Catalyst and its preparation method

A technology of catalysts and additives, which is applied in the field of catalysts for eliminating volatile organic compounds and its preparation, can solve the problems of SOx secondary pollution, high price, and unfriendly environment, and achieve high catalytic performance, high reactivity, and low content. Effect

Active Publication Date: 2022-05-17
金华铂锐催化科技有限公司 +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the Nb on the catalyst support 2 o 5 Expensive, and V 2 o 5 It is an environmentally unfriendly substance, which affects the promotion and use of catalysts
Chinese patent CN110898834A discloses a catalyst for eliminating volatile organic compounds and its preparation method, Pt-MO 3 / Nb 2 o 5 -Al 2 o 3 -CeVO 4 The catalyst has high reactivity to benzene, toluene, ethyl acetate, acetone, n-hexanol, and ether, but the catalyst precursor uses expensive platinum (II) acetylacetonate and molybdenum acetylacetonate
However, due to the sulfate radical (SO 4 2- ) is easy to decompose at high temperature, which not only causes secondary pollution of SOx, but also affects the service life of the catalyst

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Catalyst and its preparation method
  • Catalyst and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1)V 2 o 5 - Preparation of HY-ZSM-5 vector

[0019] Follow V 2 o 5 , HY and ZSM-5 quality are V 2 o 5 This is calculated as 1 g of vanadyl oxalate, 4 g of HY molecular sieve and 10 g of ZSM-5 molecular sieve. Weigh vanadyl oxalate (VOC 2 o 4 ·5H 2 O) 2.69g was dissolved in 30ml of water, then 4g of HY molecular sieve and 10g of ZSM-5 molecular sieve were added, after mixing evenly, moisture was removed in a rotary evaporator at 100°C, and then roasted at 500°C in a muffle furnace for 4 hours to obtain V 2 o 5 - HY-ZSM-5 mixture.

[0020] (2)V 2 o 5 -N-butylamine treatment on the surface of HY-ZSM-5 carrier

[0021] Weigh 1g of n-butylamine and add it to 100ml of water, then add 14g of the above V 2 o 5 - The HY-ZSM-5 mixture was soaked for 1 hour, then the liquid was filtered off and dried in an oven at 80°C for 4 hours. V obtained by n-butylamine treatment 2 o 5 - HY-ZSM-5 vector.

[0022] (3) Pt / V 2 o 5 -Preparation of HY-ZSM-5 catalyst

[0023]...

Embodiment 2

[0027] (1)V 2 o 5 - The preparation of the HY-ZSM-5 carrier is the same as in Example 1.

[0028] (2)V 2 o 5 - The n-butylamine treatment on the surface of the HY-ZSM-5 carrier is the same as in Example 1.

[0029] (3) Pt / V 2 o 5 -Preparation of HY-ZSM-5 catalyst

[0030] n-Butylamine-treated V according to Pt loading 2 o 5 -0.3wt% of HY-ZSM-5 carrier, weigh 1g of platinum nitrate aqueous solution containing 0.03g of metal Pt, add water and dilute to 20ml, then add n-butylamine-treated V 2 o 5 - HY-ZSM-5 carrier 10g, remove moisture in a rotary evaporator at 100°C, then put it into a tube furnace, feed in an oxygen-nitrogen mixture containing 2% oxygen, and raise the temperature to 10°C / min. 500°C, after holding for 4 hours, switch the air and continue roasting for 4 hours, then reduce the temperature to 250°C and introduce 5000mg / m 3 The air of butyl acetate activated the catalyst for 12 hours to obtain 0.3Pt / V 2 o 5 - HY-ZSM-5 catalyst.

[0031] (4) Catalyst pe...

Embodiment 3

[0033] (1)V 2 o 5 - The preparation of the HY-ZSM-5 carrier is the same as in Example 1.

[0034] (2)V 2 o 5 - The n-butylamine treatment on the surface of the HY-ZSM-5 carrier is the same as in Example 1.

[0035] (3) Pt / V 2 o 5 -Preparation of HY-ZSM-5 catalyst

[0036] n-Butylamine-treated V according to Pt loading 2 o 5 -0.5wt% of HY-ZSM-5 carrier, weigh 1g of platinum nitrate aqueous solution containing 0.05g metal Pt, add water and dilute to 20ml, then add n-butylamine-treated V 2 o 5 - HY-ZSM-5 carrier 10g, remove moisture in a rotary evaporator at 100°C, then put it into a tube furnace, feed in an oxygen-nitrogen mixture containing 2% oxygen, and raise the temperature to 10°C / min. 500°C, after holding for 4 hours, switch the air and continue roasting for 4 hours, then reduce the temperature to 250°C and introduce 5000mg / m 3 The air of butyl acetate activated the catalyst for 12 hours to obtain 0.5Pt / V 2 o 5 - HY-ZSM-5 catalyst.

[0037] (4) Catalyst perfo...

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 application discloses a catalyst and a preparation method. The catalyst is composed of a carrier, an active component and an auxiliary agent. The carrier is a mixture of HY molecular sieve and HZSM-5 molecular sieve; the active component is Pt; the promoter is V 2 o 5 . The present invention also provides a method for preparing a catalyst. The catalyst provided by the present invention has the following beneficial effects: when the catalyst is used for the purification of volatile organic waste gas, it can be carried out in a lower temperature range, and ethyl acetate, benzene, n-hexane , cyclohexane have high reactivity, and the catalyst performance can be adjusted by the content of noble metal platinum.

Description

technical field [0001] The invention relates to a chemical catalyst and a preparation method thereof, in particular to a catalyst for eliminating volatile organic compounds and a preparation method thereof. Background technique [0002] Volatile organic pollutants (VOCs) are important precursors for the formation of photochemical smog and ozone, and the reduction of VOCs emission has become the research focus of researchers in the field of environmental engineering. There are many ways to treat VOCs. The catalytic combustion method is considered to be one of the most effective methods for eliminating volatile organic compounds due to its advantages of relatively low processing temperature, low energy consumption, and not easy to produce secondary pollution. [0003] Chinese patent CN109821536A discloses a Pt-V for complete oxidation of propane 2 o 5 / SnO 2 -Nb 2 o 5 The catalyst and its preparation method, the catalyst has better catalytic activity and stability to prop...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/80B01D53/86B01D53/72
CPCB01J29/80B01D53/8668B01J29/48B01J29/166Y02P20/52
Inventor 金凌云
Owner 金华铂锐催化科技有限公司
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

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap