Title:
FORMALDEHYDE REMOVAL CATALYST AND PREPARATION METHOD THEREFOR, FORMALDEHYDE REMOVAL SEMI-FINISHED ASSEMBLY AND PREPARATION METHOD THEREFOR, AND FILTER SCREEN ASSEMBLY
Document Type and Number:
WIPO Patent Application WO/2023/050724
Kind Code:
A1
Abstract:
The present disclosure provides a formaldehyde removal catalyst and a preparation method therefor, a formaldehyde removal semi-finished assembly and a preparation method therefor, and a filter screen assembly. The formaldehyde removal catalyst comprises: manganese dioxide, wherein the pore size of the manganese dioxide is d1, and d1 satisfies that: 5 nm ≤ d1 ≤ 50 nm. The formaldehyde removal catalyst according to a specific embodiment of the present disclosure comprises a manganese dioxide catalyst, which is nanoscale particles, wherein the pore size of manganese dioxide is d1, and d1 satisfies that: 5 nm ≤ d1 ≤ 50 nm. The formaldehyde removal catalyst can be used for catalyzing the oxidation of formaldehyde at room temperature, and the internal pore structure thereof increases the specific surface area of the catalyst, thereby facilitating adsorption and anchoring of formaldehyde molecules in catalyst pores, and improving the oxidative decomposition performance of formaldehyde.
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Inventors:
ZHANG YONG (CN)
WANG LIREN (CN)
WANG JI (CN)
PI XIAOCHUN (CN)
FENG QINGSHAN (CN)
WANG LIREN (CN)
WANG JI (CN)
PI XIAOCHUN (CN)
FENG QINGSHAN (CN)
Application Number:
PCT/CN2022/079481
Publication Date:
April 06, 2023
Filing Date:
March 07, 2022
Export Citation:
Assignee:
FREUDENBERG APOLLO FILTRATION TECH CO LTD (CN)
International Classes:
B01D53/72; B01J23/34; B01D53/86; B01J35/02; B01J35/10
Foreign References:
| CN102107909A | 2011-06-29 | |||
| CN102872715A | 2013-01-16 | |||
| CN113797925A | 2021-12-17 | |||
| CN104190251A | 2014-12-10 |
Attorney, Agent or Firm:
JW&PARTNERS (CN)
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