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Preparation method of double-interface catalyst for one-process hydrogen production-hydrogenation coupling reaction and application of catalyst

A coupling reaction and catalyst technology, which is applied in the preparation method of double-interface catalysts and the application field of catalysts, can solve the problems such as the method and method of hydrogen production-hydrogenation series catalysts that have not been publicly reported

Inactive Publication Date: 2016-08-31
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no published report on the means and methods of nanoscale controllable preparation of bimetallic-oxide interfacial hydrogen production-hydrogenation tandem catalysts.

Method used

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  • Preparation method of double-interface catalyst for one-process hydrogen production-hydrogenation coupling reaction and application of catalyst
  • Preparation method of double-interface catalyst for one-process hydrogen production-hydrogenation coupling reaction and application of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] 1) Mix and disperse self-made carbon nanocoils (CNCs) with ethanol to form a uniform suspension, the concentration of the sample is 0.01g / ml, coat the surface of the glass sheet, evaporate to dryness and place it in the atomic layer deposition chamber, the chamber The pressure is 70Pa, and the flow rate of the carrier gas is fixed during the deposition process.

[0045] 2) Aluminum oxide film is deposited on the surface of carbon helix by atomic layer deposition technology. The deposition parameters are set as follows: the reaction temperature is 150° C., the temperature of the reaction source trimethylaluminum and water is 25° C., and the flow rate of nitrogen gas is 50 sccm. First pulse trimethylaluminum vapor into the deposition chamber with a pulse time of 0.02 s, a hold time of 5 s, and a purge time of 15 s; then pulse water vapor into the deposition chamber with a pulse time of 0.1 s and a hold time of 15 s. The sweeping time is 20s, and a deposition cycle is com...

Embodiment 2

[0053] The test was carried out with the same method as in Example 1, and the difference from Example 1 was that the number of cycles of the polyimide organic thin film of the sacrificial layer was 80 cycles. At this time Al 2 o 3 / Ni-Pt / TiO 2 The yield of aniline on the catalyst reaches 50% within 0.5 hours, and reaches more than 98% within 3 hours. This indicates that the intrinsic activity of the catalyst can be changed by changing the thickness of the sacrificial layer.

Embodiment 3

[0055] 1) TiO 2 The nanowires are mixed with ethanol to form a uniform suspension, the concentration of the sample is 0.05g / ml, coated on the surface of the glass sheet, evaporated to dryness and placed in the atomic layer deposition chamber, the chamber pressure is 50Pa, the carrier gas during the deposition process The traffic is fixed.

[0056] 2) on TiO 2 Platinum nanoparticles are deposited on the surface of the nanowires. The set deposition parameters are: The set deposition parameters are: the reaction temperature is 220°C, the temperature of the reaction source trimethylcyclopentadiene platinum is 60°C, the ozone or oxygen temperature is 2°C, and the nitrogen flow rate is 50sccm . First pulse trimethylmethylcyclopentadiene platinum vapor into the deposition chamber, the pulse time is 1s, the hold time is 10s, and the purge time is 25s; then pulse oxygen into the deposition chamber, the pulse time is 0.1s, the hold time is 25s. is 12s, and the purging time is 30s, s...

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Abstract

The invention provides a preparation method of a double-interface catalyst for a one-process hydrogen production-hydrogenation coupling reaction. Needed metal nano particles, metal oxide and an organic film are deposited on nano fibers in sequence by utilizing an atom-layer deposition technology; and then, after heat treatment and reduction, a controllable multi-interface and multifunctional catalyst is obtained. The double-interface catalyst has the advantages of controllable particle sizes, uniformity in dispersion and controllable metal-oxide interfaces.

Description

technical field [0001] The invention belongs to a method for preparing a catalyst and an application of the catalyst, in particular to a method for preparing a hydrogen production-hydrogenation coupled reaction double-interface catalyst and the application of the catalyst. Background technique [0002] Hydrogenation is an important method for preparing various chemical products. In industry, hydrogen production and hydrogenation are usually separated. Metallic heterogeneous catalysts are usually used to catalyze carbon monoxide water-gas shift, methanol decomposition, or methane reforming to obtain hydrogen-containing mixed gas, and then obtain high-purity hydrogen through pressure swing adsorption or membrane separation. The hydrogenation process uses high-purity high-pressure hydrogen to achieve efficient hydrogenation under the catalysis of specific metal hydrogenation catalysts. If hydrogen production and selective hydrogenation can be coupled, the process cost can be ...

Claims

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Application Information

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IPC IPC(8): B01J23/89B01J23/46B01J23/72C07C209/36C07C211/46C07C211/45C07C13/20C07C5/11C07C1/26C07C15/04C07D307/33
CPCY02P20/52B01J23/892B01J23/462B01J23/468B01J23/72C07C1/26C07C5/11C07C209/36C07C2523/46C07D307/33
Inventor 覃勇张斌葛会宾谷晓敏梁浩杰
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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