CN1252324A - Preparation and application of catalyst - Google Patents

Abstract

The catalyst has active matter comprising one or several of the oxides of Ni, Mo, Fe, V, Cr, Mn, Co, Cu, Ag and noble metal. It can absorb and decompose matter with bad smell effectively, and may be used in eliminating domestic bad smell and for fruit and vegetable freshness keeping.

Description

A kind of catalyst manufacture method and application thereof

The present invention is catalyst and application thereof, and this catalyst can remove stink substance below room temperature.Can be widely used in household electrical appliance and the interior deodorizing of toilet, kitchen, room and automobile such as refrigerator, air-conditioning, air purifier, cooking device.

Chang Yong deodour method mostly was physisorphtion in the past.The main porous material physical adsorptions such as active carbon, zeolite that lean on are removed stink.Because there is saturation problem in physical absorption, need often to change adsorbent or regeneration.And stink substance is difficult to remove fully.And ozone concentration is wayward in the ozone deodorization process, and the life-span of ozone generator also is a problem.

Purpose of the present invention will overcome the prior art deficiency exactly, makes deodoriser have high odor removal efficient and long service life below room temperature, makes it to be used effectively easily.

The objective of the invention is to realize by following measure.

In air oxygen in the presence of, Ni, Mo, Fe, V, Cr, Mn, Co, Cu, Ag and metal oxide containing precious metals have activity to removing stink substance sulfide and amine.If make it to carry on a shoulder pole on the carrier that is held in high-ratio surface then active can the raising greatly.The ratio of each component in catalyst can be in 0.05～99% range.Carrier can be Al ₂O ₃, SiO ₂, TiO ₂Or by Al ₂O ₃With SiO ₂Natural or synthetic material's matter of forming.

The shape of finished product catalyst can be multiple shapes such as cellular, tabular, netted, granular, powdery, and wherein the effect that geometrical surface is big is better.

The preparation method of catalyst can have multiple, can be with general mixed method, infusion process or coprecipitation etc.Can in the oxide of Ni, Mo, Fe, V, Cr, Mn, Co, Cu, AS, noble metal and Si, Al one or more are mixed evenly, and adding adhesive, compression moulding, high-temperature firing then, also available infusion process, carrier is immersed in the salting liquid of selected above-mentioned transition metal, high temperature makes it to decompose and forms again, also can invest on the carrier being coated with after the active material co-precipitation.

Effect of the present invention is described as follows:

1, with the catalyst that makes in 20 ℃, trimethylamine or methyl mercaptan concentration are under the situation of 100ppm in the air, put into the glass container of 30L, make cross-ventilation with fan, record in time to change, trimethylamine or methyl mercaptan survival rate, result such as table 1:

Table one

Time (min)	????0	????5	????10	????20	????30
						Trimethylamine survival rate %	????100	????40.2	????21	????10.5	????2
Methyl mercaptan survival rate %	????100	????45	????23	????9.7	????1.5

2, with the catalyst that makes in 20 ℃, put into the glass container of 30L, contain the ethene of 200ppm in the container, measure ethylene concentration over time, result such as table 2:

Table two

Time (h)	????0	????24
			Ethylene concentration (ppm)	????200	????2.05

The result shows, this patent catalyst can at room temperature efficiently be removed typical case's life stink substances such as trimethylamine, methyl mercaptan, thereby removal refrigerator stink in the cold or direct cooling refrigerator between can be used for.Also can be widely used in household electrical appliance and the interior deodorizing of toilet, kitchen, room and automobile such as air-conditioning, air purifier, cooking device.In addition, because ethene decomposes ethene to the ripe aging strong facilitation that has of fruits and vegetables and effectively absorb, reduce ethylene concentration and just can slow down the fruits and vegetables aging speed greatly.This catalyst because of well absorbing, this catalyst tool decomposes the ethene function, so also can be used for the preserving fruit and vegetable utilizing purpose.As be used for refrigerator, getting final product deodorizing again can be to preserving fruit and vegetable utilizing.

Claims (6)

1, the manufacture method of deodorization catalyst and carrier thereof, this catalyst are to be formed by carrier or active carrier carrying active matter.

2, the chemical composition of the carrier in the claim 1 can be Al ₂O ₃, SiO ₂, CaO, MgO, P ₂O ₅Deng in the transition metal oxides such as oxide and Ni, Mo, Fe, V, Cr, Mn, Co, Cu, Ag, noble metal one or more, carrier itself just has activity to stink substance when containing transition metal oxide, be referred to as active carrier, can be directly used in the various occasions of claim 5, carrier also can be made up of metal, glass, pottery.

3, claim 1 can be in transition metal oxide such as Ni, Mo, Fe, V, Cr, Mn, Co, Cu, Ag and the noble metal one or more by carrying active matter chemical composition, also Al can also be arranged ₂O ₃, SiO ₂, component such as zeolite, molecular sieve, diatomite, alumina silicate.

4, the shape of finished product catalyst can be multiple shapes such as cellular, tabular, tubulose, netted, granular or powdery.

5, between catalyst in the claim 1 and the active carrier in the claim 2 are installed or are positioned in cold or direct cooling refrigerator, air-conditioning, air purifier and the micro-wave oven and be used to remove stink in toilet, kitchen, room and the automobile.

6, catalyst of the present invention can effectively be removed ethene, can be used in the refrigerator or the preserving fruit and vegetable utilizing purpose of other occasion.