| 简介 |
PROBLEM TO BE SOLVED : To provide a catalyst molding for exhaust gas cleaning, excellent in thermal shock resistance and mechanical strength. SOLUTION : This catalyst molding for the exhaust gas cleaning is formed by carrying one or more elements, selected from the groups IB, IVA, VA, VIA, VIIA, and VIII in the periodic table, and rare earth elements, ad their compounds on an alumina carrier prepared roman alumina hydrate comprising fibrous boehmite having an average diameter of 3-50 nm, an average length of 30-10, 000 nm, and a molecular formula represented by Al2O3.1.05-1.30H2O. |
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