A boron-containing aluminum hydroxide solid elastomer and preparation method thereof

A technology of aluminum hydroxide and dry glue, applied in chemical instruments and methods, catalyst activation/preparation, catalyst carrier, etc., can solve the problems of poor dispersion of boron, complicated operation process, deterioration of working environment, etc., and achieve suitable pore structure and Acidity, simple preparation method, effect of improving specific surface area

Active Publication Date: 2011-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method adopts the strong acidity of ammonium fluoroborate or boron trifluoride, which will seriously lose the strength and specific surface area of ​​the catalyst, and the activity of the catalyst will be greatly reduced, and the compound containing fluorine and boron is poisonous, which not only deteriorates the working environment, but also It is very easy to corrode the equipment and cause serious pollution to the environment
In addition, this method needs to be heated to 50-90°C when mixing, the operation process is complicated, and the production cost is increased.
However, if boric acid is used at room temperature, boric acid is easy to...

Method used

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  • A boron-containing aluminum hydroxide solid elastomer and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] will contain Al 2 o 3 5g / 100mL AlCl 3 Solution 2000mL with NH 3 10g / 100mL of ammonia water was added dropwise to the gelling reaction tank stirred at 60°C to keep the pH value at 7.6, and the reaction contact time was 40min. Aging was carried out at a temperature of 70°C and a pH value of 8.0. The aging time is 1h. The product was filtered, and then washed with deionized water with a solid-to-liquid volume ratio of 1:20 at a washing temperature of 80° C. for three times. The obtained filter cake was dried at 120° C. for 3 h.

Embodiment 2

[0027] After the gelling reaction of Example 1, add the 2 o 3 3g / 100mL organic compound solution 100mL. The boron-containing organic compound solution is prepared by dissolving boric acid in water, and the molar ratio of boric acid to mannitol is 1:1, and the others are the same as in Example 1.

Embodiment 3

[0029] The boron-containing organic compound solution in Example 2 was replaced by the boric acid to ethylene glycol molar ratio of 1.0:1.5, and the others were the same as in Example 1.

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Abstract

The invention discloses a boron-containing aluminum hydroxide solid elastomer and the preparation method thereof. In the method, a stable solution of boron-containing organic compounds is added to conventional aluminum hydroxide gel, and the mixture is aged, filtered, washed and dried to obtain boron-containing aluminum hydroxide solid elastomer. The boron-containing aluminum hydroxide solid elastomer of the invention is a carrier ingredient with excellent performance, can provide large pore volume and large specific surface area, possesses suitable pore structure and acid property, and is especially suitable for being used as the catalyst material required in catalysis and process of heavy hydrocarbon.

Description

technical field [0001] The invention relates to a boron-containing aluminum hydroxide dry glue and a preparation method thereof, in particular to a macroporous boron-containing aluminum hydroxide dry glue with a certain acidity and a preparation method thereof. Background technique [0002] Aluminum hydroxide dry gel is a precursor for the preparation of alumina. Alumina has the characteristics of good thermal stability, many micropores, good strength, and high water absorption. It is an ideal carrier component for preparing various supported catalysts, and is widely used in petroleum, chemical and other industries. In practical applications, catalytic promoter components, such as boron, are usually added to improve the pore structure, specific surface and acid properties of alumina, improve the dispersion of active metals and the interaction between active metals and supports, so as to improve the catalytic activity of the catalyst. Reaction performance, improve anti-cokin...

Claims

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Application Information

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IPC IPC(8): B01J21/04B01J21/02B01J35/10B01J37/00B01J32/00
Inventor 王敏凌凤香王丽君孙万付
Owner CHINA PETROLEUM & CHEM CORP
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