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Catalyst and device for preparing high-purity hydrogen through electrocatalytic water-vapor shift reaction

A technology of water vapor shift and catalyst, applied in the field of energy chemistry, to achieve the effects of mild reaction conditions, good stability, and large hydrogen production

Active Publication Date: 2020-02-25
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, direct production of high-purity H under mild conditions 2 Important research significance, but also extremely challenging

Method used

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  • Catalyst and device for preparing high-purity hydrogen through electrocatalytic water-vapor shift reaction
  • Catalyst and device for preparing high-purity hydrogen through electrocatalytic water-vapor shift reaction

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Dissolve 2 mL of 0.1 M chloroplatinic acid aqueous solution at 25 °C in 100 μL min -1 Add it dropwise to the ethanol and water dispersion containing 100mg graphene at a speed of 30°C, dip and stir until dry to obtain a solid powder; then place the obtained solid powder in a tube furnace, heat up to 400°C, and heat up to 400°C at 50 %H 2 / Ar atmosphere at 60mL min -1 Treat at the flow rate for 4 hours, cool down to 30 °C, switch to 10% O 2 / Ar atmosphere, treated for 12 hours to obtain the metal-supported anode catalyst Pt@graphene.

Embodiment 2

[0021] Dissolve 5 mL of 0.3M chloroauric acid aqueous solution at 50°C in 200 μL min -1 Add dropwise at a speed of 300mg molybdenum carbide to methanol and water dispersion, dip and stir at 50°C until dry to obtain a solid powder; then place the obtained solid powder in a tube furnace, heat up to 300°C, at 80°C %H 2 / Ar atmosphere at 100mL min -1 Treat at the flow rate for 2 hours, cool down to 50 °C, switch to 2% O 2 / Ar atmosphere, and treated for 10 hours, the metal-supported anode catalyst Au@MoC was obtained.

Embodiment 3

[0023] Dissolve 20 mL of 0.01M ferric nitrate aqueous solution at 25°C in 100 μL min -1 Add it dropwise to the ethylene glycol and water dispersion containing 200mg of nitrogen-doped XC-72R, dip and stir at 25°C until dry to obtain a solid powder; then place the obtained solid powder in a tube furnace and heat up to 500°C at 40% H 2 / Ar atmosphere at 50mL min -1Treat at the flow rate for 8 hours, cool down to 25 °C, switch to 1% O 2 / Ar atmosphere, treated for 24 hours to obtain a metal-supported anode catalyst Fe@N-XC-72R.

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Abstract

The invention relates to applications of a catalyst and a device in a reaction for preparing high-purity hydrogen through an electrocatalytic water-vapor shift reaction. According to the invention, based on the application, a process for converting carbon monoxide and water into hydrogen and carbon dioxide at a normal temperature under a normal pressure is achieved, the purity of the cathode product hydrogen is up to 99.99%, and the separation is not required; and the method is mild in reaction conditions, the cathode product and the anode product are completely separated, the obtained hydrogen is high in purity and is not required to be further separated, and the energy efficiency of the whole reaction is high.

Description

technical field [0001] The invention relates to an anode catalyst for preparing high-purity hydrogen by electrocatalytic water vapor shift reaction and a device thereof, belonging to the field of energy chemistry, in particular to the preparation of hydrogen energy. Background technique [0002] The water vapor shift reaction is carbon monoxide (CO) and water (H 2 O) reacts to form hydrogen gas (H 2 ) and carbon dioxide (CO 2 ) process, which is often applied in the hydrogen production industry and ammonia synthesis industry using coal, oil and natural gas as raw materials (J.A.Rodriguez, S.D. Senanayake et al. Accounts. Chem. Res., 47, 773 (2014)). In addition, the water vapor shift reaction is also often used for H 2 Removal of small amounts of CO in products (C. Ratnasamy, J.P. Wagner. Catal. Rev., 51, 325 (2009)). From a thermodynamic point of view, the water vapor shift reaction is an exothermic reaction, and low temperature is more conducive to the conversion of CO...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/06C25B1/02C25B9/08C25B9/19
CPCC25B1/02C25B9/19C25B11/091Y02E60/36
Inventor 邓德会崔晓菊陈瑞雪苏海燕于良包信和
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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