| 简介 |
FIELD : chemistry.
SUBSTANCE : invention relates to a catalyst for combustion of carbon-bearing material contained in exhaust gas of an internal combustion engine, to a method of preparing said catalyst, as well as a support for said catalyst and method of preparing said support. The invention describes a method of preparing a carbon-bearing material combustion catalyst which is attached to a ceramic substrate, involving mixing aluminium silicate having atomic equivalent ratio Si/Al≥1 and an alkali and/or alkali-earth metal source in a polar solvent such as water or another, drying the liquid mixture to obtain a solid substance and burning it at temperature of 600°C or higher. The aluminium silicate is sodalite. Alternatively, the carbon-bearing material combustion catalyst is prepared through a sequence of steps for mixing, drying and burning, whereby the method involves burning sodalite at temperature of 600°C or higher. A catalyst prepared using the method given above is described. Described also is a method of preparing a catalyst support involving a step for attaching the combustion catalyst to a ceramic substrate, and a catalyst support made using said method.
EFFECT : stable combustion and removal of carbon-bearing material at low temperature for a long period of time.
26 cl, 3 ex, 1 av ex, 27 dwg |
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