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process for the preparation of the catalyst structure and catalytic samengestel far - justified under the application of the method.
process for the preparation of the catalyst structure and catalytic samengestel far - justified under the application of the method.
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机译:该方法的应用证明了催化剂结构和催化烯丙基的制备方法是合理的。
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摘要
A composite catalytic structure is obtd. by forming a coating contg. Cu on a substrate contg. Ni plus 10 wt. % min. of Cr, the coating contg. less Ni than the substrate. The coated substrate is heated in a protective atmos. to above the m. pt. of Cu to obtain a catalytic structure contg Ni, Cr, and Cu with a stratified surface or which after heating in an atmos. contg. O2 or during its use, develops stratified layers of oxide and an oxidised sub-layer rich in chromium. Used for sepn. of NOx, CO and hydrocarbons in motor vehicle exhaust gas. Provides an inexpensive method of mfg. the catalyst structure by starting from a preformed metal substrate.
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