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Catalytic purification of automobile exhaust gases

Catalytic purification of automobile exhaust gases

VC5.3.1.2

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Description

The so-called 'three-way catalyst' removes the three most important toxic substances from automotive exhaust simultaneously: unburned hydrocarbons, carbon monoxide and nitrogen oxides. It consists of a ceramic carrier to which noble metals such as platinum and palladium are applied. The reactions which take place include the following:

In experiment V5.3.1.2, waste gases are purified with a three-way catalyst. The waste gas used in the investigation can be either automotive exhaust or a self-made mixture of waste gases.

Components of equipment sets

1	666360 8	Catalytic converter
2	665914 4	Gas syringe, 100 ml with 3-way stopcock
3	667312 4	Glass connector, 2 x GL 18
1	524005W 4	Mobile-CASSY 2 WiFi
1	529676 4	Temperature probe, NiCr-Ni, 1.5 mm, type K
1	666425 8	Panel frame C50, two-level, for CPS
2	6664659 8	Adhesive magnetic board 500 mm
2	6664661 8	Holder, magnetic, size 1, 9...11 mm
1	6664662 8	Holder, magnetic, size 2, 11...14 mm
2	6664665 8	Holder, magnetic, size 5, 30...32 mm
1	656016 4	Bunsen burner, universal
1	607020 4	Safety gas hose with clamp 0.5 m
1	30076 8	Laboratory stand II
1	667015 8	Glass file, triganular
1	31327	Hand-held stop-watch, 60s/0.2s
1	662302 8	Spare air bag, set of 30
1	665009 4	Funnel PP 75 mm Ø
1	666313 8	Testing tube for NO_x, 0.5...50 ppm, set of 10
1	666319 4	Testing tube for CO, 0.5...7.0 %, set of 10
1	666314 4	Testing tube for SO₂, 1...25 ppm, set of 10
2		additonally required: exhaust sample or a self produced exhaust mixture made of nitrogendioxide and methane or carbonmonoxide