Method for 3D printing of catalyst-carrier system with high specific surface area and high efficiency

A high specific surface area, 3D printing technology, applied in the field of additive manufacturing, can solve the problems such as the inability to control the microscopic morphology and pore structure of the carrier material, the lightweight, controllable structure and high specific surface area of ​​the carrier material, etc. The morphology and pore structure are simple and controllable, avoiding structural deformation, and the effect of high specific surface area

Active Publication Date: 2019-09-17
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned patents have tried to prepare porous ceramic/metal structures, but they do not have the lightweight, controllable structure and high specific surface area of ​​the carrier material, and cannot control the microscopic morphology and pore structu

Method used

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  • Method for 3D printing of catalyst-carrier system with high specific surface area and high efficiency
  • Method for 3D printing of catalyst-carrier system with high specific surface area and high efficiency
  • Method for 3D printing of catalyst-carrier system with high specific surface area and high efficiency

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0035] Example one:

[0036] Design the carrier structure through SolidWorks software, the bottom plate is 10*10*0.8mm 3 Square sheet, the designed geometric array unit has a square hole with a side length of 0.8mm and a depth of 0.8mm. The wall thickness between adjacent holes is 0.2mm, such as figure 2 Shown. The slices are sliced ​​through the software bound by the 3D printer manufacturer, the slice thickness is 50μm, and 3 layers of the bottom plate are added, and then imported into the 3D printer. Weigh 50wt.% of alumina powder, 1wt.% of trimethylbenzoyl-diphenyl phosphine oxide, 1wt.% of Triton X-100, 2wt.% of magnesium oxide, 2wt.% of silicon oxide and 16wt.% of sodium chloride. %, mixed with a ball mill for 48h. The obtained powder was added at a rate of 5 g / min to a 30 wt.% light-curable resin stirred at 120 r / min, and stirring was continued for 8 hours to obtain a ceramic slurry. Set the 3D printer parameters as high-level exposure time 6000ms, high-level static time...

Example Embodiment

[0037] Embodiment two:

[0038] Design the carrier structure through SolidWorks software, the base plate is 10*10*0.6mm 3 Square sheet, the designed geometric array unit is a regular quadrangular pedestal with a bottom side length of 0.8mm, a top side length of 0.4mm, and a height of 1mm. The distance between the bottom squares of adjacent pedestals is 0.2mm, such as image 3 Shown. The slices are sliced ​​through the software bound by the 3D printer manufacturer, the slice thickness is 50μm, and 3 layers of the bottom plate are added, and then imported into the 3D printer. Weigh 40wt.% zirconia powder, 2wt.% trimethylbenzoyl-diphenylphosphine oxide, 2wt.% Triton X-100, 2wt.% magnesium oxide, 2wt.% silicon oxide and 12wt.% polyvinyl alcohol. %, mixed by a ball mill for 72h. The obtained powder was added at a rate of 5 g / min to a 40 wt.% photo-curable resin stirred at 180 r / min, and stirring was continued for 10 hours to obtain a ceramic slurry. Set the 3D printer parameters as ...

Example Embodiment

[0039] Embodiment three:

[0040] Design the carrier structure through SolidWorks software, the bottom plate is 10*10*0.8mm 3 Square sheet, the designed geometric array unit is a truncated cone-shaped through hole with a bottom surface diameter of 0.8mm, a top surface diameter of 0.4mm, and a height of 0.8mm. The distance between the bottom centers of adjacent through holes is 1mm, such as Figure 4 Shown. The slices are sliced ​​through the software bound by the 3D printer manufacturer, the slice thickness is 50μm, and 3 layers of the bottom plate are added, and then imported into the 3D printer. Weigh trimethylbenzoyl-diphenyl phosphine oxide 2wt.%, Triton X-100 1wt.%, magnesium oxide 2wt.%, silicon oxide 2wt.% and sodium bicarbonate 8wt.%, and mix for 48h with a ball mill . The obtained powder was added to 55wt.% liquid polycarbosilane and 30wt.% light-curable resin stirred at 120r / min at a rate of 5g / min, and continuously stirred for 8h to obtain ceramic slurry. Set the 3D ...

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PUM

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Abstract

The invention relates to a method for 3D printing of a catalyst-carrier system with a high specific surface area and high efficiency. By adopting a process that ceramic powder or a precursor is independently grinded and dispersed into a light-cured resin, partial high temperatures and partial denaturation caused by collision in the mixing and ball-milling process are effectively avoided; printer parameters are selectively set for prepared slurry, so that the printing thickness of each layer is moderate, and rapid molding can be facilitated; due to a two-section heat preservation process of a ceramic carrier prefabricated part, cross-linking curing and cracking molding time is ensured, and structure deformation after calcining is avoided. Because of the high stability, a ceramic carrier prepared by using the method is applicable to different synthesis methods for carrying catalysts, working environments of the catalysts are not rigorously required, and new ideas are provided for large-scale industrial application of structure-function integrated catalysts.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, and relates to a method for 3D printing a catalyst-carrier system with high specific surface area and high efficiency, in particular to three-dimensional structure design, catalyst carrier printing preparation, and catalyst synthesis on the carrier surface, thereby preparing catalysts with high specific surface area, A method for a catalyst-support material system of high catalytic efficiency and high stability. Background technique [0002] The development of new catalyst systems and the relationship between catalyst structure and performance have attracted attention. Functional materials with fine macroscopic and microscopic structures are prepared by complex methods such as chemical vapor deposition, which hinders the potential large-scale industrial application of catalytic materials, and requires simpler and a more flexible approach to fabricate specialized 3D functional struc...

Claims

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Application Information

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IPC IPC(8): C04B35/622C04B38/04C04B38/06C04B38/02C04B35/10C04B35/48B33Y10/00B33Y70/00B33Y80/00C04B41/87C04B41/85B01J27/051B01J27/06B01J21/06B01J32/00
CPCB01J32/00B01J21/063B01J27/051B01J27/06B33Y10/00B33Y70/00B33Y80/00C04B35/10C04B35/481C04B35/622C04B38/02C04B38/04C04B38/0645C04B38/067C04B41/009C04B41/5011C04B41/5041C04B41/5054C04B41/85C04B41/87C04B2235/3813C04B2235/3826C04B2235/3873C04B2235/442C04B2235/444C04B2235/483C04B2235/486C04B2235/661
Inventor 梅辉黄伟钊成来飞张立同
Owner NORTHWESTERN POLYTECHNICAL UNIV
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