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

Multicomponent catalyzer for ammonia catalytic combustion and preparation method thereof

A catalyst and ammonia combustion technology, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as no relevant reports on ammonia

Inactive Publication Date: 2008-05-07
TIANJIN XINHE CHUANGZHAN HIGH & NEW TECH DEV
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the catalytic clean combustion method of amm

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

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0017] The present invention is used for the preparation method of the multiple metal oxide catalyst of ammonia catalytic combustion, comprises:

[0018] Control a certain concentration of silver ion aqueous solution, such as 5-45% (weight percent) silver nitrate, silver chlorate or silver acetate solution, under certain temperature conditions, slowly add copper ions, iron ions, bismuth ions, ammonium ion, manganese ion and potassium ion mixed solution, these metal ion solutions are selected from their nitrate, sulfate and acetate and other solutions with good solubility, after the above solution is stirred and mixed evenly, slowly added to hypochlorite and In the mixed solution of lye, the reaction is carried out, and at this time, brown-yellow active composite oxide microcrystals are precipitated first, and then quickly transformed into black precipitates. Wherein, the hypochlorite may be sodium hypochlorite, lithium hypochlorite, calcium hypochlorite or a mixture thereof in...

Embodiment 1

[0029]After absorbing 21 grams of chlorine gas with 80 ml of 30% NaOH, 66 grams of sodium hydroxide was added, and the precipitated sodium chloride was filtered out to obtain a mixed solution of sodium hypochlorite and sodium hydroxide. Add 100ml of reaction liquid containing 1mol / L silver nitrate, 0.3mol / L iron nitrate and 0.3mol / L manganese nitrate to the solution, control the above reaction temperature to 25-35°C, after fully reacting for 60 minutes, inject 20ml Saturated NaOH solution was isolated by filtration to obtain the crude product. The crude product was filtered and dried, washed with 0.5 mol / L, 0.1 mol / L NaOH and pure water successively until the pH value of the washing liquid was between 8-10, and the obtained products were vacuum-dried at 60°C for 6 hours and calcined at 350° C. for 8 hours, the multi-element metal oxide catalyst product of the present invention is obtained.

[0030] In the furnace, when the catalyst loading is 330 grams (bed packing height 12c...

Embodiment 2

[0032] 80ml of 30% NaOH absorbs 20 grams of chlorine at a temperature of 15-30°C, then adds 50 grams of sodium hydroxide, and filters out the precipitated sodium chloride to obtain a mixed solution of sodium hypochlorite and sodium hydroxide. Weigh 3 grams of AgNO 3 , Cu(NO 3 ) 2 , Bi(NO 3 ) 3 、KNO 3 , Mn(NO 3 ) 2 and Fe(NO 3 ) 3 For solid material, add 1ml of 3M HNO 3 solution, and then it was mechanically ground and mixed, and dissolved in 100ml of water to obtain a reaction raw material solution. Add the above mother liquor to the previous mixed solution of sodium hypochlorite and sodium hydroxide in small quantities under strong stirring, the reaction temperature is controlled at 25-40°C, and the reaction time is 60 minutes to obtain black microcrystalline precipitates. After standing for stratification, the precipitate was transferred to a glass filter funnel, rinsed with 1% NaOH and pure water, vacuum-dried with a suction filter bottle, dried in a vacuum oven a...

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 relates to ammonia catalyzed and burnt multi-element metallic oxide catalyst and a preparation method thereof. The catalyst mainly comprises metal elements, namely, Mn, Fe, Ag, Cu, K and / or the oxide of Bi. The preparation method comprises the following steps: the mixed aqueous solution including silver, the Mn, the Fe, the Ag, the Cu, the K and / or the bismuth ion is mixed with the mixed liquid of hypochlorite and alkali liquid for reaction to form oxide precipitate, and the precipitate is dried and calcined to obtain the multi-element catalyst of the invention. The multi-element catalyst prepared by the method has the advantages of complete crystal form, high purity, narrow distribution of particle diameter, high catalytic activity and long service life and so on, and is particularly suitable for the catalytic combustion of the ammonia. Meanwhile the invention relates to the application of the multi-element catalyst in the catalytic combustion of the ammonia, develops the purpose of taking the ammonia as fuel, and solves the problems of the shortage of fuel and the environmental pollution brought about by using carbonaceous fuel existing at the present.

Description

technical field [0001] The present invention relates to multiple catalysts. More specifically, the present invention relates to a multi-component catalyst for catalytic combustion of ammonia and a preparation method thereof. At the same time, it relates to the application of the multi-component catalyst of the invention for ammonia as a fuel to catalyze clean combustion in air. Background technique [0002] As we all know, nitrogen is the most abundant element in the atmosphere, accounting for more than 78% of the entire atmosphere. It is usually expressed as elemental nitrogen or +5-valent NO 3 - And -3 valent ammonia (NH3) in the form of existence. Since the industrialization of ammonia production in the last century, the synthetic ammonia industry has become a pillar industry of inorganic compounds that occupies an important position in the national economy such as sulfuric acid and chlor-alkali. Ammonia and its derivatives are very common inorganic nitrogen fertilize...

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): B01J23/89B01J23/889C10L3/00
Inventor 潘军青孙艳芝王远林早
Owner TIANJIN XINHE CHUANGZHAN HIGH & NEW TECH DEV
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