| 简介 |
PROBLEM TO BE SOLVED : To provide a zeolite type catalyst capable of efficiently manufacturing a lower olefin by suppressing the formation of aromatic components and excellent in the lasting properties of catalytic activity, its manufacturing method and a method of manufacturing the lower olefin using the zeolite type catalyst.
SOLUTION : The catalyst for manufacturing the lower olefin comprises crystalline aluminosilicate on which an alkaline earth metal, a rare-earth element and phosphorus are supported and is characterized in that phosphorus and the components other than phosphorus are supported on the crystalline aluminosilicate in separate processes. The method of manufacturing the catalyst for manufacturing the lower olefine is characterized in that the alkaline earth metal and the components other than phosphorus are supported on the crystalline aluminosilicate in the separate processes when the catalyst for manufacturing the lower olefin is manufactured by supporting the alkaline earth metal, the rare-earth element and phosphorus on the crystalline aluminosilicate. Further, the method of manufacturing the lower olefin is characterized by using the catalyst for manufacturing the lower olefin.
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