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Titano-silico-alumo-phosphate

A titanium-silicon-aluminum phosphate, coordination technology, applied in the direction of molecular sieve characteristic aluminum phosphate, molecular sieve characteristic silicoaluminophosphate, molecular sieve and alkali exchange phosphate, etc., to achieve lower process cost, high hydrothermal pressure resistance, high long-term stability sexual effect

Inactive Publication Date: 2013-08-28
CLARIANT PROD DEUT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This is disadvantageous, in particular, because the preparation is usually carried out in the aqueous phase for cost reasons
[0024] Therefore, there are no substitutes for SAPO-34 in the prior art, which, in addition to better catalytic properties and high adsorption capacity, also have higher hydrothermal stability (especially in accordance with the practice of industrial catalysis over a longer period of time). Inside)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Synthetic example

[0088] For the synthesis example, bizoite (aluminum hydroxide SH10) from Aluminum Oxid Stade GmbH, Germany was used.

[0089] In addition, using from CWK Chemiewerk Bad Silica sol with 1030.30% silica from GmbH, Germany

[0090] Titanium dioxide TiO doped with silicon was obtained from Evonik, Germany 2 545S.

[0091] For the comparative example, SAPO-34 from Sud-Chemie AG was used.

Embodiment 1

[0093] According to TAPSO-34 preparation of the present invention

[0094] 100.15 parts by weight of deionized water were mixed with 88.6 parts by weight of biramite (aluminum hydroxide SH10). 132.03 parts by weight of phosphoric acid (85%) and 240.9 parts by weight of TEAOH (tetraethylammonium hydroxide) (in water, 35%), followed by 33.5 parts by weight of silica sol and 4.87 parts by weight of silicon-doped titanium dioxide Added to the resulting mixture, as a result, a synthetic mixture with the following composition is obtained:

[0095] Al 2 o 3 :P 2 o 5 :0.3SiO2 2 :0.1TiO 2 :1TEAOH:35H 2 o

[0096] The synthetic gel mixture with the above composition was transferred into a stainless steel autoclave. The autoclave was stirred and heated to 180°C, where this temperature was maintained for 68 hours. After cooling, the resulting product was filtered off, washed with deionized water and dried in a 100°C oven. X-ray diffraction of the resulting product showed that t...

Embodiment 2

[0098] Long-term Hydrothermal Stress Test

[0099] The inventive titanosilicoaluminophosphate (TAPSO-34) with 3.4 wt.-% Ti (obtained as in Example 1 using a synthetic gel of correspondingly matched composition) with 0.5 wt.-% Ti Invention titano-silico-aluminophosphate (TAPSO-34) and titanium-free silico-aluminophosphate (SAPO-34) were treated with water to determine the long-term hydrothermal stability at different temperatures over an extended period of time.

[0100] Small-pore molecular sieves with a CHA structure have high adsorption capacity, but have different hydrothermal stability depending on the proportion of titanium in the structure. Therefore, in addition to titano-silico-aluminophosphate (TAPSO-34) according to the invention, non-invention titano-silico-aluminophosphate (TAPSO-34) with a low proportion of titanium and titanium-free titano-silico-aluminophosphate (SAPO-34) were selected , and tested it in the long-term hydrothermal stress test according to the s...

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Abstract

The invention relates to a titano-silico-alumo-phosphate which contains tetradrically coordinated titanium in the framework, which comprises a free coordination point for CO, which can be detected by means of a characteristic IR-band at 2192- 5 cm-1. Said titano-silico-alumo-phosphate displays exceptionally high hydrothermal stability and has a good adsorption capacity even at high temperatures. Based on the high hydrothermal stability, the titano-silico-alumo-phosphate can be obtained by a hydrothermal method from a synthesis gel mixture made of an aluminium, phosphor, silicon and a titanium source, and corresponding templates.

Description

technical field [0001] The invention relates to titanosilicoaluminophosphate and a preparation method thereof. Background technique [0002] Aluminum silicates (zeolites), aluminum phosphates (AlPOs), and silicoaluminophosphates (SAPOs) have been known in the art for some time as active catalyst components in refineries and petrochemicals. In addition, they are used in stationary and mobile phases for exhaust gas purification. [0003] Aluminum silicates (zeolites) occur in nature in a number of different structures but can also be prepared synthetically. Aluminum silicates (zeolites) have a high adsorption capacity and are able to reversibly absorb water and other low-molecular substances, which can then be re-released when heated without damaging their structure. However, it is not only aluminosilicates (zeolites) that show structural diversity and high adsorption capacity, but also aluminophosphates. The Structure Commission of the International Zeolite Association cla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B37/06C01B39/54
CPCB01J29/84B01J29/85C01B39/54B01J20/10B01J20/186B01J20/3085B01J20/3408B01J20/0292C01B37/08B01J29/89B01J20/18B01J20/3078
Inventor S·绍尔贝克O·马诺拉夫A·蒂斯勒尔M·迪纳斯伯格
Owner CLARIANT PROD DEUT GMBH
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