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Method for production of a substrate coated with a zeolite layer

A substrate and zeolite technology, applied in coatings, chemical instruments and methods, metal material coating technology, etc., can solve problems such as perfection, unsatisfactory methods, poor fixation, etc.

Active Publication Date: 2010-06-16
SORTECH AG (DE)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Known methods have not been fully satisfactory
Although layers typical of aluminosilicate zeolites form here, their fixation on the substrate is not as perfect as it should be

Method used

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  • Method for production of a substrate coated with a zeolite layer
  • Method for production of a substrate coated with a zeolite layer

Examples

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Embodiment Construction

[0029] The method according to the invention will be illustrated below by means of an example in which SAPO 34 is produced on an aluminum substrate.

[0030] First, 23.6 grams of water, and 2.38 grams of 85% phosphoric acid as a phosphorus source material, and 2.0 grams of silica sol (30.4% SiO in water as a silicon source material) were prepared. 2 ) and 5.4 g of morpholine as a template molecule in an aqueous suspension. The above weight figures are rounded off here. Specifically, here phosphoric acid and 9.4 grams of water were previously placed in a mixing vessel to prepare a first partial mixture. Separately, a second partial mixture consisting of 2.0 g of silica sol and 5.4 g of morpholine and 9.4 g of water was prepared and added dropwise to the first partial mixture with continuous stirring. The first partial mixture finally provided consisted of 6 grams of water, 6 grams of 85% phosphoric acid and 3.6 grams of pseudoboehmite. In addition, a second partial mixture c...

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Abstract

The invention relates to a method for production of a zeolite layer on a substrate containing metal, comprising the following method steps: production of an aqueous suspension, comprising several components, one component comprises at least one cross-linking element from the third, fourth or fifth main group of the periodic table, the substrate containing metal comprises at least one of the cross-linking elements, introduction of the substrate containing metal to the aqueous suspension, heating the aqueous suspension and the substrate containing the metal present therein for the in-situ crystallisation of a zeolite layer on the substrate containing metal, whereby the cross-linking elements in the substrate containing metal are extracted and included in the zeolite layer, a cross-linking element present in the suspension for formation of the zeolite layer is present at a concentration so low that a crystallisation in the suspension is largely or completely avoided and said element is principally provided by the substrate.

Description

technical field [0001] The present invention relates to a method for the preparation of substrates coated with zeolite layers, and in particular to the coating of metal-containing substrates. Background technique [0002] Zeolites in the narrow mineralogical sense refer to silicate minerals and in particular aluminosilicates with a chemically complex structure, which are characterized by the formation of porous tetrahedral networks (T-networks). According to the general definition of IZA (International Zeolite Association), zeolites are those with a network density of <19T atoms / The material of the T network. Zeolites have a structure with internal voids, where these voids may be on the order of molecular dimensions. This is why zeolites have the property of being able to accept foreign atoms or molecules in their porous structure, for example, zeolites are able to store large amounts of water and release them again when heated. Therefore, the zeolitic material in co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/12F25B17/08F28F13/18C04B35/00
CPCC23C18/1245B01J2229/64C23C18/1254C23C18/1241B01J2229/66B01J29/85C23C18/1212Y10T428/249978C23C26/00
Inventor W·施维格R·赫曼S·圣伽拉耶M·雷迪F·谢夫勒F·施密特W·米特巴奇H-M·亨宁J·鲍尔
Owner SORTECH AG (DE)
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