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Forming method of catalyst

A molding method and catalyst technology, applied in chemical instruments and methods, catalyst activation/preparation, physical/chemical process catalysts, etc., can solve the problems of catalyst activity reduction, destruction of catalyst active sites, destruction, etc., to avoid activity reduction Effect

Active Publication Date: 2015-12-23
ENN SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, in the prior art, pseudo-boehmite and nitric acid are usually used as binders in the molding process of catalysts, which can make catalyst powders well shaped and the shaped catalysts have high mechanical strength, but Nitric acid is a strong acid with strong oxidizing and corrosive properties, which will corrode and destroy the active sites of the catalyst, and high-temperature calcination is required to eliminate nitric acid after molding, which leads to sintering of some catalysts and further destroys the active sites of the catalyst , and destroy the pore structure of the catalyst after molding, reducing the activity of the catalyst after molding

Method used

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  • Forming method of catalyst
  • Forming method of catalyst

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Experimental program
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Effect test

Embodiment 1

[0048] 1. Fully mix 200g of nickel-based catalyst powder and 10g of scallop powder.

[0049] 2. Add 100g of 50% alkaline silica sol and mix thoroughly again to obtain wet dough.

[0050] 3. Put the wet dough into extruder and dry at 100°C for 24 hours.

[0051] 4. Crushing and sieving.

Embodiment 2

[0053] 1. Fully mix 200g of nickel-based catalyst powder and 10g of scallop powder

[0054] 2. Add 100g of 50% alkaline silica sol and mix thoroughly again.

[0055] 3. Then add 80g of 50% starch solution and mix for the third time.

[0056] 4. Finally, add 20 g of ammonium carbonate and mix for the fourth time to obtain a wet dough.

[0057] 5. Put the wet dough into extruder and dry at 100°C for 24 hours.

[0058] 6. Crushing and sieving.

Embodiment 3

[0060] 1. Fully mix 200g nickel-based catalyst powder and 6g magnesium stearate

[0061] 2. Add 200g of 30% alkaline silica sol and 100g of 30% alkaline aluminum sol and mix thoroughly again.

[0062] 3. Then add 20g of 30% starch solution and 20g of 50% PEG solution for the third mixing

[0063] 4. Finally, 30 g of ammonium bicarbonate and 30 g of urea were added for the fourth mixing to obtain a wet dough.

[0064] 5. Put the wet dough into extruder and dry at 100°C for 24 hours.

[0065] 6. Crushing and sieving.

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Abstract

The invention provides a forming method of a catalyst, and belongs to the field of the catalyst. By adopting the forming method of the catalyst, active sites of the catalyst are not damaged during the catalyst forming process, and the catalytic activity of the formed catalyst is prevented from being decreased. The forming method of the catalyst comprises the following steps: mixing the catalyst powder and an alkaline binder to obtain a wet lump, wherein the alkaline binder comprises at least one of alkaline silica sol and alkaline aluminum sol; and forming the wet lump. The forming method can be used for forming the catalyst.

Description

technical field [0001] The invention relates to the field of catalysts, in particular to a catalyst shaping method. Background technique [0002] The solid catalyst needs to have a specific shape and size to adapt to the catalytic reactor during actual use. Therefore, the solid catalyst is usually shaped to obtain a specific shape and size before actual use, and the shaping of the catalyst is related to the activity of the catalyst. The close connection has a great influence on the catalytic activity of the catalyst, so the shaping treatment of the catalyst is very important in the preparation of the catalyst. [0003] There are many influencing factors involved in the catalyst molding process, among which the binder used in the molding process often has an important impact on the subsequent catalyst performance. For example, in the prior art, pseudo-boehmite and nitric acid are usually used as binders in the molding process of catalysts, which can make catalyst powders wel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J37/00
Inventor 赵伟武斌王俊美
Owner ENN SCI & TECH DEV