Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High-temperature-resistant sintering catalyst for preparing chlorine by oxidizing hydrogen chloride and preparation method of high-temperature-resistant sintering catalyst

A technology of oxidation and high temperature resistance, applied in the direction of metal/metal oxide/metal hydroxide catalyst, preparation with chloride, physical/chemical process catalyst, etc., to achieve the effect of enhancing effect and improving high temperature sintering performance

Pending Publication Date: 2021-03-23
ZHEJIANG NORMAL UNIVERSITY +2
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the release of a large amount of reaction heat during the reaction, it is inevitable that there will be local overheating that will cause the catalyst to sinter and deactivate.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-temperature-resistant sintering catalyst for preparing chlorine by oxidizing hydrogen chloride and preparation method of high-temperature-resistant sintering catalyst
  • High-temperature-resistant sintering catalyst for preparing chlorine by oxidizing hydrogen chloride and preparation method of high-temperature-resistant sintering catalyst
  • High-temperature-resistant sintering catalyst for preparing chlorine by oxidizing hydrogen chloride and preparation method of high-temperature-resistant sintering catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) impregnating powdery titanium dioxide and tin tetrachloride aqueous solution in equal volumes, drying and roasting to obtain a tin-doped titanium dioxide carrier, the powdery titanium dioxide is in the rutile crystal form, and the concentration of the tin tetrachloride aqueous solution is 0.1 g / mL, the drying condition is drying at 100°C for 6 hours, and the roasting condition is roasting at 500°C for 6 hours in an oxygen atmosphere;

[0023] (2) impregnate the tin-doped titanium dioxide carrier obtained in step (1) with an aqueous solution of ruthenium trichloride to obtain a catalyst through drying and roasting, the concentration of the aqueous solution of ruthenium trichloride is 0.1 g / mL, and the drying The condition is drying at 75° C. for 12 hours, and the calcination condition is sintering at 250° C. in an air atmosphere for 6 hours.

Embodiment 2

[0025] (1) impregnating equal volumes of powdery titanium dioxide and tin tetrachloride aqueous solution, drying and roasting to obtain a tin-doped titanium dioxide carrier, the powdery titanium dioxide is a mixed crystal form of rutile crystal form and anatase crystal form, so The weight percentage of the titanium dioxide of the rutile crystal form in the titanium dioxide of the mixed crystal form is 80%, the concentration of the tin tetrachloride aqueous solution is 0.15g / mL, the drying condition is 6 hours at 200°C, and the roasting condition Baking under an oxygen atmosphere at 350°C for 12 hours;

[0026] (2) impregnate the tin-doped titanium dioxide carrier obtained in step (1) with an aqueous solution of ruthenium trichloride to obtain a catalyst through drying and roasting, the concentration of the aqueous solution of ruthenium trichloride is 0.1 g / mL, and the drying The condition is drying at 60° C. for 6 hours, and the calcination condition is sintering at 250° C. in...

Embodiment 3

[0028] (1) The powdery titanium dioxide and the aqueous solution of tin tetrachloride are impregnated in equal volumes, dried and roasted to obtain a tin-doped titanium dioxide carrier, the powdery titanium dioxide is in the rutile crystal form, and the concentration of the aqueous solution of tin tetrachloride is 0.5 g / mL, the drying condition is drying at 100°C for 24 hours, and the roasting condition is roasting at 800°C for 4 hours in an oxygen atmosphere;

[0029] (2) impregnate the tin-doped titanium dioxide carrier obtained in step (1) with an aqueous solution of ruthenium trichloride to obtain a catalyst through drying and roasting, the concentration of the aqueous solution of ruthenium trichloride is 0.1 g / mL, and the drying The condition is drying at 400° C. for 18 hours, and the calcination condition is 12 hours at 250° C. in an air atmosphere.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a high-temperature-resistant sintering catalyst for preparing chlorine by oxidizing hydrogen chloride and a preparation method of the high-temperature-resistant sintering catalyst. The high-temperature-resistant sintering catalyst is composed of a tin-doped titanium dioxide carrier and highly-dispersed ruthenium dioxide nanoparticle active components, and the preparation method comprises the following steps: (1) carrying out isopyknic impregnation on powdery titanium dioxide and a tin tetrachloride aqueous solution, and carrying out drying and roasting to obtain a tin-doped titanium dioxide carrier; and (2) subjecting the tin-doped titanium dioxide carrier obtained in the step (1) and a ruthenium trichloride aqueous solution to isopyknic impregnation, and carrying out drying and roasting so as to obtain the catalyst. The catalyst prepared by the invention is particularly suitable for reaction for preparing chlorine by oxidizing hydrogen chloride, and the titanium dioxide carrier is doped with tin, so that the action between active components of ruthenium dioxide nanoparticles and the carrier can be enhanced, and the high-temperature sintering resistance of the catalyst is improved.

Description

technical field [0001] The invention belongs to the field of catalysts, and in particular relates to a high-temperature-resistant sintering catalyst used for oxidizing hydrogen chloride to produce chlorine and a preparation method thereof. Background technique [0002] Chlorine gas and hydrogen chloride are important forms of chlorine and are also very important chemical raw materials. The conversion of hydrogen chloride to chlorine gas can realize the closed-circuit recycling of chlorine resources. It is the most effective method to deal with and recover by-product hydrogen chloride, and has formed a high degree of consensus in chlorine-related industries such as chlor-alkali, polyurethane, pesticides, pharmaceutical chemicals, and fertilizers. [0003] At present, the methods for converting hydrogen chloride into chlorine mainly include direct oxidation, electrolysis and catalytic oxidation (Deacon reaction process). Among them, the catalytic oxidation method uses oxygen ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01J23/62C01B7/04
CPCB01J23/626C01B7/04
Inventor 卢信清周黎旸林金元王树华刘玉培李思瑶马睿傅仰河涂高美许春慧王宁伟彭安娜贾冰朱伟东
Owner ZHEJIANG NORMAL UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com