Preparation and application of coating catalyst using ionic liquid as binder

A technology for coating catalysts and ionic liquids, which is applied in the preparation of organic compounds, carbon-based compounds, chemical elements of heterogeneous catalysts, etc., and can solve the problems of complex bonding operations, residues and high requirements.

Active Publication Date: 2016-10-26
INST OF PROCESS ENG CHINESE ACAD OF SCI
View PDF11 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Patent document CN104525242A proposes a method for preparing a molecular sieve monolithic catalyst, which uses a coating method to prepare a molecular sieve coating catalyst, which improves the utilization rate of the catalyst, but the catalyst is easy to peel off and has poor mechanical strength; patent document CN0185995. The coating catalyst is prepared by coating the catalyst on an inert carrier, but the bonding operation is complicated and requires high requirements, and the mechanical strength of the prepared catalyst is low
[0007] The patent document CN104801351A utilizes a spraying method to prepare a coated catalyst, and a

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (a) Preparation of catalyst for propylene oxidation to acrolein

[0042]Measure 1000mL of deionized water, add 1000.0g of ammonium molybdate, stir and dissolve in a 70°C water bath, add 2.9g of potassium nitrate and 5.5g of cesium nitrate after it is completely dissolved, and then add 573.9g of silica sol with a concentration of 40wt% , to obtain material A; measure 150mL of deionized water, add 396.9g of ferric nitrate nonahydrate, stir and dissolve in a water bath at 70°C, and after it is completely dissolved, add 229.0g of bismuth nitrate pentahydrate and 480.8g of nitric acid hexahydrate respectively Cobalt, 452.1g nickel nitrate hexahydrate, 150.5g concentration of 50wt% manganese nitrate aqueous solution, 19.6g lanthanum nitrate trihydrate, and 41.7g antimony trioxide were stirred to obtain material B; material B was added to the material under rapid stirring In A, a catalyst slurry was formed and aged with stirring at 65° C. for 2 hours to obtain the desired cata...

Embodiment 2

[0055] Except that the 1-butyl-3-methylimidazole acetate in embodiment 1 is changed into 1-hexyl-3-methylimidazole hexanoate, others are prepared according to the method of embodiment 1 to obtain the coating catalyst . The loading ratio of the catalyst is 31%, and the wear index test result is 3.4%; the pores with a diameter of 20-1000nm in the outer active component account for 78% of the total pore volume, and the pores with a diameter of 50-500nm account for 78% of the total pore volume. The pore volume accounts for 45% of the total pore volume.

[0056] According to the same method as in Example 1, the reaction of propylene oxidation to acrolein was carried out at 375° C. for 4 hours, and analyzed and calculated by gas chromatography on-line. The experimental results showed that the conversion rate of propylene was 91.1%, and the selectivity of acrolein was 89.8%. .

Embodiment 3

[0058] (a) Preparation of catalyst for acrolein oxidation to acrylic acid

[0059] Measure 500mL of deionized water, add 500.0g of ammonium heptamolybdate tetrahydrate, stir and dissolve in a 70°C water bath to obtain solution A; measure 250mL of deionized water, add 129.0g of ammonium metavanadate, and place in a 70°C water bath Stir and dissolve in the medium to obtain solution B; measure 100mL of deionized water, add 52.1g of antimony trioxide, put it in a water bath at 70°C and stir to dissolve, after it is completely dissolved, add 171.0g of copper nitrate trihydrate and 60.0g of strontium nitrate and 63.5g of ammonium tungstate, stirred and dissolved to obtain solution C; measure 20mL of deionized water, add 9.5g of strong potassium oxide, stir and dissolve at room temperature, and add 322.0g of silica sol with a concentration of 40wt% after it is completely dissolved After stirring at room temperature for 15 minutes, material D was obtained; material D was added to solu...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Diameteraaaaaaaaaa
Diameteraaaaaaaaaa
Login to view more

Abstract

The invention relates to a method of producing a coating catalyst and application thereof. The method of producing the coating catalyst comprises: applying catalyst powder with an active component to an inertial support under the action of ionic liquid, wherein the outer active component of the coating catalyst contains molybdenum oxide, bismuth oxide and other oxides, the inner active component is an inertial support such as aluminum oxide and silicon oxide. During preparation of the catalyst, it is possible to disperse the catalyst powder and ionic liquid jointly (or separately) in ethanol and is sprayed (simultaneously) to an inertial spherical support so as to obtain the coating catalyst. The catalyst forms pores of special distribution after being treated via drying and calcining and the like, has high mechanical strength, and has good reacting performance during acrolein production by propylene oxidation, (methyl) acrylic acid by (methyl) acrolein oxidation and methacrylaldehyde production by isobutylene.

Description

technical field [0001] The invention relates to the preparation and application of a coated catalyst using ionic liquid as a binder, and belongs to the field of catalyst preparation and application. Background technique [0002] The selective oxidation of olefins to prepare α, β unsaturated aldehydes and unsaturated acids is an important chemical process in industrial production. Typical reaction processes include propylene oxidation to acrolein, acrolein to acrylic acid, isobutylene to methacrolein and Oxidation of methacrolein to methacrylic acid. At present, the catalysts used in this type of reaction are mainly molybdenum and bismuth-based multi-component composite metal catalysts and heteropolyacid catalysts, among which the multi-component composite metal oxide catalysts include Mo-Bi-Fe-Co- O catalyst, Mo-V-Cu-O catalyst for acrolein oxidation to acrylic acid and Mo-Bi-Cs-Fe-O catalyst for isobutylene oxidation to methacrolein, heteropolyacid catalyst for methacrolei...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B01J35/10B01J23/889B01J23/888B01J23/887B01J27/199C07C47/22C07C45/35C07C57/055C07C51/235
CPCB01J23/002B01J23/8876B01J23/8885B01J23/8898B01J35/1061B01J35/1066B01J35/1071B01J2523/00C07C45/35C07C51/235C07C57/04C07C47/22B01J2523/68B01J2523/13B01J2523/15B01J2523/842B01J2523/54B01J2523/845B01J2523/847B01J2523/72B01J2523/3706B01J2523/53B01J2523/31B01J2523/41B01J2523/55B01J2523/17B01J2523/24B01J2523/69B01J2523/3712
Inventor 闫瑞一吕兆坡郭伟王亚男白银鸽钱建国王蕾张锁江
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap