Preparation method of 3D printing aerogel loaded noble metal catalyst

A precious metal catalyst, 3D printing technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, chemical instrument and method, physical/chemical process catalyst, etc. Noble metals are easy to agglomerate and other problems, to achieve a high degree of structure controllability, a wide range of adjustable range, and the effect of improving catalytic activity

Pending Publication Date: 2022-03-08
厦门点石新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of traditional preparation method has the following disadvantages: 1. Precious metals are easy to agglomerate and have poor dispersion; 2. The reaction conditions are harsh; 3. The preparation environment is not green; 4. The preparation cycle is long and other shortcomings

Method used

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  • Preparation method of 3D printing aerogel loaded noble metal catalyst
  • Preparation method of 3D printing aerogel loaded noble metal catalyst
  • Preparation method of 3D printing aerogel loaded noble metal catalyst

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preparation example Construction

[0027] Such as figure 1 Shown, a kind of preparation method of 3D printing airgel supported noble metal catalyst of the present invention comprises the following steps:

[0028] 1) Prepare the premix: mix the inorganic silicon source, UV-curable resin, whiskers and metal nanomaterials, and stir to obtain the premix;

[0029] 2) First put the premixed solution into the resin tank of the stereolithography 3D printer, load the STL file of the required 3D structure into the slicing software; then fill the printing module with carbon dioxide, and print according to the set model; then The printed 3D structure hydrogel is aged, the aged hydrogel is replaced by solvent, and the replaced gel is subjected to supercritical carbon dioxide drying; finally, the product after supercritical drying is roasted to obtain 3D printing Silica aerogels loaded with noble metal catalysts.

[0030] In the present invention, the whiskers are inorganic whiskers, including ceramic whiskers (SiC, potass...

Embodiment 1

[0032] (1) Put 0.1g of potassium tetrachloroplatinate (III) into 50mL of pure water to obtain a transparent and clear solution, then drop into 8.0mL of 0.15mol / L sodium borohydride solution and stir, then precipitate and centrifuge, and use pure water Wash with absolute ethanol several times, and dry in an oven for several hours to obtain metal nanomaterials.

[0033] (2) 70wt% of UV curable resin, 15wt% of hexanediol, 3wt% of whiskers, 2wt% of metal nanomaterials and 10wt% of 0.1mmol sodium silicate were mixed and uniformly stirred to control the loading of metal nanomaterials to 0.2%. Pour the mixture into the resin tank of the SLA 3D printer, load the STL file of the ordered mesh porous cylinder structure into the slicing software, fill the printing module with 2MPa high-pressure carbon dioxide, and print according to the set model. Aging the printed 3D structure hydrogel, the aging temperature is 35°C, and the aging time is 10h. The aged hydrogel is then replaced with anhy...

Embodiment 2

[0042] (1) Put 0.05g of potassium tetrachloroaurate(III) into 40mL of pure water to obtain a transparent and clear solution, then drop into 10.0mL of 0.15mol / L sodium borohydride solution and stir, then precipitate and centrifuge, and use pure water Wash with absolute ethanol several times, and dry in an oven for several hours to obtain metal nanomaterials.

[0043](2) 75wt% of UV curable resin, 14wt% of hexanediol, 3wt% of whiskers, 1wt% of metal nanomaterials and 7wt% of 0.15mmol sodium silicate were mixed and uniformly stirred to control the loading of metal nanomaterials to 0.1%. Pour the mixture into the resin tank of the SLA 3D printer, and load the STL file of the ordered mesh porous cylinder structure into the slicing software, fill the printing module with 2.5Mpa high-pressure carbon dioxide, and print according to the set model. Aging the printed 3D structure hydrogel, the aging temperature is 40°C, and the aging time is 16h. The aged hydrogel is then replaced with a...

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Abstract

The invention relates to a preparation method of a 3D printing aerogel loaded noble metal catalyst. The preparation method comprises the following steps: 1) preparing a premixed solution, namely mixing an inorganic silicon source, ultraviolet curing resin, whiskers and a metal nanomaterial, and stirring to obtain the premixed solution; (2) firstly, the premixed liquid is loaded into a resin tank of a three-dimensional photocuring molding 3D printer, and an STL file of a required 3D structure is loaded into slicing software; a printing module is filled with carbon dioxide, and printing is conducted according to the set model; the printed 3D structure hydrogel is aged, the aged hydrogel is subjected to solvent replacement, and the replaced gel is subjected to supercritical carbon dioxide drying; and finally, roasting the dried product to obtain the silica aerogel loaded with the noble metal catalyst for 3D printing. The preparation method is simple, and the catalyst is uniform in active component dispersion, high in catalytic activity, free of molds, integrally formed, capable of being applied to various scenes and important in significance.

Description

technical field [0001] The invention relates to the field of catalyst preparation, in particular to a method for preparing a 3D printing airgel-loaded noble metal catalyst. Background technique [0002] At present, the preparation methods of airgel-loaded noble metal catalysts mainly adopt methods such as impregnation method, deposition precipitation method, and ion exchange method. Such traditional preparation methods have the following disadvantages: 1. Precious metals are easy to agglomerate and have poor dispersion; 2. The reaction conditions are harsh; 3. The preparation environment is not green; 4. The preparation cycle is long and other shortcomings. The present invention can solve the above technical shortcomings by 3D printing airgel-loaded noble metal catalysts, and realize the advantages of high noble metal catalyst loading activity, good dispersion, and short cycle time. Contents of the invention [0003] The purpose of the present invention is to solve the ab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/08B01J23/42B01J23/44B01J23/46B01J23/50B01J23/52B01J35/04C02F1/72C02F1/74C02F101/34
CPCB01J23/42B01J35/04B01J23/52B01J23/50B01J23/462B01J23/44B01J21/08C02F1/725C02F1/74C02F2101/345B33Y70/10B33Y80/00
Inventor 臧丽
Owner 厦门点石新材料有限公司
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