased to 100g, the solid content in the slurry is 10wt%, and the condensate (OP- 10) 63mL (content 92g / L, calculated as 5wt% of the silicon-containing alumina content) to prepare silicon-containing alumina B.

Embodiment 3

[0039] Other conditions are the same as in Example 1, except that the kaolin is replaced by halloysite, the hydrothermal treatment temperature is changed to 700° C., and the treatment time is 3 hours to prepare silicon-containing alumina C.

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Abstract

The invention discloses a preparation method of an alumina dry glue containing silicon. The preparation method comprises the following steps: mixing original clay with a weak acid and a dispersant, then carrying out a hydrothermal treatment on the mixture so as to obtain modified clay; using an acidic solution containing aluminum and an alkaline solution containing aluminum to carry out a glue-forming reaction in the modified clay slurry by adopting a combined method of a pH swing method and a parallel-flow method, and after the glue-forming process, subjecting the glue-forming reaction product to processes of filtering, washing, and drying so as to obtain the alumina dry glue containing silicon. The alumina dry glue containing silicon has the advantages of uniform particle size, concentrated pore distribution, and proper acidity, and is especially suitable for being used to prepare a heavy oil or residual oil hydro-treatment 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] With the increasing requirements for deep processing of raw materials worldwide, the main energy structure is gradually developing towards macromolecules and high carbon. In order to effectively solve the problems of excessive diffusion resistance of heavy oil components in catalyst pores, heavy metal impurity deposition and coking, catalyst activity reduction or deactivation, etc., it is urgently required to widely use catalysts with large pore volume and high specific surface area in petrochemical and other industries. carrier. [0003] In the preparation process of catalysts used in petroleum refining, alumina or γ-Al containing a small amount of one or more other elements such a...

Claims

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Application Information

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IPC IPC(8): B01J32/00B01J21/14C10G45/04C10G49/02
Inventor 刘铁斌朱慧红孙素华刘杰金浩杨光
Owner CHINA PETROLEUM & CHEM CORP
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