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pt/α‑moc 1‑x Supported Catalyst and Its Synthesis and Application

The technology of a supported catalyst and a synthesis method, applied in the field of catalysis, can solve the problems of inability to exist stably, the activity of noble metal catalysts is low, and does not meet the requirements of use, and achieves the effects of inhibiting methanol decomposition reaction, improving coverage and wide application prospects.

Active Publication Date: 2017-08-04
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional Cu-based catalysts cannot exist stably in the liquid phase, and the activity of oxide-supported noble metal catalysts is extremely low, which does not meet the requirements for use.

Method used

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  • pt/α‑moc <sub>1‑x</sub> Supported Catalyst and Its Synthesis and Application
  • pt/α‑moc <sub>1‑x</sub> Supported Catalyst and Its Synthesis and Application
  • pt/α‑moc <sub>1‑x</sub> Supported Catalyst and Its Synthesis and Application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1Pt / α-MoC 1-x Synthesis of (100% α) catalyst (MoO 3 200nm)

[0033] Dissolve 1 g of the platinum precursor salt chloroplatinic acid hexahydrate in 10 mL of water, soak in H 2 PtCl 6 solution to MoO 3 on the carrier, stirred at room temperature until dry, and then dried in a vacuum oven at 60°C, then placed the catalyst in a muffle furnace for calcination, and programmed the temperature to 500°C and kept it for 120min. Last at 20% CH 4 / H 2 The carbonization temperature was programmed to 700°C in an atmosphere and kept for 120min.

[0034] Pt / α-MoC synthesized by the present invention 1-x The morphology of supported catalysts was observed by dark field scanning transmission mode of transmission electron microscope, and the bulk phase structure was observed by X-ray diffractometer (XRD).

[0035] The XRD sample preparation method is as follows: the above carbonized catalyst was treated with 0.5% O 2 / Ar passivation gas passivation 8h, can be used for XRD t...

Embodiment 2

[0040] Example 2Pt / MoC x Synthesis of (70%α)

[0041] Dissolve 1 g of the platinum precursor salt chloroplatinic acid hexahydrate in 10 mL of water, soak in H 2 PtCl 6 solution, stirred at room temperature until dry, then dried in a vacuum oven at 60°C, in 20% CH 4 / H 2 The carbonization temperature was programmed to 700°C in an atmosphere and kept for 120min. XRD picture as shown figure 1 (c) shown.

Embodiment 3

[0042] Example 3Pt / MoC x Synthesis of (45%α)

[0043] Dissolve 1g of ammonium heptamolybdate in 10mL of deionized water, stir until completely dissolved, dissolve 1g of the platinum precursor salt chloroplatinic acid hexahydrate in 10mL of water, take the aqueous solution of chloroplatinic acid and add it to the ammonium molybdate solution, stir for 2h until precipitation completely, evaporated to dryness in an oil bath at 100°C, ground it and placed it in an oven at 60°C for 3 hours, and then the catalyst was heated in 20% CH 4 / H 2 carbonized in an atmosphere, the temperature was programmed to 700°C and kept for 120min. XRD picture as shown figure 1 (d) shown.

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PUM

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Abstract

Disclosed are a Pt / α-MoC1-x supported catalyst, and synthesis and uses thereof. Dissolving a platinum precursor salt in water, immersing same onto an MoO3 support, and stirring till dry; placing the solid in a vacuum drying chamber to heat till dry in a temperature between 40℃ and 60℃; placing in a muffle furnace for heating under a temperature program to 400℃ and 500℃, maintaining at the highest temperature for a period of time, and obtaining Pt-MoO3; carbonizing the obtained solid in a carbonized atmosphere of a certain ratio to obtain the Pt / α-MoC1-x catalyst. The Pt / α-MoC1-x supported catalyst is a good catalyst for producing hydrogen using methanol by means of low temperature (150℃ to 190℃) water-phase reformation. The catalytic activity is better than platinum supported on an oxide and platinum supported on non-pure MoC. The invention has relatively high stability in simulations close to a real system.

Description

technical field [0001] The invention belongs to the field of catalysis and relates to a Pt / α-MoC 1-x Supported catalyst and its synthesis and application, specifically related to a water-phase stable, low-temperature and high-efficiency reforming methanol hydrogen production catalyst Pt / α-MoC 1-x Synthetic methods and applications. Background technique [0002] The exhaust gas and solid particles produced by the use of fossil energy far exceed the automatic purification ability of the environment. The development of clean energy is not only the root of solving energy problems, but also the key to solving environmental problems. Hydrogen energy is recognized as a clean, high calorific value energy. The most effective form of hydrogen energy utilization is hydrogen fuel cells. Compared with the combustion reaction of internal combustion engines, hydrogen fuel cells can efficiently convert chemical energy into electrical energy, and the utilization rate has increased by 40% t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/22C01B3/32
CPCB01J23/42B01J27/22C01B3/32
Inventor 马丁林丽利姚思宇
Owner PEKING UNIV
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