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Method for preparing anhydrous formaldehyde industrial catalyst by methanol dehydrogenation

An anhydrous formaldehyde and catalyst technology, applied in the field of industrial catalyst preparation, can solve the problems of high production cost, large bed resistance and high cost, and achieve the effects of adjustable molding size, improved selectivity and low cost

Inactive Publication Date: 2008-03-26
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of this invention is to provide a kind of with industrial sodium bicarbonate as raw material, activated carbon as auxiliary agent, bentonite as carrier, Na 2 SiO 3 A method for preparing anhydrous formaldehyde industrial catalyst for methanol dehydrogenation as a binder, to solve the problem of poor dehydration and separation effect, large energy consumption and high production cost in the existing method, and the use of powdered reagent sodium carbonate has high cost, The bed resistance is large, and the problem of easy loss

Method used

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Experimental program
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Effect test

Embodiment 1

[0014] The industrial sodium bicarbonate is used as a raw material, activated carbon is used as an auxiliary agent, and bentonite is used as a carrier, and the ingredients (mass %) are: 50% of industrial sodium bicarbonate, 20% of activated carbon, and 30% of bentonite. After mixing these three components evenly, and then with 5% Na as a binder 2 SiO 3 The solution is evenly mixed according to the solid-to-liquid ratio of 20:1, and then pressed into tablets, dried, calcined, crushed and sieved to obtain the product. The calcining temperature of the formed catalyst is 673K, and the calcining time is 1.5 hours.

Embodiment approach 2

[0016] According to the processing method of embodiment 1, its batching composition (mass %): industrial sodium bicarbonate 50%, gac 30%, bentonite 20%.

Embodiment approach 3

[0018] According to the processing method of embodiment 1, its batching composition (mass %): industrial sodium bicarbonate 60%, gac 20%, bentonite 20%.

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Abstract

The present invention discloses a preparation method of industrial catalyst for producing anhydrous formaldehyde by utilizing methyl alcohol dehydrogenation. Said preparation method includes the following steps: using (by wt%) 40%-60% of industrial sodium hydrogen carbonate as raw material, using 30%-20% of active carbon as adjuvant and using 30%-20% of bentonite as carrier, uniformly mixing them, then adding 5% of Na2SiO3 solution adhesive according to the solid-liquid ratio of 20:1, further uniformly mixing them, tabletting, drying, calcining, pulverizing and screening so as to obtain the invented product.

Description

technical field [0001] The invention relates to a method for preparing a catalyst, in particular to a method for preparing an industrial catalyst for methanol dehydrogenation to anhydrous formaldehyde by using industrial sodium bicarbonate as a raw material, activated carbon as an auxiliary agent, and bentonite as a carrier. technical background [0002] In recent years, with the increasing demand for synthetic high-quality engineering plastics and chemical products such as urotropine, the demand for anhydrous formaldehyde is increasing. In addition to being used alone, anhydrous formaldehyde is mainly used as a raw material for the production of other chemical products, such as the production of new plastic polyoxymethylene, condensation with phenol or urea to form phenolic resin or urea-formaldehyde resin, and production of urotropine. In addition, anhydrous formaldehyde is also widely used in the synthesis of polymer materials, new drug intermediates, high-grade spices, d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/232B01J21/18B01J21/16C07C47/04C07C45/52
Inventor 姚润生杨怀旺申峻王志忠
Owner TAIYUAN UNIV OF TECH
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