Unlock instant, AI-driven research and patent intelligence for your innovation.

Ruthenium-based oxide catalyst and preparation method and application thereof

A catalyst and oxide technology, which is applied in the field of ruthenium-based oxide catalysts and preparation, can solve the problems of easy chloride ion poisoning, difficult to oxidize CO, gas pollution, etc., and achieve the effect of small pore size, simple preparation process and high specific surface area

Pending Publication Date: 2022-02-08
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these traditional methods for preparing Ru-based catalysts have disadvantages such as high energy consumption, gas pollution, easy chloride ion poisoning in the catalyst, and difficulty in completely oxidizing CO.

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
  • Ruthenium-based oxide catalyst and preparation method and application thereof
  • Ruthenium-based oxide catalyst and preparation method and application thereof
  • Ruthenium-based oxide catalyst and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Weigh 49.60g of CeO 2 Weigh 200mL deionized water with a graduated cylinder, mix in a beaker and stir for 2h;

[0028] (2) Add 19 mL of 0.1 mol / L RuCl dropwise under dark conditions 3 aqueous solution, and stirred for 30min;

[0029] (3) Add dropwise the NaOH aqueous solution of 0.1mol / L under the condition of avoiding light, stop dripping when the pH of the solution=7, and continue to stir for 30min, then filter, wash and suction the mixed solution after aging for 3h in the dark Dry at ℃ for 17h;

[0030] (4) After drying, the powder was washed with water several times, and the solid powder was added into a graduated cylinder to weigh 200 mL of water, mixed, stirred for 10 minutes, and then kept in the dark for 30 minutes. 1.5 mL of supernatant and 1 mL of AgNO 3 The aqueous solution (0.6mol / L) was shaken and mixed, and after no white precipitate appeared, it was dried at 80°C to obtain the catalyst precursor;

[0031] (5) The catalyst precursor was mechanical...

Embodiment 2

[0037] (1) Weigh 49.50g of CeO2 Weigh 200mL deionized water with a graduated cylinder, mix in a beaker and stir for 2h;

[0038] (2) Add 38mL of 0.1mol / L RuCl dropwise under dark conditions 3 aqueous solution, and stirred for 30min;

[0039] (3) Add dropwise the NaOH aqueous solution of 0.1mol / L under the condition of avoiding light, stop dripping when the pH of the solution=7, and continue to stir for 30min, then filter, wash and suction the mixed solution after aging for 3h in the dark Dry at ℃ for 17h;

[0040] (4) After drying, the powder was washed with water several times, and the solid powder was added into a graduated cylinder to weigh 200 mL of water, mixed, stirred for 10 minutes, and then kept in the dark for 30 minutes. 1.5 mL of supernatant and 1 mL of AgNO 3 The aqueous solution (0.6mol / L) was shaken and mixed, and after no white precipitate appeared, it was dried at 80°C to obtain the catalyst precursor;

[0041] (5) The catalyst precursor was mechanically b...

Embodiment 3

[0046] (1) Weigh 47.5g of CeO 2 Weigh 200mL deionized water with a graduated cylinder, mix in a beaker and stir for 2h;

[0047] (2) Add 188mL of 0.1mol / L RuCl dropwise under the condition of avoiding light 3 aqueous solution, and stirred for 30min;

[0048] (3) Add dropwise the NaOH aqueous solution of 0.1mol / L under the condition of avoiding light, stop dripping when the pH of the solution=7, and continue to stir for 30min, then filter, wash and suction the mixed solution after aging for 3h in the dark Dry at ℃ for 17h;

[0049] (4) After drying, the powder was washed with water several times, and the solid powder was added into a graduated cylinder to weigh 200 mL of water, mixed, stirred for 10 minutes, and then kept in the dark for 30 minutes. 1.5 mL of supernatant and 1 mL of AgNO 3 The aqueous solution (0.6mol / L) was shaken and mixed, and after no white precipitate appeared, it was dried at 80°C to obtain the catalyst precursor;

[0050] (5) The catalyst precursor ...

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

PropertyMeasurementUnit
Concentrationaaaaaaaaaa
Concentrationaaaaaaaaaa
Login to View More

Abstract

The invention discloses a ruthenium-based oxide catalyst and a preparation method and application thereof. The preparation method comprises the steps" slowing adding a RuCl3 solution into a CeO2 suspension, slowing adding an alkali solution into the mixed solution, stopping adding when the pH of the solution is equal to 7, filtering and drying after aging and obtaining solid powder; washing for multiple times, adding into water, mixing and stirring, and standing in a dark place; taking supernate, adding an AgNO3 aqueous solution into the supernate, oscillating and mixing, and drying after no white precipitate appears, so as to obtain a catalyst precursor; carrying out ball milling on the catalyst precursor to obtain a ruthenium-based oxide catalyst; or ball-milling the catalyst precursor, roasting in the air atmosphere, tabletting and forming to obtain the ruthenium-based oxide catalyst, the ruthenium-based oxide catalyst is used for catalyzing CO oxidation reaction. Compared with the prior art, no organic solvent is added in the preparation process, the preparation process is simple, and the preparation method is suitable for large-scale industrial production; the catalyst can be used for catalyzing CO oxidation reaction and has good CO oxidation catalyzing capability at low temperature.

Description

technical field [0001] The invention relates to the field of catalysts, in particular to a ruthenium-based oxide catalyst, its preparation method and application. Background technique [0002] As a common toxic gas, CO will not only seriously threaten human health, but also cause great harm to the natural environment. Therefore, how to completely eliminate CO is an urgent problem that current researchers need to solve. Currently oxidizes CO to CO 2 It is considered as one of the effective strategies to eliminate CO. The catalytic oxidation of CO plays an important role in many aspects of industry, military affairs and environmental protection. The selection of catalyst is one of the core parts. The selection of a suitable catalyst is crucial to the catalytic oxidation of CO. Therefore, finding and preparing a catalyst for CO removal is the key One of the key points of field research. [0003] Precious metal catalysts have the characteristics of strong adsorption, strong a...

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): B01J23/63B01D53/86B01D53/62
CPCB01J23/63B01D53/864Y02A50/20
Inventor 张磊高志贤金石山庆绍军张财顺
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY