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Catalyst for hydrogen production by methanol reforming and preparation method thereof

A reforming hydrogen production and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, hydrogen, etc., can solve the problems of low hydrogen production activity, poor stability, and easy production of by-product carbon monoxide, etc., to achieve stable reaction The effect of good performance and wide application prospect

Active Publication Date: 2022-03-01
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a methanol reforming catalyst for hydrogen production and a preparation method thereof, which is used to solve the problem that the methanol reforming catalyst prepared in the prior art has insufficient hydrogen production activity under low temperature conditions. High, poor stability, easy to produce by-products such as carbon monoxide

Method used

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  • Catalyst for hydrogen production by methanol reforming and preparation method thereof
  • Catalyst for hydrogen production by methanol reforming and preparation method thereof
  • Catalyst for hydrogen production by methanol reforming and preparation method thereof

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preparation example Construction

[0032] The invention provides a method for preparing a methanol reforming hydrogen production catalyst, such asfigure 1 As shown, the preparation method at least includes the following steps:

[0033] Firstly, step S1 is performed to disperse platinum metal compound, molybdenum metal compound and mesoporous zinc oxide in water to obtain a mixed solution.

[0034] As an example, in this step, the platinum metal compound includes one or more combinations of ammonium hexachloroplatinate, chloroplatinic acid, platinum dichloride, etc., and the platinum content of the platinum metal compound accounts for the mass of the catalyst The fraction is between 0.01wt% and 5.0wt%. For example, the platinum content of the platinum metal compound can be 0.01wt%, 0.05wt%, 0.1wt%, 0.5wt%, 1.0wt%, 1.5wt%, 2.0wt%, 3.0wt% in the mass fraction of the catalyst , 4.0wt%, 5.0wt% and so on. When determining the mass of the required catalyst, the mass fraction of platinum in the catalyst can be used t...

Embodiment 1

[0053] Embodiment 1: the preparation of Zn-Pt / MoC catalyst

[0054] Accurately weigh 53mg of chloroplatinic acid, 1230mg of ammonium molybdate, and 50mg of mesoporous zinc oxide and dissolve them in 5mL of water; then ultrasonically disperse them at a frequency of 120kHz for 2h. Then the mixed solution was placed in a 60°C water bath and stirred to remove most of the water solvent; the obtained sample was placed in a vacuum drying oven to dry at 80°C for 24 hours, then roasted at 500°C for 4 hours, ground, pressed into tablets, and granulated after screening, then put the sample into Tube furnace; first pass 5% H 2 / Ar mixed gas was programmed to heat up to 350°C and kept constant for 2h, then 10% CH 4 / H 2 The temperature of the mixed gas was raised to 750 °C and kept for 3 hours to carbonize the sample. After the temperature of the sample dropped to room temperature, 1% O 2 / Ar mixed gas is passivated, finally obtains embodiment 1 catalyst; The present invention carries o...

Embodiment 2

[0055] Embodiment 2: the preparation of Zn-Pt / MoC catalyst

[0056]Accurately weigh 53mg of chloroplatinic acid, 1230mg of ammonium molybdate, and 100mg of mesoporous zinc oxide and dissolve them in 5mL of water; then ultrasonically disperse them at a frequency of 120kHz for 2h, move the resulting solution to a 60°C water bath and stir for 48h, and then ultrasonically disperse for 4h again. Then the mixed solution was placed in a 60°C water bath and stirred to remove most of the water solvent; the obtained sample was placed in a vacuum drying oven to dry at 80°C for 24 hours, then roasted at 500°C for 4 hours, ground, pressed into tablets, and granulated after screening, then put the sample into Tube furnace; first pass 5% H 2 / Ar mixed gas was programmed to heat up to 350°C and kept constant for 2h, then 10% CH 4 / H 2 The temperature of the mixed gas was raised to 750 °C and kept for 3 hours to carbonize the sample. After the temperature of the sample dropped to room temper...

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Abstract

The invention provides a methanol reforming hydrogen production catalyst and a preparation method thereof. The preparation method at least comprises: first, dispersing a platinum metal compound, a molybdenum metal compound and mesoporous zinc oxide in water to obtain a mixed solution; then, heating and stirring The mixed solution is evaporated to remove water, then vacuum-dried and roasted to obtain a solid product; then, the solid product is sequentially ground, tableted, and particle screened; finally, the solid product after the particle screen is Reduction is carried out first, and then carburizing and carbonization process is carried out to obtain Zn-Pt / MoC catalyst for methanol reforming hydrogen production. The catalyst obtained by using the preparation method of the present invention can efficiently and stably catalyze methanol steam reforming to produce hydrogen under low temperature and normal pressure conditions (120-160° C., 1 atm), and the reaction process does not produce by-product carbon monoxide, and has good application prospects .

Description

technical field [0001] The invention belongs to the technical field of hydrogen production from methanol, in particular to a catalyst for hydrogen production by reforming methanol and a preparation method thereof. Background technique [0002] Hydrogen energy, as a clean secondary energy source, has great development potential and has attracted extensive attention from all over the world. At present, hydrogen fuel cells are one of the new technology platforms for efficient and clean utilization of hydrogen energy, but to make full use of hydrogen energy, it is necessary to overcome a series of difficulties including hydrogen production and hydrogen storage. However, if the existing energy transportation facilities can be used to send the raw materials for hydrogen production to the terminal and perform in-situ hydrogen production, the disadvantages of hydrogen storage can be avoided to a large extent. Among them, the use of methanol, ethanol, gasoline and other liquid fuels...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/22C01B3/32
CPCB01J27/22C01B3/326C01B2203/1041C01B2203/1223C01B2203/0233
Inventor 张军蔡夫锋孙予罕
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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