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Catalyst for preparing CO and H2 through direct cracking of methanol, and preparation method and application thereof

A catalyst, methanol technology, applied in the field of chemical catalysts, methanol direct cracking to CO and H2 catalysts, can solve the problems of poor catalyst stability, short service life, easy sintering deactivation, etc., to improve thermal stability, strength Low loss and good thermal stability

Active Publication Date: 2020-10-30
四川蜀泰化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to: provide the catalyst, preparation method and application of direct cracking of methanol to produce CO and H2, to solve the above-mentioned existing problems The direct cracking of methanol to CO and H2 has the disadvantages of poor catalyst stability, easy sintering deactivation, and short service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Direct cracking of methanol to produce CO and H 2 The catalyst, in parts by weight, said catalyst includes 45 parts of CuO, 15 parts of ZnO, La 2 o 3 3 parts, MgO 2 parts, Al 2 o 3 4 parts, ZrO 2 4 copies, K 2 O 1 part, SiO 2 1 part, CaO 0.3 part, of which ZrO 2 , MgO and Al 2 o 3 Formation of ZrO 2 -MgAl 2 o 4 spinel carrier, K 2 O, SiO 2 , CaO and Al 2 o 3 Potassium nepheline is formed.

[0039] A direct cracking of methanol to produce CO and H 2 The preparation method of catalyst, comprises the steps:

[0040] Step 1. Weigh pseudo-boehmite in proportion and add it to deionized water, raise the temperature to 70°C, then add nitric acid under stirring, and stir vigorously for 3 hours to obtain aluminum glue solution, pseudo-boehmite, deionized water and The mass ratio of nitric acid is 25:120:1;

[0041] Step 2. Weigh active magnesium oxide in proportion and add it to deionized water, and grind the magnesium oxide to 250 mesh or above with a coll...

Embodiment 2

[0054] On the basis of Example 1, direct cracking of methanol to produce CO and H 2 The catalyst, in parts by weight, said catalyst includes 55 parts of CuO, 22 parts of ZnO, La 2 o 3 4 parts, MgO 4 parts, Al 2 o 3 7 parts, ZrO 2 6 copies, K 2 O 1.5 parts, SiO 2 2 parts, CaO 0.5 parts, of which ZrO 2 , MgO and Al 2 o 3 Formation of ZrO 2 -MgAl 2 o 4 spinel carrier, K 2 O, SiO 2, CaO and Al 2 o 3 Potassium nepheline is formed.

[0055] A direct cracking of methanol to produce CO and H 2 The preparation method of catalyst, comprises the steps:

[0056] Step 1. Heat up to 75°C and stir vigorously for 2 hours;

[0057] Step 3, the feeding time is 2 hours, and after the feeding is completed, the temperature is raised to 75° C. and aged for 2 hours;

[0058] Step 4, soaking for 1 hour, and finally roasting at 750°C for 3 hours;

[0059] Step 5, Cu(NO 3 ) 2 , Zn(NO 3 ) 2 , La(NO 3 ) 3 Medium CuO, ZnO, La 2 o 3 The mass proportioning ratio is 55:22:4, a...

Embodiment 3

[0066] On the basis of Example 1, the direct cracking of methanol produces CO and H Catalysts, in parts by weight, said catalysts include 65 parts of CuO, 30 parts of ZnO, La 2 o 3 5 parts, MgO 6 parts, Al 2 o 3 10 parts, ZrO 2 8 copies, K 2 2 parts of O, SiO 2 3 parts, 0.8 parts of CaO, of which ZrO 2 , MgO and Al 2 o 3 Formation of ZrO 2 -MgAl 2 o 4 spinel carrier, K 2 O, SiO 2 , CaO and Al 2 o 3 Potassium nepheline is formed.

[0067] A direct cracking of methanol to produce CO and H 2 The preparation method of catalyst, comprises the steps:

[0068] Step 1. Heat up to 80°C and stir vigorously for 1 hour;

[0069] Step 3, the feeding time is 3 hours, and after the feeding is completed, the temperature is raised to 80° C. and aged for 1 hour;

[0070] Step 4, soaking for 1.5 hours, and finally roasting at 900°C for 2 hours;

[0071] Step 5, Cu(NO 3 ) 2 , Zn(NO 3 ) 2 , La(NO 3 ) 3 Medium CuO, ZnO, La 2 o 3 The proportioning ratio is 65:30:5, and...

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PUM

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Abstract

The invention discloses a catalyst for preparing CO and H2 through direct cracking of methanol, and a preparation method and application of the catalyst. The invention aims to overcome the defect thata catalyst for preparing CO and H2 through direct cracking of methanol is poor in stability, prone to deactivation after sintering and short in service life. The catalyst comprises the following components in parts by weight: 55 parts of CuO, 22 parts of ZnO, 4 parts of La2O3, 4 parts of MgO, 7 parts of Al2O3, 6 parts of ZrO2, 1.5 parts of K2O, 2 parts of SiO2 and 0.5 part of CaO, wherein the ZrO2, the MgO and the Al2O3 form a ZrO2-MgAl2O4 spinel carrier, and the K2O, the SiO2, CaO and Al2O3 form kaliophilite. According to the invention, the catalyst has characteristics of high strength, goodthermal stability and low catalyst strength loss after reduction; the catalyst is not easily pulverized during the use process and can substantially reduce side reactions; and the service life of thecatalyst can be effectively prolonged.

Description

technical field [0001] Direct cracking of methanol to produce CO and H 2 Catalyst, preparation method and application thereof, the invention belongs to the technical field of chemical catalysts, and specifically relates to the direct cracking of methanol to produce CO and H 2 catalyst technology field. Background technique [0002] CO and H 2 It is an important raw material in the fine chemical and pharmaceutical industries, and it can also be used as a protective gas in the heat treatment industry to prevent oxidation and decarburization of workpieces. In recent years, with the vigorous development of the pharmaceutical industry, the demand for CO has continued to rise, and the demand for devices with an hourly CO gas production of tens to hundreds of cubic meters is increasing, and methanol cracking to produce CO is favored. In addition, in the heat treatment industry, due to the safety of hydrogen production from ammonia decomposition, more and more protective gas unit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83B01J35/10C01B32/40C01B3/22
CPCB01J23/83C01B32/40C01B3/22C01B2203/0277B01J35/394B01J35/61Y02P20/52
Inventor 吴小强严会成欧军刘阳许云波郭刚孙莹
Owner 四川蜀泰化工科技有限公司
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