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Title: Functionally gradient material for membrane reactors to convert methane gas into value-added products

A functionally gradient material for a membrane reactor for converting methane gas into value-added-products includes an outer tube of perovskite, which contacts air; an inner tube which contacts methane gas, of zirconium oxide, and a bonding layer between the perovskite and zirconium oxide layers. The bonding layer has one or more layers of a mixture of perovskite and zirconium oxide, with the layers transitioning from an excess of perovskite to an excess of zirconium oxide. The transition layers match thermal expansion coefficients and other physical properties between the two different materials.
Inventors:
 [1];  [2];  [3];  [4]
  1. (Hinsdale, IL)
  2. (Lombard, IL)
  3. (Napersville, IL)
  4. (Lisle, IL)
Issue Date:
OSTI Identifier:
870683
Assignee:
United States of America as represented by United States (Washington, DC) ANL
Patent Number(s):
US 5573737
Contract Number:
W-31109-ENG-38
Research Org:
Argonne National Laboratory (ANL), Argonne, IL
Country of Publication:
United States
Language:
English
Subject:
functionally; gradient; material; membrane; reactors; convert; methane; gas; value-added; products; reactor; converting; value-added-products; outer; tube; perovskite; contacts; air; inner; zirconium; oxide; bonding; layer; layers; mixture; transitioning; excess; transition; match; thermal; expansion; coefficients; physical; properties; materials; methane gas; membrane reactor; oxide layers; transition layer; expansion coefficient; physical properties; inner tube; thermal expansion; oxide layer; outer tube; zirconium oxide; membrane reactors; bonding layer; match thermal; converting methane; expansion coefficients; ethane gas; gradient material; functionally gradient; value-added product; contacts air; /422/428/

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