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A vanadium oxide nanotube denitration catalyst with anti-poisoning performance and preparation method thereof

A technology of denitrification catalyst and vanadium oxide, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, chemical instrument and method, etc., can solve the problem of less research on anti-poisoning performance of denitrification catalyst, Achieve excellent NOx catalytic reduction performance, excellent denitrification activity, and good anti-poisoning performance

Active Publication Date: 2018-09-11
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, a large number of patents at home and abroad have disclosed various types of SCR denitration catalysts and their synthesis methods, but there are few studies on the anti-poisoning performance of denitration catalysts.

Method used

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  • A vanadium oxide nanotube denitration catalyst with anti-poisoning performance and preparation method thereof
  • A vanadium oxide nanotube denitration catalyst with anti-poisoning performance and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Preparation of vanadium oxide nanotubes: the molar ratio of raw materials is V 2 o 3 : absolute ethanol: water: laurylamine = 1:20:50:5. will V 2 o 3 Add it into the absolute ethanol solution together with dodecylamine, stir and dissolve for 1 hour. Then add deionized water to it, and continue to stir for 6 hours to obtain a uniformly mixed suspension; then pour it into a polytetrafluoro-lined hydrothermal kettle at 150°C for 24 hours, and the filling degree of the hydrothermal kettle is 70 %; The precipitate after the hydrothermal treatment is first transferred to the absolute ethanol solution and stirred for 6 hours to remove organic matter and impurities, then washed with water, filtered, and dried at 60°C. The surface morphology of the prepared vanadium-titanium oxide nanotubes is as follows figure 1 shown.

[0046] Catalyst preparation: Add 1 g of cerium nitrate hexahydrate and 2 g of ammonium tungstate to 100 ml of deionized water, stir and dissolve for 1 hou...

Embodiment 2

[0050] Preparation of vanadium oxide nanotubes: the molar ratio of raw materials is V 2 o 4 : absolute ethanol: water: cetylamine = 1:30:70:4. will V 2 o 4 Add hexadecylamine into anhydrous ethanol solution, stir and dissolve for 1 hour. Then add deionized water to it, and continue to stir for 6 hours to obtain a well-mixed suspension; then pour it into a polytetrafluoro-lined hydrothermal kettle for 18 hours at 180°C, and the filling degree of the hydrothermal kettle is 60 %; The precipitate after hydroheating was first transferred to absolute ethanol solution and stirred for 6 hours to remove organic matter and impurities, then washed with water, filtered, and dried at 60°C.

[0051] Catalyst preparation: Add 2 grams of niobium oxalate into 100ml of deionized water, stir and dissolve for 1 hour, then add 4g of vanadium oxide nanotubes into it and continue stirring for 6 hours, then dry at 80°C and burn at 450°C The finished catalyst product was obtained in 4 hours.

[...

Embodiment 3

[0055] Preparation of vanadium oxide nanotubes: the molar ratio of raw materials is V 2 o 5 : absolute ethanol: water: octadecylamine = 1:40:80:10. will V 2 o 5 Add octadecylamine into anhydrous ethanol solution, stir and dissolve for 1 hour. Then add deionized water to it, and continue to stir for 6 hours to obtain a uniformly mixed suspension; then pour it into a polytetrafluoro-lined hydrothermal kettle for 36 hours at 160°C, and the filling degree of the hydrothermal kettle is 70 %; The precipitate after hydroheating was first transferred to absolute ethanol solution and stirred for 8 hours to remove organic matter and impurities, then washed with water, filtered, and dried at 80°C.

[0056] Catalyst preparation: Add 1 g of ferric nitrate nonahydrate and 2 g of ammonium molybdate into 100 ml of deionized water, stir and dissolve for 1 hour, then add 4 g of vanadium oxide nanotubes into it and continue stirring for 6 hours. Dry it and burn it at 500°C for 3 hours to ob...

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Abstract

The invention discloses a vanadium oxide nanotube denitration catalyst with anti-poisoning performance and a preparation method thereof. The catalyst includes a carrier, an active material loaded on the carrier and a catalytic assistant, the carrier is a vanadium oxide nanotube, and the active The substance is at least one of the oxides of cerium, niobium, iron, copper, chromium, cobalt and manganese, and the catalytic promoter is the oxide of molybdenum or tungsten. The catalyst of the invention has good inhibitory effect on the poisoning effect of phosphate, heavy metal, alkali metal and alkaline earth metal.

Description

technical field [0001] The invention relates to the technical field of air pollutant control and treatment, in particular to a vanadium oxide nanotube destocking catalyst with excellent anti-poisoning performance and a preparation method thereof. Background technique [0002] Nitrogen oxides (NO x ) is a major air pollutant, which has a serious impact on human health and the ambient atmosphere. NO x The harm to the human body is mainly damage to the respiratory tract, and long-term exposure can cause neurasthenia syndrome and chronic respiratory inflammation; in addition, nitrogen oxides are one of the important precursors for ozone formation, and are also responsible for the formation of regional fine particle pollution and major cause of smog. The severe smog in my country in early 2013 is closely related to the high concentration of nitrogen oxides in the atmosphere. NO x It mainly comes from the combustion process and industrial production process, mainly including ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/30B01J23/22B01J23/881B01J23/888B01J23/26B01J23/34B01J23/887B01D53/86B01D53/56
CPCB01D53/565B01D53/8628B01D2258/06B01J23/002B01J23/22B01J23/26B01J23/30B01J23/34B01J23/881B01J23/8877B01J23/888B01J2523/00B01J2523/3712B01J2523/55B01J2523/69B01J2523/56B01J2523/68B01J2523/842B01J2523/17B01J2523/67B01J2523/72B01J2523/845
Inventor 吴忠标王芃芦王海强陈思
Owner ZHEJIANG UNIV
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