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Preparation method for monolithic catalyst sample

A monolithic catalyst, catalyst technology, applied in catalyst activation/preparation, catalyst carrier, chemical instruments and methods, etc., can solve the problems that cannot be directly used for the preparation of monolithic catalyst samples, lack of technology, etc., to shorten the research and development cycle, size Accurate control and the effect of reducing R&D costs

Inactive Publication Date: 2012-04-18
广州市威格林环保科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to the lack of corresponding technology to directly prepare monolithic catalysts into catalyst samples, another aspect is that the volume of honeycomb ceramic supports sold on the market is greater than 100 mL, which cannot be directly used to prepare monolithic catalyst samples. The monolithic catalyst also lacks the corresponding technology, and it is prepared as a monolithic catalyst sample

Method used

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  • Preparation method for monolithic catalyst sample
  • Preparation method for monolithic catalyst sample
  • Preparation method for monolithic catalyst sample

Examples

Experimental program
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Effect test

Embodiment 1

[0026] The total flow rate of reaction gas is 300 mL / min, and the control space velocity is required to be 15000 h -1 , so the required volume of the honeycomb ceramic carrier is 1.2 mL. The inner diameter of the fixed-bed reactor is 7 mm, and the diameter and length of the honeycomb ceramic carrier are 7 mm and 31 mm, respectively. Therefore, diamond drill bits with inner diameter and length of 7mm and 35mm were selected. The size of the purchased cylindrical cordierite honeycomb ceramics is φ101.91*123.26mm. A certain number of small cylinders were drilled on the cordierite honeycomb ceramics, and then cut with a cutting machine to a length of 31 mm. Finally, they were rinsed with deionized water, dried at 110 °C for 4 h, and then placed in a muffle furnace with 2°C / min programmed temperature rise to 550°C for 2 h. The process of drilling a small-volume honeycomb ceramic carrier from a honeycomb ceramic carrier is as follows: figure 1 as shown, figure 1 1 in it is a hon...

Embodiment 2

[0030] The total flow rate of reaction gas is 300 mL / min, and the control space velocity is required to be 15000 h -1 , so the required volume of the honeycomb ceramic carrier is 1.2 mL. The inner diameter of the fixed-bed reactor is 9 mm, and the diameter and length of the honeycomb ceramic carrier are 9 mm and 19 mm, respectively. Therefore, diamond drill bits with inner diameter and length of 9 mm and 35 mm were selected. The size of the purchased cylindrical cordierite honeycomb ceramics is φ117.39*151.25mm. A certain number of small cylinders were drilled on the cordierite honeycomb ceramics, and then cut with a cutting machine to a length of 19 mm. Finally, they were rinsed with deionized water, dried at 110 °C for 4 h, and then placed in a muffle furnace with 2°C / min programmed temperature rise to 550°C for 2 h.

[0031] Weigh the calcined small-volume honeycomb ceramic carrier; immerse it in the catalyst coating solution, take it out slowly after 5 min, dry the resi...

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Abstract

The invention provides a preparation method for a monolithic catalyst sample. The method mainly comprises the following steps of: preparing small-volume honeycomb ceramic; and loading catalyst active ingredients onto a carrier. The coating of the integral catalyst sample prepared with the method uniform, and the surface property, pore canal structure and the like are extremely approximate to those of a large monolithic catalyst; and when the monolithic catalyst sample is used for evaluating a fixed-bed micro-reactor, the catalytic performance and structural representation result of the monolithic catalyst sample can be associated with the large monolithic catalyst, and the aims of truly lowering the research and development cost and shortening the research and development period are fulfilled.

Description

technical field [0001] The invention relates to a method for preparing a monolithic catalyst sample, and another aspect of the invention is a method for preparing a small-volume honeycomb ceramic carrier. [0002] Background technique [0003] Monolithic catalysts are integrated catalysts that are neatly arranged with many narrow parallel channels. Because the cross-section of the ceramic carrier catalyst developed in the early stage has a honeycomb structure, it is also called a honeycomb catalyst. Its basic characteristic is that there is limited radial mixing in the channel, and there is generally no mass transfer between adjacent channels. Catalytically active components are made into extremely thin coatings (10-50 μm), and reacting gases or fluids pass through these pores and react. Compared with the traditional granular catalyst bed, the monolithic catalyst has a low pressure drop and is suitable for high space velocity reactions; its active components are all attac...

Claims

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Application Information

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IPC IPC(8): B01J37/02B01J32/00B01J35/04
Inventor 萧剑鸣赵向云汪加林韩晖范群
Owner 广州市威格林环保科技有限公司
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