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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 structure of the carrier material. The macroscopic structure is limited to through holes. And it does not require the design principle and the relationship between the carrier and the catalyst, which has limited improvement in the efficiency and stability of the catalyst

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

Embodiment 1

[0036] Design the carrier structure through SolidWorks software, the bottom plate is 10*10*0.8mm 3 For a square sheet, the designed geometric array unit has a square hole with a side length of 0.8mm and a depth of 0.8mm, and the wall thickness between adjacent holes is 0.2mm, such as figure 2 shown. Slice through the software bound by the 3D printer manufacturer, the thickness of the slice is 50 μm, add 3 layers of bottom plate, and import it into the 3D printer. Weigh 50wt.% of alumina powder, 1wt.% of trimethylbenzoyl-diphenylphosphine oxide, 1wt.% of Triton X-100, 2wt.% of magnesium oxide, 2wt.% of silicon oxide and 16wt.% of sodium chloride. %, mixed by ball mill for 48h. The obtained powder was added into 30 wt.% photocurable resin stirred at 120 r / min at a rate of 5 g / min, and the stirring was continued for 8 hours to obtain a ceramic slurry. The parameters of the 3D printer were set to 6000ms for the exposure time of the upper layer, 3000ms for the resting time for ...

Embodiment 2

[0038] Design the carrier structure through SolidWorks software, the bottom plate is 10*10*0.6mm 3 For a square sheet, the geometric array unit designed is a regular quadrangular prism with a side length of 0.8mm on the bottom surface, a side length of 0.4mm on the top surface, and a height of 1mm. The distance between the squares on the bottom of adjacent prisms is 0.2mm, such as image 3 shown. Slice through the software bound by the 3D printer manufacturer, the thickness of the slice is 50 μm, add 3 layers of bottom plate, and import it into the 3D printer. Weigh zirconia powder 40wt.%, trimethylbenzoyl-diphenylphosphine oxide 2wt.%, Triton X-100 2wt.%, magnesium oxide 2wt.%, silicon oxide 2wt.% and polyvinyl alcohol 12wt. %, mixed by ball mill for 72h. The obtained powder was added into 40 wt.% photocurable resin stirred at 180 r / min at a rate of 5 g / min, and the stirring was continued for 10 h to obtain a ceramic slurry. Set the 3D printer parameters as high layer expo...

Embodiment 3

[0040] Design the carrier structure through SolidWorks software, the bottom plate is 10*10*0.8mm 3 For a square sheet, the designed geometric array unit is a frustum-shaped through-hole with a diameter of 0.8 mm on the bottom surface, a diameter of 0.4 mm on the top surface, and a height of 0.8 mm. The distance between the centers of the bottom surfaces of adjacent through-holes is 1 mm, such as Figure 4 shown. Slice through the software bound by the 3D printer manufacturer, the thickness of the slice is 50 μm, add 3 layers of bottom plate, and import it into the 3D printer. Weigh trimethylbenzoyl-diphenylphosphine oxide 2wt.%, Triton X-100 1wt.%, magnesium oxide 2wt.%, silicon oxide 2wt.% and sodium bicarbonate 8wt.%, mix by ball mill for 48h . The obtained powder was added into 55wt.% liquid polycarbosilane and 30wt.% photocurable resin stirred at 120r / min at a rate of 5g / min, and the stirring was continued for 8h to obtain a ceramic slurry. The parameters of the 3D prin...

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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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