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Method for manufacturing ruthenium oxide-supported catalyst for preparing chlorine and catalyst manufactured thereby

A technology of supported catalyst and ruthenium oxide, which is applied in the direction of catalyst activation/preparation, preparation with chloride, metal/metal oxide/metal hydroxide catalyst, etc., can solve the composition or effect of loaded ruthenium components, and does not specifically provide And other problems, to achieve the effect of expanding scale, high conversion rate of hydrogen chloride, high activity

Pending Publication Date: 2021-08-10
HANWHA SOLUTIONS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at this time, there is no specific mention about the composition or effect of being able to support the ruthenium component only on the outer surface of the titanium dioxide carrier, so there is a limitation.

Method used

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  • Method for manufacturing ruthenium oxide-supported catalyst for preparing chlorine and catalyst manufactured thereby
  • Method for manufacturing ruthenium oxide-supported catalyst for preparing chlorine and catalyst manufactured thereby
  • Method for manufacturing ruthenium oxide-supported catalyst for preparing chlorine and catalyst manufactured thereby

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preparation example Construction

[0039] According to an embodiment of the present invention, a preparation method of a ruthenium oxide supported catalyst is provided, the ruthenium oxide supported catalyst is a ruthenium oxide catalyst for chlorine production, comprising the following steps: step (a), dissolving the ruthenium compound in an organic solvent to prepare a solution, and loaded on more than one carrier selected from titanium dioxide and alumina; step (b), drying; step (c), firing.

[0040] Different from the known technology, the catalyst of the present invention does not need alkali pretreatment in order to only contain the ruthenium oxide component in the shell layer on the outer surface of the titania carrier. Therefore, it can be easily prepared in three steps of loading, drying, and firing. Therefore, the preparation method can be simplified while maintaining the catalytic activity, which is beneficial for future scale-up. This can provide favorable effects in terms of time and economy of th...

Embodiment 1

[0077]

[0078] 40.0 g of titanium dioxide powder, 0.8 g of an organic binder, 29.0 g of ultrapure water heated to 60° C., and 5.0 g of titanium dioxide sol were mixed. The obtained mixture was extruded into a noodle-like strand with a diameter of 2.0 mmφ, dried in air at 60° C. for 2 hours, and then cut into a molded body with a length of 2 to 4 mm. The obtained compact was fired in air at 600° C. for 3 hours.

[0079]

[0080]After impregnating 5.0 g of the titania support obtained above with a solution prepared by dissolving 0.2 g of ruthenium chloride hydrate in 1.33 g of 1-propanol, drying was performed in air at 100° C. for 4 hours. The dried solid was calcined at 350° C. for 3 hours in an air-flowing electric furnace, and then slowly cooled to room temperature to finally obtain a ruthenium oxide catalyst with a ruthenium oxide content of 2.0 parts by weight. In addition, the degree of outer surface loading of the ruthenium component measured by VMS was 0.32.

[...

Embodiment 2

[0086] For the catalyst obtained in Example 1, the initial activity evaluation was performed in the same manner as in Example 1 except that the temperature of the catalyst layer used was 283°C. The results are shown in Table 1.

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Abstract

The present invention relates to a method for manufacturing a ruthenium oxide-supported catalyst for preparing chlorine and, more specifically, to a method for manufacturing a catalyst and a catalyst manufactured thereby, wherein the catalyst contains a ruthenium ingredient of which the support level on the outer surface of the support is significantly improved, and the use of the catalyst in chlorine production can provide a high conversion rate of chlorine even at a low reaction temperature. Provided according to an embodiment of the present invention is a method for manufacturing a ruthenium oxide-supported catalyst for preparing chlorine, the method comprising the steps of: (a) dissolving a ruthenium compound in an organic solvent to prepare a solution and supporting same on at least one support selected from among titania and alumina; (b) drying; and (c) sintering. According to an embodiment of the present invention, specifically, a simplified process is provided, wherein a catalyst containing ruthenium oxide only at the outer surface layer of a titania support can be prepared without an alkaline pretreatment, thereby exhibiting an advantageous effect in terms of scale-up.

Description

technical field [0001] The invention relates to a preparation method of a ruthenium oxide supported catalyst for chlorine production, in particular to a catalyst in which the degree of ruthenium component loaded on the outer surface of a titanium dioxide carrier is significantly improved, and when chlorine gas is prepared with it, even at a lower At the reaction temperature, the preparation method of the catalyst with high chlorine conversion rate and the catalyst prepared therefrom are also provided. Background technique [0002] The method of using hydrogen chloride to produce chlorine by catalytic oxidation is derived from the Deacon Process. Representative catalysts include ruthenium-based catalysts, copper-based catalysts, and cerium-based catalysts. In particular, compared with copper-based catalysts and cerium-based catalysts, ruthenium-based catalysts have high activity at a small amount of catalyst and lower reaction temperature. [0003] The ruthenium oxide suppor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J37/02B01J37/08B01J23/46C01B7/04B01J35/00
CPCC01B7/04B01J23/462B01J37/035B01J21/063B01J37/088B01J37/0236Y02P20/20B01J37/0201B01J37/0203B01J37/0009B01J35/397B01J35/50B01J35/612B01J35/40B01J35/613B01J35/615B01J37/08B01J6/001
Inventor 李佳蓝金元用禹恩智全廷桓赵永镇
Owner HANWHA SOLUTIONS CORP
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