| 摘要 |
<p>23 : Waxy hydrocarbon oils, e.g., of petroleum origin, boiling within the approximate range of 232 to 566.degree.C are catalytically dewaxed utilizing a catalyst comprising a crystalline aluminosilicate zeolite possessing particularly characterized pore openings, such as, for example, ZSM-23 or ZSM-35, which may be associated with a hydrogenation metal.</p> |
