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Application of Ti3C2Tx MXenes non-noble metal heterogeneous catalyst in formic acid dehydrogenation

A non-precious metal and catalyst technology, which is applied in the field of formic acid dehydrogenation, can solve the problems of high cost, achieve stable properties, high catalyst activity, and efficiently catalyze the dehydrogenation of formic acid

Pending Publication Date: 2020-08-11
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the dehydrogenation of formic acid, noble metal catalysts have been widely used due to their remarkable activity and selectivity, but their high cost forces people to develop new non-precious metal catalysts for the decomposition of formic acid.

Method used

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  • Application of Ti3C2Tx MXenes non-noble metal heterogeneous catalyst in formic acid dehydrogenation
  • Application of Ti3C2Tx MXenes non-noble metal heterogeneous catalyst in formic acid dehydrogenation
  • Application of Ti3C2Tx MXenes non-noble metal heterogeneous catalyst in formic acid dehydrogenation

Examples

Experimental program
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Embodiment 1

[0024] (1) Take 1.225g of purchased commercial Ti 3 AlC 2 powder, add 15mL of 40% hydrofluoric acid, stir at room temperature for 72 hours, and selectively etch and remove the Al atomic layer in the material; pour the etched material into a centrifuge tube, add deionized water and ethanol to repeatedly centrifuge and wash, The rotating speed of the centrifuge is 7000rpm, and the centrifugation time is 10min each time until the pH value of the supernatant reaches about 6. Pour off the supernatant, and vacuum-dry the bottom material at 60°C for 24 h; finally, disperse the obtained powder in 50 ml of water, and sonicate for 24 h to obtain Ti 3 C 2 T x MXenes material;

[0025] (2) Put Ti 3 C 2 T x The MXenes material was oxidized and calcined at 250 °C for 1 h in a muffle furnace to obtain Ti 3 C 2 T x -250. Such as figure 1 As shown, Ti 3 C 2 T x -250 has a layered structure, which can provide a large number of surface adsorption sites for dehydrogenation reaction...

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Abstract

The invention discloses an application of a Ti3C2Tx MXenes non-noble metal heterogeneous catalyst in formic acid dehydrogenation. Ti3C2Tx MXenes is placed in an oxidizing atmosphere and calcined at 200-300 DEG C and then used for catalyzing formic acid dehydrogenation. The catalytic activity of the Ti3C2Tx MXenes on the formic acid dehydrogenation reaction can be improved by adjusting the oxygen coverage on the surface of the Ti3C2Tx MXenes, the Ti3C2Tx MXenes can be used for catalyzing the formic acid dehydrogenation reaction, and the catalyst is high in activity, stable in property and capable of being recycled for multiple times.

Description

technical field [0001] The invention belongs to the technical field of formic acid dehydrogenation, in particular to a highly active Ti 3 C 2 T x Application of MXenes non-noble metal heterogeneous catalysts in the dehydrogenation of formic acid. Background technique [0002] Formic acid is a highly concerned liquid hydrogen carrier, which is renewable, safe, and non-toxic, and has great application potential in fuel cells and chemical engineering. In the dehydrogenation of formic acid, noble metal catalysts have been widely used due to their remarkable activity and selectivity, but their high cost forces people to develop new non-precious metal catalysts for formic acid decomposition. [0003] In recent years, the development of non-noble metal catalysts for formic acid dehydrogenation has progressed by leaps and bounds, especially homogeneous catalysts. For example, a Fe catalyst with an additional four-dentate catalyzes the decomposition of formic acid at 80 °C, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/22B01J27/22B01J37/08B01J37/14
CPCC01B3/22B01J37/14B01J37/08B01J27/22C01B2203/1088
Inventor 王梁炳李琪侯婷婷徐佶梁
Owner CENT SOUTH UNIV
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