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Granular solid super strong acid catalyst and its preparing method

A solid superacid, particle-type technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of inability to apply fixed bed catalysis, difficulty in separating catalyst from reaction system, unfavorable catalyst recovery and Reuse and other issues, to achieve the effect of easy operation, high product purity and high catalytic activity

Inactive Publication Date: 2003-06-25
曲阜市圣泉催化应用科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far SO 4 2- / M X o Y The catalyst and its preparation method are still in the research stage. In order to increase the specific surface area of ​​the catalyst, SO 4 2- / M X o Y Catalysts are designed as powders with a particle size of more than 100 meshes, and some are even ultrafine powders, which makes it difficult to separate the catalyst from the reaction system and is not conducive to the recovery and reuse of the catalyst.
Another disadvantage of powder catalysts is that they are only suitable for fluid bed catalysis and cannot be applied to fixed bed catalysis under gas phase conditions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Granular Zr(OH) 4 -Al 2 o 3 Preparation of vector

[0018] 300 kg of 3% ZrOCl in a 500 liter container 2 Aqueous solution, add 100 kilograms of φ = 3 mm particle carrier to the solution to make it more fully impregnated, after 6 minutes, add ammonia water under stirring to adjust the pH value to 8, let it stand for 3 hours, filter the aqueous solution, and wash until nothing To remove harmful ions, move it into a desiccator and dry it at 110°C.

[0019] Granular SO 4 2- / ZrO 2 -Al 2 o 3 Catalyst preparation

[0020] The dried Zr(OH) 4 -Al 2 o 3 The granular carrier is immersed in a 1-meter deep sulfuric acid solution for 5 minutes, the sulfuric acid solution is filtered off, and after being fully dried in a desiccator, it is put into a roasting furnace and roasted at 550°C for 4 hours.

Embodiment 2

[0022] Granular Zr(OH) 4 -Al 2 o 3 Preparation of vector

[0023] 300 kg of 3% Zr(NO 3 ) 4 Aqueous solution, add 100 kilograms of φ = 5 mm granular carrier to the solution to make it more fully impregnated, after 10 minutes, add ammonia water under stirring to adjust the pH value to 9, let it stand for 2 hours, filter the aqueous solution, and wash until nothing To remove harmful ions, move it into a desiccator and dry it at 120°C.

[0024] Granular SO 4 2- / ZrO 2 -Al 2 o 3 Catalyst preparation

[0025] The dried Zr(OH) 4 -Al 2 o 3 The granular carrier is immersed in a 1 meter deep sulfuric acid solution for 9 minutes, the sulfuric acid solution is filtered off, and after being fully dried in a desiccator, it is put into a roasting furnace and roasted at 600°C for 2.5 hours.

Embodiment 3

[0027] Granular Ti(OH) 4 -Sn(OH) 2 -Al 2 o 3 Preparation of vector

[0028] Add appropriate amount of acid to dissolve 7.2 kg of SnCl in a 500 liter container 2 , and then add 7.8 kg of Ti(SO 4 ) 2 and deionized water, stirred to make Ti(SO 4 ) 2 Dissolve, add 120 kg of granular carrier with φ = 3 mm, soak for 6 minutes, add ammonia water under stirring to adjust the pH value to 10, after standing for 3 hours, filter the aqueous solution, wash until there are no harmful ions, at 115 ° C Let it dry.

[0029] Granular SO 4 2- / TiO 2 -SnO 2 -Al 2 o 3 Catalyst preparation

[0030] The fully dried Ti(OH) 4 -Sn(OH) 2 -Al 2 o 3 The granular carrier is moved into a 500 kg container and filled with 0.5 m deep H 2 SO 4 Immerse for 7 minutes, filter off the sulfuric acid solution, fully dry in a desiccator, then transfer to a roasting furnace and roast at 620°C for 2.5 hours.

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PUM

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Abstract

The present invention provides a granular solid super strong acid catalyst and its preparation process. The active carrier is carried by granular basic carrier and contains oxide capable of binding with sulfate radical ion to form active catalyst layer; and the granular basic carrier contains porous oxide supporting the active catalyst layer and with certain strength and shape. During the preparation, granular basic carrier is first soaked into the salt solution of active carrier, ammonia water is added to regulate pH value greater than 8, the water solution is filtered out and filtered matter is washed and dried; and after soaking the dried granular carrier in sulfuric acid solution and filtering to eliminate sulfuric acid solution, the filtered matter is dried and roasted at 550-650 deg.c to obtain the catalyst.

Description

technical field [0001] The invention relates to a catalyst used in the chemical field, in particular to a granular solid superacid catalyst and a preparation method of the catalyst. Background technique [0002] Since the late 1970s, it has been found that the SO 4 2- Supported on some metal oxides, after calcination under certain temperature conditions, a kind of SO can be obtained. 4 2- / M X o Y Type (M X o Y Represents metal oxide) solid acid, as determined by Hammett indicator, its acid strength can reach up to 10,000 times that of 100% sulfuric acid. Therefore, SO 4 2- / M X o Y Type solid acids are called superacids. Makoto Hino and Kazushi Arata published SO for the first time on December 17, 1979 4 2- / ZrO 2 Catalyst preparation method; New Solid Acid And Bases: Their Catalytic Properties (Kodamsha.1td; Japan.1989 ToKgo) written by Hiroyuki Tabe, etc., for some SO 4 2- / M X o Y The preparation method, spectroscopic properties, acid center structure ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/053B01J37/02
Inventor 高根之赵斌孙玉希
Owner 曲阜市圣泉催化应用科技有限公司
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