Metal carrier loaded catalyst for purifying formaldehyde at room temperature

Abstract

The invention relates to a metal carrier loaded catalyst for purifying formaldehyde at a room temperature. The catalyst comprises a metal carrier, porous inorganic material loaded on the metal carrier, noble metal active components loaded on the porous inorganic material and an additive, wherein the metal carrier is aludirome, the noble metal is any one or a mixture of at least two of platinum, rhodium, palladium, gold or silver and the additive is any one or a mixture of at least two of alkali metal simple substance, alkali metal compound, alkaline earth metal simple substance or alkaline earth metal compound. By the metal carrier load catalyst for purifying formaldehyde at the room temperature, most or all formaldehyde can be converted into carbon dioxide and water; by-products such as formic acid, carbon monoxide and methyl formate are not generated; and the formaldehyde conversion rate can be up to 100%.

Description

technical field [0001] The invention relates to a catalyst, in particular to a metal carrier-loaded catalyst used for purifying formaldehyde at room temperature. Background technique [0002] With the improvement of people's material and cultural living standards, interior decoration has become fashionable, but indoor air pollution is also becoming more and more serious. Formaldehyde is one of the most typical and serious pollutants in the indoor environment. The concentration limit of formaldehyde pollutants in indoor air stipulated by my country's national standards is 0.08mg / m 3 . At present, the concentration of formaldehyde in the indoor environment in my country is very serious. According to the sampling survey conducted by the National Center for Disease Control and Prevention, more than 60% of newly renovated residential buildings in my country have excessive formaldehyde concentrations, which has caused great harm to people's health. With the improvement of envir...

AI Technical Summary

Problems solved by technology

However, the catalyst using cordierite honeycomb ceramics as a carrier has the problem of weak bonding strength between the carrier and the active component during use. Especially during long-term use, the catalyst has low mechanical resistance and serious powder shedding, which leads to catalyst Long-term activity instability

In addition, the catalyst with cordierite honeycomb ceramics as the carrier has high wind resistance and low catalytic efficiency during the air purification process, and the energy consumption caused by assembling the purification equipment is high