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Catalyst for hydrogen production by methanol reforming and preparation method of catalyst

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

Active Publication Date: 2019-08-02
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 of catalyst
  • Catalyst for hydrogen production by methanol reforming and preparation method of catalyst
  • Catalyst for hydrogen production by methanol reforming and preparation method of catalyst

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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 53 mg of chloroplatinic acid, 1230 mg of ammonium molybdate, and 50 mg of mesoporous zinc oxide and dissolve them in 5 mL of water; then ultrasonically disperse them at a frequency of 120 kHz for 2 h. Then the mixed solution was placed in a water bath at 60°C and stirred to remove most of the water solvent; the obtained sample was placed in a vacuum oven and dried at 80°C for 24 hours, then roasted at 500°C for 4 hours, ground, pressed into tablets, and granulated after sieving, 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 carrie...

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 catalyst for hydrogen production by methanol reforming and a preparation method of the catalyst. The preparation method at least comprises the following steps: firstly, dispersing platinum metal compounds, molybdenum metal compounds and mesoporous zinc oxide in water to obtain a mixed solution; then, heating and stirring the mixed solution to evaporate and remove water, and performing vacuum drying and roasting to obtain a solid product; grinding and sheeting the solid product, and performing particle screening; finally, reducing the solid product after particle screening and then performing carburizing and carbonizing to obtain the Zn-Pt / MoC catalyst for hydrogen production by methanol reforming. The catalyst obtained with the preparation method can efficiently and stably catalyze methanol steam reforming to produce hydrogen under the conditions of low temperature and normal pressure (120-160 DEG C, 1 atm), and no byproduct carbon monoxide is generated in thereaction process, so that the catalyst has good application prospect.

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 Applications(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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