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Use of the surface selective dealumination method and the surface of the zeolite zeolite was dealuminated

机译:使用表面选择性脱铝法和将沸石表面脱铝

摘要

PURPOSE: To enhance selectivity of a caprolactam product by bringing a specific zeolite into contact with dicarboxylic acid. ;CONSTITUTION: The zeolite having 0.1-50 α values and ≥1 constraint index is brought into contact with a 0.01-4 mol dicarboxylic acid solution at 15-93°C for more than 10 minutes until the dealumination of the whole is 50% and the surface acidity lowers at least 40%.;COPYRIGHT: (C)1994,JPO
机译:目的:通过使特定的沸石与二羧酸接触,以提高己内酰胺产品的选择性。 ;组成:具有0.1-50α的沸石。值和1约束指数在15-93℃下与0.01-4 mol二元羧酸溶液接触超过10分钟,直到整体脱铝<50%并且表面酸度降低至少40% 。;版权:(C)1994,日本特许厅

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