Method for the preparation of synthetic fine crystalline metal silicates.,申请号EP19900118808-传众专利搜索

Method for the preparation of synthetic fine crystalline metal silicates.

申请公布号：EP0423532(B1)

申请号：EP19900118808

申请日期：1990.10.01

申请公布日期：1994.03.09

申请人：

VAW ALUMINIUM AG;LEUNA-WERKE AG

发明人：BECKER, KARL, DR.;UNGER, BALDUR, DR.;THOME, ROLAND, DR.;TISSLER, ARNO, DR.;SCHWIEGER, WILHELM, DR.;TSCHRITTER, HARTMUT, DR.

分类号：B01J29/06;B01J29/076;C01B39/06;C01B39/36;C07C1/20

主分类号：B01J29/06

摘要：Silicates, metal-containing, finely crystalline, hydrothermal crystallisation, template-free The invention relates to a method for the preparation of synthetic finely crystalline metal silicates which can advantageously be used as catalysts or catalyst components in processes for the conversion of organic compounds. According to the invention, this is effected by subjecting a reaction mixture which contains compounds of silicon, sodium and at least one element of the 3rd to 7th subgroup of the Periodic Table of elements, in particular chromium, molybdenum, tungsten or manganese, in addition to hydroxide ions and water and at least one aluminium compound but no organic or nitrogen compound, to a crystallisation process while maintaining a molar ratio M/Al of 0.05 to 5 for a period of 1 to 100 hours, preferably 2 to 20 hours, under hydrothermal conditions at 403 K to 593 K. M represents one or more elements of the 3rd to 7th subgroup of the Periodic Table of elements.