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Catalyst using TiO2-coated carbon nano tube composite material as carrier and preparation method thereof

A technology of composite materials and carbon nanotubes, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of flue gas and catalyst mass transfer process bottlenecks, etc., to achieve easy industrial production and high yield The effect of high and low activation temperature

Inactive Publication Date: 2011-11-16
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the SCR system, the mass transfer process between the flue gas and the catalyst has always been a major bottleneck restricting the catalytic effect.

Method used

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  • Catalyst using TiO2-coated carbon nano tube composite material as carrier and preparation method thereof
  • Catalyst using TiO2-coated carbon nano tube composite material as carrier and preparation method thereof
  • Catalyst using TiO2-coated carbon nano tube composite material as carrier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 3.4g of carbon nanotubes were ultrasonically dispersed in 700mL of absolute ethanol, and ultrasonically oscillated for 30 minutes to prepare liquid A; 170g of tetrabutyl titanate was dissolved in 700ml of absolute ethanol, and 30mL of The mass concentration is 10% ammonium metavanadate (NH 4 VO 3 ) of the oxalic acid solution, ultrasonic vibration for 30 minutes to obtain liquid B; under the condition of ultrasonic oscillation, slowly add liquid A to liquid B, and after ultrasonic oscillation for 30 minutes, place the mixed solution in a 2000mL sealed reaction kettle, and seal the reaction kettle. Insulate at 230°C for 2 hours; after cooling to room temperature, filter, wash the product with deionized water until neutral, and vacuum dry at 60°C to obtain a black powder catalyst. active ingredient V 2 o 5 The mass content in the catalyst is 5%.

[0028] The sample was reacted with simulated industrial waste gas components in a fixed-bed reactor, and its catalytic p...

Embodiment 2

[0030] 3.4g of carbon nanotubes were ultrasonically dispersed in 700mL of absolute ethanol, and ultrasonically oscillated for 30 minutes to prepare liquid A; 170g of tetrabutyl titanate was dissolved in 700ml of absolute ethanol, and 5.7 The mL mass concentration is 10% ammonium metavanadate (NH 4 VO 3 ) of the oxalic acid solution, ultrasonic vibration for 30 minutes to obtain liquid B; under the condition of ultrasonic oscillation, slowly add liquid A to liquid B, and after ultrasonic oscillation for 30 minutes, place the mixed solution in a 2000mL sealed reaction kettle, and seal the reaction kettle. Insulate at 230°C for 2 hours; after cooling to room temperature, filter, wash the product with deionized water until neutral, and vacuum-dry at 60°C to obtain a black powder catalyst. active ingredient V 2 o 5 The mass content in the catalyst is 1%.

Embodiment 3

[0032] 3. 4g of carbon nanotubes were ultrasonically dispersed in 700mL of absolute ethanol, and ultrasonically oscillated for 30 minutes to prepare liquid A; 170g of tetrabutyl titanate was dissolved in 700ml of absolute ethanol, and 100mL of The mass concentration is 14% ammonium metavanadate (NH 4 VO 3 ) of the oxalic acid solution, ultrasonic vibration for 30 minutes to obtain liquid B; under the condition of ultrasonic oscillation, slowly add liquid A to liquid B, and after ultrasonic oscillation for 30 minutes, place the mixed solution in a 2000mL sealed reaction kettle, and seal the reaction kettle. Insulate at 230°C for 2 hours; after cooling to room temperature, filter, wash the product with deionized water until neutral, and vacuum-dry at 60°C to obtain a black powder catalyst. active ingredient V 2 o 5 The mass content in the catalyst is 20%.

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Abstract

The present invention discloses a catalyst using a TiO2-coated carbon nano tube composite material as a carrier and a preparation method thereof. The outer surface of a carbon nano tube is coated by TiO2 nanometer particles doped with an active component which is one or a plurality of V2O5, MoO3, MnO2 and WoO3 and is 1-20 percent by weight of the catalyst. The catalyst is prepared by adopting a solvent hot method, has simple process, high yield and easy industrialized production and has excellent effects on denitrating smoke and removing dioxin-related persistent organic pollutants.

Description

technical field [0001] The invention belongs to the field of catalysts, in particular to TiO 2 A catalyst coated with a carbon nanotube composite material as a carrier, a preparation method and an application thereof. Background technique [0002] Some factories, such as waste incineration plants, metal smelters, coal-fired power plants, etc., will produce two main toxic substances nitrogen oxides (NO X ) and dioxins (Dioxins, also known as PCDD / DFs). The former will cause a variety of environmental problems including photochemical smog, acid rain, etc.; the latter is persistent organic pollutants, including polychlorinated dibenzodioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs), these substances It accumulates in the human body through the food chain and causes great harm to the human body. All countries in the world have adopted laws and regulations and taken corresponding measures to strictly control them. [0003] In order to reduce the emission of dioxins i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/34B01J23/22B01J23/28B01J23/30B01J37/34B01D53/56B01D53/72B01D53/86
Inventor 聂安民杨杭生张孝彬樊孝玉邱发敏侯天峰田唯
Owner ZHEJIANG UNIV
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