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Carbon-supported ruthenium phosphide nanocluster dual-functional catalyst, and preparation method and application thereof

A bifunctional catalyst and nanocluster technology, applied in physical/chemical process catalysts, chemical instruments and methods, organic chemistry, etc., can solve the problems of expensive carrier, cost limitation, complicated preparation process of Co catalyst, etc., and achieve excellent activity and high performance. Stability and good stability

Active Publication Date: 2020-01-03
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, noble metal-based catalysts Pd, Pt, and Rh have limited their application in catalysis due to their rarity and high cost, and Co catalysts are not suitable for industrial catalysis applications due to their complicated preparation process and expensive supports.

Method used

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  • Carbon-supported ruthenium phosphide nanocluster dual-functional catalyst, and preparation method and application thereof
  • Carbon-supported ruthenium phosphide nanocluster dual-functional catalyst, and preparation method and application thereof
  • Carbon-supported ruthenium phosphide nanocluster dual-functional catalyst, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Add 0.5 g of activated carbon powder (170-220 mesh in particle size) into 50 mL of water at room temperature, and ultrasonically disperse the activated carbon to obtain the first suspension; add 1 mL of 10 mg / mL RuCl 3 The aqueous solution was added dropwise to the first suspension, and stirred at room temperature for 3 h, so that the RuCl 3 Fully adsorbed on the surface of activated carbon to obtain the second suspension.

[0031] At a temperature of 80° C., the second suspension was continuously stirred until all the water was evaporated to obtain the first solid powder. The first solid powder and 100 mg of sodium hypophosphite are fully ground in a mortar, and the ground mixed powder is transferred to a porcelain boat, and the porcelain boat is placed in a tube furnace for calcination under a nitrogen atmosphere. The calcination process is as follows: It was heated from room temperature to 600 °C at a rate of 5 °C / min, and maintained at 600 °C for 5 h, and then natu...

Embodiment 2

[0035] Add 1 g of activated carbon powder (170-220 mesh in particle size) to 120 mL of water at room temperature, and ultrasonically disperse the activated carbon to obtain the first suspension; add 2.2 mL of 10 mg / mL RuCl 3 The aqueous solution was added dropwise to the first suspension, and stirred at room temperature for 4 h, so that the RuCl 3 Fully adsorbed on the surface of activated carbon to obtain the second suspension.

[0036] At a temperature of 78° C., the second suspension was continuously stirred until all the water was evaporated to obtain the first solid powder. The first solid powder and 500 mg sodium hypophosphite are fully ground in a mortar, and the ground mixed powder is transferred to a porcelain boat, and the porcelain boat is placed in a tube furnace for calcination under a nitrogen atmosphere. The calcination process is as follows: It was heated from room temperature to 650 °C at a rate of 7 °C / min, and maintained at 650 °C for 4.5 h, and then natura...

Embodiment 3

[0038] Add 0.3 g of activated carbon powder (170-220 mesh in particle size) to 50 mL of water at room temperature, and ultrasonically disperse the activated carbon to obtain the first suspension; add 0.7 mL of 10 mg / mL tris(acetylacetonate ) ruthenium(III) aqueous solution was added dropwise to the first suspension, and stirred at room temperature for 3 h, so that tris(acetylacetonate)ruthenium(III) was fully adsorbed on the surface of activated carbon to obtain a second suspension.

[0039] At a temperature of 90° C., the second suspension was continuously stirred until all the water was evaporated to obtain the first solid powder. The first solid powder and 60 mg of sodium hypophosphite are fully ground in a mortar, and the ground mixed powder is transferred to a porcelain boat, and the porcelain boat is placed in a tube furnace for calcination under a nitrogen atmosphere. The calcination process is as follows: It was heated from room temperature to 700 °C at a rate of 7 °C / ...

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Abstract

The invention discloses a carbon-supported ruthenium phosphide nanocluster dual-functional catalyst, and a preparation method and application thereof. The preparation method of the catalyst comprisesthe following steps: dispersing active carbon powder and an Ru precursor in water, carrying out stirring to ensure that the Ru precursor is fully adsorbed on the surface of the active carbon, then carrying out evaporating to remove moisture, mixing and grinding the obtained solid powder with sodium hypophosphite, placing the mixture in a tubular furnace, carrying out high-temperature calcination in an inert atmosphere to enable the Ru precursor supported on the active carbon and the sodium hypophosphite to react at high temperature to be converted into a ruthenium phosphide active component, washing the calcined product with water, and carrying out drying to obtain the carbon-supported ruthenium phosphide nanocluster dual-functional catalyst. The carbon-supported ruthenium phosphide nanocluster dual-functional catalyst disclosed by the invention can be used for catalyzing a hydrogenation reaction of quinoline and catalyzing a dehydrogenation reaction of 1,2,3,4-tetrahydroquinoline. Thecatalyst disclosed by the invention is high in catalytic activity and good in stability; and the preparation method of the catalyst is simple, and is easy for industrial mass production.

Description

technical field [0001] The invention discloses a carbon-supported diruthenium phosphide nano-cluster bifunctional catalyst as well as a preparation method and application thereof. Background technique [0002] Quinoline and 1,2,3,4-tetrahydroquinoline and their derivatives are important intermediates for the synthesis of drugs, pesticides, dye alkaloids and many other biologically active molecules, and have very important application value. Secondly, quinoline and its derivatives are also important raw materials for the synthesis and preparation of some medical drugs. Quinoline compounds are mainly used in the synthesis of antimalarial drugs, antipyretic and analgesic drugs, local anesthetic drugs, etc. In addition to drug synthesis, quinoline and its derivatives are also used in the research and treatment of AIDS. Therefore, the development of bifunctional catalysts for the hydrogenation of quinoline and the dehydrogenation of 1,2,3,4-tetrahydroquinoline and its derivative...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/185C07D215/06
CPCB01J27/1856C07D215/06B01J35/394
Inventor 王建国邵方君魏中哲
Owner ZHEJIANG UNIV OF TECH
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