Precious metal loaded three-dimensional mesoporous silico-aluminate catalyst and preparation method thereof

A three-dimensional mesoporous aluminosilicate and precious metal salt technology, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of poor catalyst pore structure, The post-treatment process is complicated and tedious, and the loading of active components is not uniform, so as to improve the flow diffusion performance, improve the flow diffusion and increase the catalytic performance.

Inactive Publication Date: 2017-08-25
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Li Sanxi et al. synthesized an aluminosilicate-supported iron-based late-transition metal ethylene polymerization catalyst. The catalyst has the advantages of high loading efficiency, low cost, and high activity of the prepared catalyst, but its disadvantage is that the catalyst as a whole poor pore structure
Fu Qiang et al. invented a method for synthesizing a supported catalyst, which mixed a crystalline aluminosilicate molecular sieve with a solution containing competing adsorbents and metal ions, and then carried out silanization treatment. The cata

Method used

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  • Precious metal loaded three-dimensional mesoporous silico-aluminate catalyst and preparation method thereof
  • Precious metal loaded three-dimensional mesoporous silico-aluminate catalyst and preparation method thereof
  • Precious metal loaded three-dimensional mesoporous silico-aluminate catalyst and preparation method thereof

Examples

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Example Embodiment

[0050] Example 1

[0051] A preparation method of a three-dimensional mesoporous aluminosilicate catalyst supported by a noble metal, comprising the following steps:

[0052] 1) add 10ml of deionized water to n-butanol (20ml, 99.5%, relative density ρ=0.81), evenly mix and stand for stratification, take the supernatant to obtain a water-saturated butanol solution, for subsequent use;

[0053] 2) Take 0.2g of tetramethoxysilane (98%, relative density ρ=1.02) and 2g aluminum n-butoxide (97wt%, relative density ρ=0.967), put it at 25°C for 10min, use The magnetic stirrer was stirred for 10 min at a rotating speed of 100 r / min, and then left standstill for 10 min to obtain a viscous transparent liquid I, for subsequent use;

[0054] 3) 2ml of gained viscous transparent liquid I was uniformly added dropwise to 20mL into a water-saturated butanol solution (organic solvent), and it was found that a white precipitate was generated immediately, under the condition of 25 ° C, after sta...

Example Embodiment

[0059] Example 2

[0060] A preparation method of a three-dimensional mesoporous aluminosilicate catalyst supported by a noble metal, comprising the following steps:

[0061] 1) Add 10ml of deionized water to n-butanol (20ml, 99.5%, relative density ρ=0.81), evenly mix and let stand for stratification, take the supernatant to prepare a water-saturated butanol solution for later use.

[0062] 2) Take 0.3g of tetramethoxysilane (98%, relative density ρ=1.02) and 2g aluminum n-butoxide (97wt%, relative density ρ=0.967), put it at 25°C for 10min, use The magnetic stirrer was stirred for 10min at a rotating speed of 100r / min, and then left standstill for 10min to obtain a viscous transparent liquid I for subsequent use.

[0063] 3) 3mL of viscous transparent liquid I was uniformly added dropwise to 20mL of water-saturated butanol solution, and it was found that a white precipitate was formed immediately. Under stirring for 10min, then stand for 10min to obtain a white precipitate...

Example Embodiment

[0068] Example 3

[0069] A preparation method of a three-dimensional mesoporous aluminosilicate catalyst supported by a noble metal, comprising the following steps:

[0070] 1) Add 10ml of deionized water to n-butanol (20ml, 99.5%, relative density ρ=0.81), evenly mix and let stand for stratification, take the supernatant to prepare a water-saturated butanol solution for later use.

[0071] 2) Take 0.2g of tetramethoxysilane (98%, relative density ρ=1.02) and 2g aluminum n-butoxide (97wt%, relative density ρ=0.967), put it at 25°C for 10min, use The magnetic stirrer was stirred for 10 min at a rotating speed of 100 r / min, and then left standstill for 10 min to obtain a viscous transparent liquid I, for subsequent use;

[0072] 3) 2mL of viscous transparent liquid I was evenly added dropwise to 20mL of water-saturated butanol solution, and it was found that a white precipitate was formed immediately. Under stirring for 10min, then stand for 10min to obtain a white precipitat...

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Abstract

The invention discloses a preparation method for a precious metal loaded three-dimensional mesoporous silico-aluminate catalyst. The method comprises the following steps: with a saturated butanol aqueous solution as a reaction medium, adding a defined amount of silicon source into a reaction process; regulating a reaction system, thereby compounding a three-dimensional mesoporous silico-aluminate carrier material; performing precious metal loading, thereby preparing the precious metal loaded silico-aluminate catalyst with a three-dimensional netted mesoporous structure. The catalyst prepared according to the invention has a three-dimensional mesoporous structure; a mesopore is assembled by nanometer silico-aluminate bars; the catalyst wholly has excellent pore connectivity, high specific surface area and high pore volume; the loaded precious metal active components are uniformly distributed on the catalyst carrier; the compounding condition is mild; the reaction is easily controlled; the catalyst has excellent application prospect in the petrochemical engineering field, the catalyst field and especially the field of deoxidation hydrogenation of biomass diesel oil and utilization of biomass diesel oil by-products and is suitable for industrial popularization.

Description

technical field [0001] The invention belongs to the technical field of inorganic composites, and in particular relates to a three-dimensional mesoporous aluminosilicate catalyst supported by a noble metal and a preparation method thereof. Background technique [0002] As we all know, supported catalysts occupy an irreplaceable and important position in the modern petrochemical field, and aluminosilicate supports are often used in the petrochemical and catalytic industries due to their good stability, low price, acidity and good thermal stability on the surface. The most widely used catalyst or catalyst carrier. Precious metal nanoparticles are often used as active components in various catalytic reactions due to their stable chemical properties, not easy to be oxidized, and their excellent physical properties and unique catalytic activity. [0003] Noble metal-supported catalysts not only have the advantages of high catalytic activity, high temperature resistance, and oxida...

Claims

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Application Information

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IPC IPC(8): B01J23/42
Inventor 苏宝连汪建南彭钊孙明慧陈丽华
Owner WUHAN UNIV OF TECH
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