Catalyst carrier, supported catalyst, preparation method and application thereof

A kind of supported catalyst, catalyst technology

Active Publication Date: 2020-12-15
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a simple method for preparing boron-doped carbon materials, and use the prepared materials as the carrier of metal nanoparticles to solve the problem of the interaction between carbon materials and the loaded metal nanoparticles. Weak, the problem that metal nanoparticles are easy to aggregate and fall off in heterogeneous catalytic reactions

Method used

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  • Catalyst carrier, supported catalyst, preparation method and application thereof
  • Catalyst carrier, supported catalyst, preparation method and application thereof
  • Catalyst carrier, supported catalyst, preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0047] Vector preparation:

[0048] (1) Weigh 3.0 g of glucose and 1.6 g of boric acid, dissolve them in deionized water, and stir at room temperature for 8 hours.

[0049] (2) Continue to stir the above solution in a 60°C oil bath to make it dry.

[0050] (3) Transfer the dried sample to a tube furnace, heat up to 300°C at 5°C / min under an argon atmosphere, and bake at an argon flow rate of 100mL / min for 1h, then raise the temperature at 5°C / min under an argon atmosphere To 800°C, the argon flow rate is 100mL / min, roast for 2h, and then lower the temperature.

[0051] (4) Grinding the calcined product into fine powder in a mortar, washing with hot water three times in a sand core funnel, washing once with absolute ethanol, and drying in an oven to obtain a carrier.

[0052] TEM characterization to obtain the morphology of the catalyst support, such as figure 1 , indicating that the carrier is composed of sheet-like structures. Raman results showed that the catalyst suppor...

Embodiment 2

[0059] Vector preparation:

[0060] (1) Weigh 3.0 g of glucose and 3.2 g of boric acid, dissolve them in deionized water, and stir at room temperature for 8 hours.

[0061] (2) Continue to stir the above solution in a 60°C oil bath to make it dry.

[0062] (3) Transfer the dried sample to a tube furnace, heat up to 300°C at 5°C / min under an argon atmosphere, and bake at an argon flow rate of 100mL / min for 1h, then raise the temperature at 5°C / min under an argon atmosphere To 900°C, the argon flow rate is 100mL / min, roast for 2h, and then lower the temperature.

[0063] (4) Grinding the calcined product into fine powder in a mortar, washing with hot water three times in a sand core funnel, washing once with absolute ethanol, and drying in an oven to obtain a carrier.

[0064] The obtained catalyst support is composed of flake-shaped amorphous carbon material modified with boron and oxygen elements, wherein the boron element is represented by BC 3 、BCO 2 and BC 2 The form o...

Embodiment 3

[0070] Vector preparation:

[0071] (1) Weigh 3.0 g of glucose and 3.2 g of boric acid, dissolve them in deionized water, and stir at room temperature for 8 hours.

[0072] (2) Continue to stir the above solution in a 60°C oil bath to make it dry.

[0073] (3) Transfer the dried sample to a tube furnace, heat up to 300°C at 5°C / min under an argon atmosphere, and bake at an argon flow rate of 100mL / min for 1h, then raise the temperature at 5°C / min under an argon atmosphere To 1000°C, the argon flow rate is 100mL / min, roast for 2h, and then lower the temperature.

[0074] (4) Grinding the calcined product into fine powder in a mortar, washing with hot water three times in a sand core funnel, washing once with absolute ethanol, and drying in an oven to obtain a carrier.

[0075] The obtained catalyst support is composed of flake-shaped amorphous carbon material modified with boron and oxygen elements, wherein the boron element is represented by BC 3 、BCO 2 and BC 2 The form ...

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Abstract

The invention relates to a catalyst carrier, a supported catalyst and a preparation method and application thereof and mainly solves the problem that metal nanoparticles are prone to gathering, growing and shedding in the process of multiphase catalytic reaction due to weak interaction force between a carbon material and loaded metal nanoparticles. A boron doped carbon material is obtained by adopting biomass sugar and a born-containing compound as precursors and performing high-temperature calcining, so that the above problem is well solved. The doped carbon material highly interacts with themetal nanoparticles; when the doped carbon material serving as a carrier loads the metal nanoparticles, the metal nanoparticles can be dispersed uniformly, gathering and shedding of the metal nanoparticles in the process of catalytic reaction are effectively contained, and activity and stability of the catalyst are improved remarkably. The doped carbon material is extensive in raw material source, low in cost, easy to obtain, simple in preparation process and good in application prospect and is an ideal metal nanoparticle carrier material.

Description

technical field [0001] The invention relates to a catalyst carrier, a supported catalyst, a preparation method and application thereof. Background technique [0002] Compared with non-supported metal catalysts, supported metal catalysts are widely used because they can greatly increase catalyst activity, improve catalyst selectivity, reduce catalyst cost, easy separation of catalyst and reaction products, and easy recovery and reuse of active components. Petrochemical, energy conversion, environmental protection, etc. Commonly used catalyst supports include: metal oxide supports, carbon material supports, molecular sieve supports, and some natural substances such as zeolite, diatomaceous earth, etc. Among them, carbon materials have become one of the earliest materials used as metal catalyst supports because of their developed pore structure, high specific surface area, excellent acid and alkali resistance, high thermal conductivity, and low cost, and have always been favor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/18B01J27/22B01J27/20B01J35/10B01J37/10B01J37/02C07C51/367C07C65/01C07C51/347C07C63/04C07C51/235C07C51/41C07C59/105C07C1/26C07C15/14
CPCB01J21/18B01J27/20B01J27/22B01J35/1023B01J35/1028B01J35/1042B01J37/0201B01J37/10C07C1/26C07C15/14C07C51/235C07C51/347C07C51/367C07C51/412C07C59/105C07C63/04C07C65/01
Inventor 潘秀莲铁锴包信和李攀何丽敏
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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