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A kind of carbon dioxide hydrogenation synthesis formic acid catalyst and its preparation method and application

A technology of pyridinedicarbonitrile and cyano-p-quinonedimethane, which is applied in the field of carbon dioxide hydrogenation synthesis of formic acid catalyst and its preparation, can solve the problems of low efficiency, achieve good metal dispersion, less operation steps, and stable cycle sex effect

Active Publication Date: 2022-05-17
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] In view of the deficiencies in the prior art, the present invention provides a catalyst for the synthesis of formic acid by hydrogenation of carbon dioxide and its preparation method and application. The catalyst provided by the present invention has the advantages of high dispersion of active metals and adjustable structure and properties on the atomic scale. In terms of catalytic effect, it can realize the hydrogenation of carbon dioxide at normal temperature and pressure to produce formic acid, which is expected to solve the problem of low efficiency of heterogeneous catalysts in catalytic conversion of carbon dioxide to formic acid under mild conditions, and provides a successful example for the capture and conversion of carbon dioxide at normal temperature and pressure. And the preparation method that the present invention adopts is simple, and production cost is low, therefore has the value of good practical application

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  • A kind of carbon dioxide hydrogenation synthesis formic acid catalyst and its preparation method and application
  • A kind of carbon dioxide hydrogenation synthesis formic acid catalyst and its preparation method and application
  • A kind of carbon dioxide hydrogenation synthesis formic acid catalyst and its preparation method and application

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preparation example Construction

[0037] In yet another specific embodiment of the present invention, a method for preparing the above-mentioned Pd-based metal material is provided, the preparation method comprising: immersing a carbon material or a nitrogen-doped carbon material in a Pd-containing precursor solution, stirring under an inert atmosphere , Filtrated, washed and then dried in vacuum at high temperature.

[0038] Wherein, when the Pd-based metal material is a Pd-based bimetallic material, the Pd-containing precursor solution also contains a second metal, and the second metal is any one of Fe, Co, Ni, Cu, and Zn.

[0039] In yet another specific embodiment of the present invention, the precursor of Pd is Pd-containing acids or salts, including but not limited to palladium chloride, potassium chloropalladate, palladium nitrate, palladium acetate, palladium trifluoroacetate, acetylacetone Any one or more of palladium and triphenylphosphine palladium acetate; the second metal precursor is chloride, ni...

Embodiment 1-5

[0052] Examples 1-5 are nitrogen-doped carbon materials loaded with Pd prepared by using the method provided by the present invention and using 2,6-pyridinedicarbonitrile (2,6-DCP) as a precursor. The specific preparation method is as follows: 1. Preparation of nitrogen-doped carbon material: Weigh 3.0 grams of 2,6-pyridinedicarbonitrile and 15.9 grams of ZnCl 2 Solid, grind and mix in a glove box, put it into an ampoule tube for vacuuming and sealing after grinding evenly, then put it in a muffle furnace at 400°C for 20 hours, and then raise the roasting temperature to 600°C for further roasting After 20 hours, after cooling down to room temperature, the roasted sample was ground and added to 1L 2mol / L hydrochloric acid solution, stirred and washed for 12 hours, then filtered, washed with deionized water, washed with tetrahydrofuran, and dried in vacuum at 150°C for 12 hours to obtain nitrogen-doped carbon material sample (2,6-DCP-C). 2. Weigh 1.0 g of the 2,6-DCP-C sample p...

Embodiment 6-8

[0055] Examples 6-8 use the method provided by the present invention to prepare a Pd-based bimetallic catalyst. The specific preparation method is as follows: 1. Preparation of nitrogen-doped carbon material: Weigh 3.0 grams of 2,6-pyridinedicarbonitrile and 15.9 grams of ZnCl 2 Solid, grind and mix in a glove box, put it into an ampoule tube for vacuuming and sealing after grinding evenly, then put it in a muffle furnace at 400°C for 20 hours, and then raise the roasting temperature to 600°C for further roasting After 20 hours, after cooling down to room temperature, the roasted sample was ground and added to 1L 2mol / L hydrochloric acid solution, stirred and washed for 12 hours, then filtered, washed with deionized water, washed with tetrahydrofuran, and dried in vacuum at 150°C for 12 hours to obtain nitrogen-doped carbon material sample (2,6-DCP-C). 2. Weigh 1.0g of the 2,6-DCP-C sample prepared by the above method, and dip it in a certain amount of methanol solution of p...

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Abstract

The invention provides a carbon dioxide hydrogenation synthesis formic acid catalyst and its preparation method and application, which belong to the technical field of catalyst synthesis and fine chemical industry. The Pd-based metal material catalyst provided by the present invention has the advantages of high dispersion of active metals, adjustable structure and properties on the atomic scale, and can realize the process of formic acid hydrogenation of carbon dioxide at normal temperature and pressure in terms of catalytic effect, and is expected to solve the problem of heterogeneous catalysts. The problem of low efficiency of catalytic conversion of carbon dioxide to formic acid under mild conditions provides a successful example for the capture and conversion of carbon dioxide at normal temperature and pressure, and the preparation method adopted in the present invention is simple and the production cost is low, so it has good practical application value.

Description

technical field [0001] The invention belongs to the technical field of catalyst synthesis and fine chemical industry, and in particular relates to a carbon dioxide hydrogenation synthesis formic acid catalyst and its preparation method and application. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] With the excessive exploitation and use of fossil energy, the excessive emission of carbon dioxide has become one of the most concerned environmental problems in the world today. In 2017, the concentration of carbon dioxide in the atmosphere exceeded 400ppm, the highest value in human history, which poses a huge threat to the earth's ecosystem. How to capture and convert carb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24C07C51/00C07C53/02
CPCB01J27/24C07C51/00C07C53/02Y02P20/52
Inventor 邓伟侨任国庆孙磊翟盛良于铁
Owner SHANDONG UNIV
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