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Titanium-silicon composite oxide carrier and preparation method thereof

A composite oxide and composite hydroxide technology, which can be used in catalyst carriers, chemical instruments and methods, catalyst activation/preparation, etc., and can solve the problems of small pore size and narrow application range.

Active Publication Date: 2010-11-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN1316486A discloses a method for preparing a hydrogenated nano-titanium-silicon composite oxide carrier. The method uses techniques such as sol-gel method and supercritical drying to prepare a titanium-silicon composite with a high specific surface and 2-40nm. The disadvantage is that the more expensive alkoxide is used as the raw material, and the pore size is smaller
CN 1210759A discloses a method for preparing a catalyst carrier for benzene hydrogenation. The titanium-silicon composite oxide prepared by the sol-gel method has a particle size of 1-2.5nm and accounts for 72%. narrow, aperture too small

Method used

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  • Titanium-silicon composite oxide carrier and preparation method thereof
  • Titanium-silicon composite oxide carrier and preparation method thereof

Examples

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Embodiment 1

[0050] 40g of silica sol and 240g of urea were heated and mixed evenly, slowly added to the mixture of 105g of second-line distillate oil and 20g of polyisobutenyl triethanolamine maleate at 90°C, and mixed for 10 minutes at this temperature. Dissolve 149g of titanium tetrachloride in 200ml of ethanol, then add to the micelles, and mix well. At a temperature of 120°C, the temperature and pressure were maintained, and the reaction was carried out for 6 hours. After the reaction, wash with distilled water until there is no negative ion, and centrifuge. Finally, it was dried at 100° C. for 10 hours. Nano-titanium hydroxide-silicon hydroxide gel dry powder 80g is mixed homogeneously with binding agent pseudo-boehmite 20g; 3.2g dilute nitric acid (mass concentration 17%), 15g water and 3g cosolvent ethanol are mixed homogeneously, then Molded in extruder, control pressure at 23MPa. The molded product was dried at 100°C for 10 hours, calcined at 240°C for 3 hours, and then calcin...

Embodiment 2

[0052]Dissolve 66g of tetraethyl orthosilicate in 85g of ethanol, add 74g of urea, heat at 75°C and mix well, slowly add 70g of second-line distillate oil at 75°C, and 12g of polyisobutenyl triethanolamine maleate into the mixture, and here Mix at temperature for 10 minutes. Dissolve 126g of titanium tetrachloride in 120ml of ethanol, then add to the micelles, and mix well. At a temperature of 120°C, the temperature and pressure were maintained, and the reaction was carried out for 6 hours. After the reaction, wash with distilled water until there is no negative ion, and centrifuge. Finally, it was dried at 100° C. for 10 hours. Nano-titanium hydroxide-silicon hydroxide gel dry powder 80g is mixed homogeneously with binding agent pseudo-boehmite 20g; 3.2g dilute nitric acid (mass concentration 17%), 15g water and 3g cosolvent ethanol are mixed homogeneously, then Molded in extruder, control pressure at 23MPa. The molded product was dried at 100°C for 10 hours, calcined at ...

Embodiment 3

[0054] 100g of silica sol and 160g of urea were heated and mixed evenly and slowly added to the mixture of 49g of second-line distillate oil and 15g of polyisobutenyl triethanolamine maleate at 90°C, and mixed at this temperature for 10 minutes. Dissolve 94.4g of titanium tetrachloride in 100ml of ethanol, then add it into the micelles, and mix well. At a temperature of 120°C, the temperature and pressure were maintained, and the reaction was carried out for 6 hours. After the reaction, wash with distilled water until there is no negative ion, and centrifuge. Finally, it was dried at 100° C. for 10 hours. Nano-titanium hydroxide-silicon hydroxide gel dry powder 80g is mixed homogeneously with binding agent pseudo-boehmite 20g; 3.2g dilute nitric acid (mass concentration 17%), 15g water and 3g cosolvent ethanol are mixed homogeneously, then Molded in extruder, control pressure at 23MPa. The molded product was dried at 100°C for 10 hours, calcined at 240°C for 3 hours, and th...

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Abstract

The invention discloses a titanium-silicon composite oxide carrier and a preparation method thereof. The carrier is prepared from titanium hydroxide-silicon hydroxide gel prepared by a super-solubilizing micelle method; and because the gel contains surfactant and hydrocarbon components, nano titanium oxide and silicon oxide particles formed by dehydrating the polymerized titanium hydroxide and the polymerized silicon hydroxide still have a rod-like basic structure after molding and roasting, and the nano particles are randomly piled to form a framework structure. The carrier has large pore volume, large aperture, high porosity, large outer surface orifice and good pore penetrability, does not inactivate a catalyst due to orifice blockage for macromolecules in particular compared with an orifice of an ink bottle type, and is favorable for increasing the deposition of impurities and prolonging the running period of the catalyst. The carrier can be used for catalytic reaction containing macromolecular reactants or products.

Description

technical field [0001] The invention relates to a titanium-silicon composite oxide carrier and a preparation method thereof, in particular to a macroporous titanium-silicon composite oxide carrier and a preparation method thereof. Background technique [0002] As an important process in petroleum refining and synthetic ammonia production using petroleum as raw material, hydrodesulfurization has always been valued by people. However, in recent years, the quality of petroleum has become heavier and worse, while the quality of products has become more stringent, and the requirements for feed materials in subsequent processes have become more and more stringent. In addition, since mankind entered the 21st century, people's awareness of environmental protection has been continuously enhanced, and environmental protection legislation has become more and more stringent. x , SO x And the restrictions on aromatics content are more stringent. In the early 1990s, the sulfur content ...

Claims

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Application Information

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IPC IPC(8): B01J32/00B01J21/08B01J21/06B01J35/10B01J37/00C10G45/04
Inventor 王鼎聪刘纪端
Owner CHINA PETROLEUM & CHEM CORP
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