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A kind of composite catalyst for catalytic burning ethyl acetate and its preparation method and application

An ethyl acetate, catalytic combustion technology, applied in combustion methods, physical/chemical process catalysts, combustion types, etc., can solve problems such as low low temperature activity, and achieve the effects of low cost, improved activity, and reduced oxide content

Active Publication Date: 2020-07-17
XIAN ORIGIN CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Among non-noble metal oxide materials, the perovskite type and hexaaluminate catalysts are more stable than noble metals, but their low-temperature activity is usually low, so they are usually used for catalytic combustion of high-concentration methane, toluene, etc. reaction

Method used

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  • A kind of composite catalyst for catalytic burning ethyl acetate and its preparation method and application
  • A kind of composite catalyst for catalytic burning ethyl acetate and its preparation method and application

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Embodiment 1

[0025] This embodiment is used for catalytic combustion to ethyl acetate with composite catalyst with Al 2 o 3 As the carrier, the noble metal Pd is used as the active component, and the mass of the metal Pd is the Al 2 o 3 0.2% by mass to load in Al 2 o 3 The composite non-noble metal oxide on the surface is used as an auxiliary agent, and the composite non-noble metal oxide is composed of CeO 2 and SnO 2 Composite, the structural formula is CeO 2 -SnO 2 , the CeO 2 The mass of the Al 2 o 3 5% by mass of the SnO 2 The mass of the Al 2 o 3 4% of mass;

[0026] The preparation method of described composite catalyst comprises the following steps:

[0027] Step 1. Take a 500mL clean beaker, add 300mL deionized water, and then weigh 0.63g Ce(NO 3 ) 3 ·6H 2 O and 0.46g SnCl 4 , after stirring evenly, add 10mL of nitric acid with a mass concentration of 68%, then place it in an ultrasonic oscillator for ultrasonic vibration for 0.5h, and then add 5g of Al to the be...

Embodiment 2

[0033] This embodiment is used for catalytic combustion to ethyl acetate with composite catalyst with Al 2 o 3 As the carrier, the noble metal Pd is used as the active component, and the mass of the metal Pd is the Al 2 o 3 0.2% by mass to load in Al 2 o3 The composite non-noble metal oxide on the surface is used as an auxiliary agent, and the composite non-noble metal oxide is composed of CeO 2 and SnO 2 Composite, the structural formula is CeO 2 -SnO 2 , the CeO 2 The mass of the Al 2 o 3 5% by mass of the SnO 2 The mass of the Al 2 o 3 8% of mass;

[0034] The preparation method of described composite catalyst comprises the following steps:

[0035] Step 1. Take a 500mL clean beaker, add 300mL deionized water, and then weigh 0.63g Ce(NO 3 ) 3 ·6H 2 O and 0.92 g SnCl 4 , after stirring evenly, add 10mL of nitric acid with a mass concentration of 68%, then place it in an ultrasonic oscillator for ultrasonic vibration for 0.5h, and then add 5g of Al to the bea...

Embodiment 3

[0041] This embodiment is used for catalytic combustion to ethyl acetate with composite catalyst with Al 2 o 3 As the carrier, the noble metal Pd is used as the active component, and the mass of the metal Pd is the Al 2 o 3 0.5% by mass to load in Al 2 o 3 The composite non-noble metal oxide on the surface is used as an auxiliary agent, and the composite non-noble metal oxide is composed of CeO 2 and SnO 2 Composite, the structural formula is CeO 2 -SnO 2 , the CeO 2 The mass of the Al 2 o 3 5% by mass of the SnO 2 The mass of the Al 2 o 3 12% of mass;

[0042] The preparation method of described composite catalyst comprises the following steps:

[0043] Step 1. Take a 500mL clean beaker, add 300mL deionized water, and then weigh 0.63g Ce(NO 3 ) 3 ·6H 2 O and 1.38 g SnCl 4 , after stirring evenly, add 10mL of nitric acid with a mass concentration of 68%, then place it in an ultrasonic oscillator for ultrasonic vibration for 0.5h, and then add 5g of Al to the ...

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Abstract

The invention provides a composite catalyst for performing catalytic combustion on acetic ether. According to the catalyst, Al2O3 is taken as a carrier; metal Pd is taken as an active component; the mass of metal Pd is 0.1 to 0.5 percent of that of Al2O3; composite non-noble metal oxide is taken as an assistant and is formed by compounding CeO2 and SnO2, with a structural formula being CeO2-SnO2;the mass of CeO2 is 0.5 percent of that of Al2O3; the mass SnO2 is 4 to 20 percent of that of Al2O3. The invention further provides a method for preparing the catalyst and a method for performing catalytic combustion on acetic ether through the catalyst. The catalyst takes non-noble metal oxide as an assistant, and the assistant can increase the content of active oxygen on the surface of the catalyst and improve the activity of the catalytic, has high heat stability, and can rapidly and efficiently eliminate acetic ether in industrial tail gas.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a composite catalyst for catalytic combustion of ethyl acetate and its preparation method and application. Background technique [0002] Ethyl acetate is a volatile organic compound that is extremely harmful to the ecological environment and human health. It is widely produced in petrochemical, printing, pharmaceutical and other production processes. In recent years, my country has successively promulgated a number of regulations to help the treatment of volatile organic compounds (VOCs). The catalysts usually used for the catalytic combustion of ethyl acetate are mainly divided into two categories: precious metals such as Pt, Pd, Rh, etc., and non-precious metal oxides Such as calcium iron ore, hexaaluminate, composite metal oxide, etc. Among them, although noble metal catalysts have good low-temperature activity, they are easily deactivated in the presence of wate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/63F23G7/07
CPCB01J23/002B01J23/63B01J2523/00F23G7/07F23G2209/14B01J2523/31B01J2523/3712B01J2523/43
Inventor 刘程李飞仵静李潇侯鑫满雪黄伟庞菊玲
Owner XIAN ORIGIN CHEM TECH
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