Synthetic method of material with palladium particles loaded on three-dimensional macroporous molybdenum dioxide

A three-dimensional macroporous, molybdenum dioxide technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, chemical/physical processes, etc., can solve problems such as plastic deformation and performance degradation, and achieve current Increased density, improved catalytic performance, and shorter time-consuming effects

Inactive Publication Date: 2017-01-11
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the irreversible volume expansion can lead to plastic deformation and performance degradation, it is necessary to further study its structure

Method used

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  • Synthetic method of material with palladium particles loaded on three-dimensional macroporous molybdenum dioxide
  • Synthetic method of material with palladium particles loaded on three-dimensional macroporous molybdenum dioxide
  • Synthetic method of material with palladium particles loaded on three-dimensional macroporous molybdenum dioxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Take 2g of the template and put it into 10ml of 0.05M MoCl 5 Put the beaker into a 50°C incubator, seal the beaker to prevent the volatilization of water, and oxidize the solution in about two days, filter it several times and dry it to obtain a blue solid. Put this solid in a crucible and put it into a heating furnace that can pass through a protective atmosphere, heat treatment for 2 hours from 20°C to 650°C under the protection of flowing argon atmosphere, and the heating rate is 5°C / min, and then cool with the furnace to obtain Three-dimensional macroporous MoO with a pore size of 200 nm 2 .

[0023] Obtained MoO 2 Put 20 mg into 20 ml of water, hydrochloric acid, stannous chloride (mass ratio is 20:1:0.1) mixed suspension, hydrochloric acid is 1mol / L hydrogen chloride aqueous solution, stir with a magnetic stirrer for 30 minutes, centrifuge to get the precipitate thing. Put the precipitate into PdCl 2 Solution (10mL water, 0.5g PdCl 2 ), stirred with a magne...

Embodiment 2

[0025]Take 2g of the template and put it into 10ml of 0.05M MoCl 5 Put the beaker into a 50°C incubator, seal the beaker to prevent the volatilization of water, and oxidize the solution in about two days, filter it several times and dry it to obtain a blue solid. Put this solid in a crucible and put it into a heating furnace that can pass through a protective atmosphere, and heat it from 25°C to 640°C for 1.5 hours under the protection of a flowing argon atmosphere, and the heating rate is about 8°C / min. After cooling in the furnace, a three-dimensional macroporous MoO with a pore size of 350 nm was obtained. 2 .

[0026] Obtained MoO 2 Put 20 mg into 20 ml of water, hydrochloric acid, and a mixed suspension with a submass ratio of chloride (20:1:0.1), the hydrochloric acid is 3mol / L hydrogen chloride aqueous solution, and the precipitate is put into PdCl 2 Solution (10mL water, 0.5g PdCl 2 ), stirred with a magnetic stirrer for 30 minutes, centrifuged to take the precipi...

Embodiment 3

[0028] Take 2g of the template and put it into 10ml of 0.05M MoCl 5 Put the beaker into a 50°C incubator, seal the beaker to prevent the volatilization of water, and oxidize the solution in about two days, filter it several times and dry it to obtain a blue solid. Put this solid in a crucible and put it into a heating furnace that can pass through a protective atmosphere, and heat it from 22°C to 645°C for 2 hours under the protection of a flowing argon atmosphere, and the heating rate is about 8°C / min. After cooling in the furnace, a three-dimensional macroporous MoO with a pore size of 400 nm was obtained. 2 .

[0029] Obtained MoO 2 Put 20 mg into 20 ml of water, hydrochloric acid, stannous chloride (mass ratio is 20:1:0.1) mixed suspension, hydrochloric acid is 5mol / L hydrogen chloride aqueous solution, stir with a magnetic stirrer for 30 minutes, centrifuge to get the precipitate things. Put the precipitate into PdCl 2 Solution (10mL water, 0.5g PdCl 2 ), stirred w...

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Abstract

The invention discloses a synthetic method of a material with palladium particles loaded on three-dimensional macroporous molybdenum dioxide. The mass ratio of molybdenum dioxide to palladium is 20 to (0.06-0.6), the pore diameter of the molybdenum dioxide ranges from 200 nm to 400 nm, and the pore diameter of the palladium particles ranges from 5 nm to 10 nm. A three-dimensional macroporous molybdenum dioxide structure is prepared by ordered polymethyl methacrylate microsphere colloidal crystal templates and the palladium particles are loaded on the three-dimensional macroporous molybdenum dioxide structure. The synthetic method has the advantages of low cost, simplicity and convenience in operation, low pollution, high efficiency and economy, and the material is stable in structure and has electro-catalytic performance.

Description

[0001] The application of the present invention is a divisional application of the parent application "a three-dimensional macroporous structure molybdenum dioxide-supported palladium particle material and its synthesis method". The application date of the parent application is April 8, 2015, and the application number is 2015101622232. technical field [0002] The invention relates to a novel nanometer material and a synthesis method thereof, in particular to a three-dimensional macroporous structure molybdenum dioxide-loaded palladium particle material and a synthesis method thereof. Background technique [0003] transition metal oxide Mo0 2 Belonging to the monoclinic system, with a distorted rutile crystal structure, Mo0 2 It is a transition metal oxide with high conductivity, high melting point, and high chemical stability. Its high-efficiency charge transport properties make it widely used in catalysts, sensors, electrochromic displays, recording materials, electrochem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/652
CPCB01J23/6525B01J35/0033B01J35/0073B01J35/10B01J35/1066B01J37/0207B01J37/082
Inventor 梁砚琴李彬彬崔振铎杨贤金朱胜利李朝阳
Owner TIANJIN UNIV
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