Cobalt-load cerium manganese oxide catalyst and preparation method thereof

A technology of oxides and catalysts, applied in the direction of metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of pollutant enrichment, etc., and achieve simple and excellent processes Oxygen storage and release capacity, low cost effect

Active Publication Date: 2016-02-03
SHANGHAI NAT ENG RES CENT FORNANOTECH
6 Cites 15 Cited by

AI-Extracted Technical Summary

Problems solved by technology

In semi-enclosed spaces such as parking lots and tunnels, due to the limitation of natural ventilation, vehicle exhaust polluta...
View more

Abstract

The invention discloses preparation of a cobalt-load cerium manganese oxide catalyst. Cerium manganese oxide is prepared through an oxidization reduction method, then cobalt is loaded to the cerium manganese oxide through an equivalent-volume impregnation method, manganese oxide has good oxidization performance, cerium oxide has excellent oxygen storage and release capacity, cobalt oxide also has certain oxidization performance, the catalyst has good purifying efficiency on low-concentration nitric oxide, the conversation rate can be 96% at the temperature of 25 DEG C, long service life can also be kept, meanwhile raw materials for preparing the catalyst are easy to obtain, the technology is simple, cost is low, and industrial production can be achieved easily.

Application Domain

Metal/metal-oxides/metal-hydroxide catalysts

Technology Topic

Cobalt oxideManganese oxide +10

Examples

  • Experimental program(5)

Example Embodiment

[0015] Example 1:
[0016] Weigh 1.48 g of manganese chloride and 6.51 g of cerium nitrate and dissolve them in 100 ml of deionized water to form solution 1. 1.52 g of potassium permanganate was weighed and dissolved in 60 ml of deionized water to form solution 2. Add solution 2 dropwise to solution 1, continue stirring at room temperature for 24 hours, filter, wash, and dry the obtained solid in an oven at 50 °C overnight, and then calcinate at 300 °C for 3 hours to obtain cerium manganese oxide, denoted as Ce1- Mn-O x.
[0017] Weigh 0.120 g of cobalt nitrate and dissolve it in 2.80 ml of deionized water to form a cobalt solution, then add the cobalt solution dropwise to 1.00 g of Ce1-Mn-O x After immersion in an equal volume for 24 hours, it was placed in an oven at 60-80 °C to dry overnight, and then calcined at 300 °C for 3 hours to obtain a cobalt-supported cerium-manganese oxide catalyst, denoted as Co/Ce1-Mn-O x.
[0018] Weigh 0.200 g of the catalyst obtained above, feed the reaction gas at 25 ° C, and the gas composition is 10 ppm NO, 21% O 2 and balance gas N 2 ,, the total flow is 420mL/min, and the activity test results are: the purification rate reaches 89%, and the conversion rate remains above 70% within 150 minutes.

Example Embodiment

[0019] Example 2:
[0020] Compared with Example 1, the difference is that the quality of manganese chloride is 1.98 grams, the quality of cerous nitrate is 4.34 grams, and other material consumption and operating conditions are the same as Example 1, to obtain Co/Ce2-Mn-O x catalyst. The results of the activity test are: the purification rate reaches 92%, and the conversion rate remains above 70% within 290 minutes.

Example Embodiment

[0021] Example 3:
[0022] Compared with Example 1, the difference is that the quality of manganese chloride is 2.23 grams, the quality of cerous nitrate is 3.26 grams, other material consumption and operating conditions are the same as Example 1, and obtain Co/Ce3-Mn-O x catalyst. The results of the activity test are: the purification rate reaches 96%, and the conversion rate remains above 70% within 480 minutes.

PUM

no PUM

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.

Similar technology patents

Image sensor and method of manufacturing the same

InactiveUS20110128423A1simple processrealistic image
Owner:SAMSUNG ELECTRONICS CO LTD

Treating method for oily sludge

InactiveCN106957136AThe treatment method is simple and effectiveSimple process
Owner:安徽省通源环境节能股份有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products