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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.
Authors:
 [1] ;  [2] ;  [3] ;  [4]
  1. (Hinsdale, IL)
  2. (Lombard, IL)
  3. (Napersville, IL)
  4. (Lisle, IL)
Publication Date:
OSTI Identifier:
870683
Report Number(s):
US 5573737
DOE Contract Number:
W-31109-ENG-38
Resource Type:
Patent
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; functionally; gradient; material; membrane; reactor; converting; methane; gas; value-added-products; outer; tube; perovskite; contacts; air; inner; tube; contacts; methane; gas; zirconium; oxide; bonding; layer; perovskite; zirconium; oxide; layers; bonding; layer; layers; mixture; perovskite; zirconium; oxide; layers; transitioning; excess; perovskite; excess; zirconium; oxide; transition; layers; match; thermal; expansion; coefficients; physical; properties; materials; methane gas; methane gas; methane gas; membrane reactor; membrane reactor; oxide layers; transition layer; expansion coefficient; physical properties; inner tube; thermal expansion; oxide layer; outer tube; zirconium oxide; zirconium oxide; zirconium oxide; zirconium oxide; membrane reactors; bonding layer; bonding layer; match thermal; converting methane; expansion coefficients; ethane gas; ethane gas; ethane gas; gradient material; gradient material; functionally gradient; functionally gradient; value-added product; contacts air /422/428/