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Highly stable molybdenum-contained mixed conducting compact oxygen permeable membrane material, and preparation method and application thereof

A hybrid conductor, oxygen-permeable membrane technology, applied in semi-permeable membrane separation, chemical instruments and methods, membrane technology, etc., to achieve the effects of good chemical and structural stability, improved structural stability, and high oxygen transmission rate

Active Publication Date: 2010-12-01
NANJING TECH UNIV
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  • Abstract
  • Description
  • Claims
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The present invention preferably 0.05≤y≤0.2

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  • Highly stable molybdenum-contained mixed conducting compact oxygen permeable membrane material, and preparation method and application thereof
  • Highly stable molybdenum-contained mixed conducting compact oxygen permeable membrane material, and preparation method and application thereof
  • Highly stable molybdenum-contained mixed conducting compact oxygen permeable membrane material, and preparation method and application thereof

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Abstract

The invention relates to high-stability Mo-based mixed conductor compact oxygen permeable membrane material, and a preparation method and application of the material. The material is perovskite crystal-typed composite oxide with the general formula of C1-xC'xD1-y-y'D'y'MoyO3-Delta; wherein, the Delta is oxygen lattice defective number; C and C' are any one element out of Ce, Pr, Nd, Sm, Gd, Ca, Sr, Ba, La and Y; D and D' are any one element out of Sc, Ti, Cr, Mn, Fe, Zn, Al, Zr, Nb and W; x is not less than 0 and not more than 1; y is less than 0 and not more than 1; y' is not less than 0 andnot more than 1-y. The preparation of the material adopts an organic acid complexing method; the film-forming process adopts a single-axis compressing method or plastic extrusion method; the materialhas extremely good stability under high temperature and hydrogen condition and is suitable for long-term working under film reaction condition. The method of the invention can be used for the high-stability Mo-based mixed conductor compact oxygen permeable membrane material in the fields of oxygen permeable membranes, catalytic membrane reactor and solid-state electrochemistry.

Description

Highly stable molybdenum-based mixed conductor dense oxygen-permeable membrane material and its preparation method and application technical field The invention belongs to the field of design and development of dense oxygen-permeable membrane materials of mixed conductors, and in particular relates to a highly stable molybdenum-based mixed conductor dense oxygen-permeable membrane material and its preparation method and application. Background technique There are abundant natural gas reserves in nature. With the increasing shortage of oil resources, how to convert natural gas into basic organic chemical products has become a problem of great concern. One of the important directions is to use partial oxidation (POM) to convert natural gas into synthesis gas (Ashcroft et al., Nature, 1990, 344, 319; Hickman et al., Science, 1993, 259, 343). Then prepare liquid fuel and chemical products through F-T reaction or other reaction processes. The key to this method is the acquisit...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/02
Inventor 金万勤董学良徐南平
Owner NANJING TECH UNIV
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