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Hybrid conductor hydrogen permeation membrane material as well as preparation method and application thereof

A technology of mixed conductors and hydrogen permeable membranes, applied in separation methods, semipermeable membrane separations, chemical instruments and methods, etc., can solve problems that restrict large-scale production and industrial applications, and have not yet developed mixed hydrogen permeable membrane materials. Good long-term chemical stability, improved hydrogen permeability, and improved proton conductivity

Active Publication Date: 2022-08-09
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the field of hydrogen separation membrane research, the hybrid proton-electronic conductor hydrogen permeable membrane has obvious advantages and is widely used. However, a hybrid hydrogen permeable membrane material with both hydrogen separation efficiency and chemical stability has not been developed, which restricts its large-scale production and industrial application

Method used

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  • Hybrid conductor hydrogen permeation membrane material as well as preparation method and application thereof
  • Hybrid conductor hydrogen permeation membrane material as well as preparation method and application thereof
  • Hybrid conductor hydrogen permeation membrane material as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0045] A fluorite-type tungstic acid-based mixed conductor hydrogen permeable membrane material La with in-situ desolubilization of Pd metal nanoparticles 5.5 (W 0.6 Mo 0.4 ) 0.95 Pd 0.05 O 11.25-δ (LWMPd), wherein δ=0~1, wherein the preparation method comprises the following steps:

[0046] (1) Weigh 16.432g La respectively 2 O 3 , 2.424g WO 3 , 1.004g MoO 3 , 0.1122g PdO, add 20mL ethanol after preliminary mixing, carry out ball milling at a speed of 400r / min, take out and dry naturally after 48h.

[0047] (2) The mixed raw material powder obtained by ball milling is placed in a high temperature muffle furnace and heated to 1100°C at a heating rate of 2°C / min, kept for 10 hours, and then lowered to room temperature at a rate of 2°C / min to obtain LWMPd Phase powder. The obtained LWMPd powder is subjected to phase analysis, and the results are as follows figure 1 As shown, the material maintains the original fluorite structure after doping with palladium element, an...

Embodiment 2

[0052] A fluorite-type tungstic acid-based mixed conductor hydrogen permeable membrane material La with in-situ desolubilization of Ni metal nanoparticles 5.5 (W 0.6 Mo 0.4 ) 0.95 Ni 0.05 O 11.25-δ (LWMNi) wherein δ=0~1, and its preparation method comprises the following steps:

[0053] (1) Weigh 16.468g La respectively 2 O 3 , 2.429g WO 3 , 1.005g MoO 3 , 0.0686g NiO, add 20mL ethanol after preliminary mixing, carry out ball milling at a speed of 400r / min, take out and dry naturally after 48h.

[0054] (2) The mixed raw material powder obtained by ball milling is placed in a high temperature muffle furnace and heated to 1100°C at a heating rate of 2°C / min, kept for 10 hours, and then lowered to room temperature at a rate of 2°C / min to obtain LWMNi composition. Phase powder. The obtained LWMNi powder is subjected to phase analysis, and the results are as follows figure 1 As shown in the figure, after doping with nickel element, the material maintains the original fl...

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Abstract

The invention belongs to the technical field of separation membrane materials, and particularly relates to a mixed conductor hydrogen permeation membrane material and a preparation method and application thereof. The chemical general formula of the mixed conductor hydrogen permeation membrane material is Lna (W < 1-b > Xb) < 1-c > McO11.25-delta, wherein Ln is a lanthanide element; x is one or two of transition elements Nb and Mo; m is one of Pd, Ni and Ru; delta is a non-stoichiometric ratio, 0 < = delta < = 1, 5.2 < = a < = 5.8, 0 < = b < = 0.4, and 0 < c < = 0.2. The mixed conductor hydrogen permeation membrane material has excellent hydrogen separation efficiency and chemical stability.

Description

technical field [0001] The invention belongs to the technical field of separation membrane materials, and in particular relates to a mixed conductor hydrogen permeable membrane material and a preparation method and application thereof. Background technique [0002] With the continuous development of society, people's demand for energy is also increasing. Traditional fossil fuels are non-renewable and cause serious pollution to the environment, forcing people to research and develop greener energy sources. Hydrogen energy is an emerging clean energy with many advantages, such as high combustion calorific value, no carbon emission, and wide application scenarios. It is regarded as the ultimate energy in the 21st century. At the same time, as a basic chemical raw material, hydrogen is widely used in important fields such as synthesis of ammonia and methanol. At present, the gas produced by industrial methane-steam reforming for hydrogen production is inevitably mixed with a s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/02B01D67/00B01D53/22C01B3/56
CPCB01D71/024B01D67/0041B01D53/228C01B3/56B01D2323/286B01D2325/24B01D2311/243Y02P20/151
Inventor 薛健翁国伟王海辉
Owner SOUTH CHINA UNIV OF TECH
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