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Batch methods for enriching trace impurities in hydrogen gas for their further analysis

Patent ·
OSTI ID:1144007
; ; ;

Provided herein are batch methods and devices for enriching trace quantities of impurities in gaseous mixtures, such as hydrogen fuel. The methods and devices rely on concentrating impurities using hydrogen transport membranes wherein the time period for concentrating the sample is calculated on the basis of optimized membrane characteristics, comprising its thickness and permeance, with optimization of temperature, and wherein the enrichment of trace impurities is proportional to the pressure ratio P.sub.hi/P.sub.lo and the volume ratio V.sub.1/V.sub.2, with following detection of the impurities using commonly-available detection methods.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-06CH11357
Assignee:
Uchicago Argonne, LLC (Chicago, IL)
Patent Number(s):
8,778,694
Application Number:
12/835,614
OSTI ID:
1144007
Country of Publication:
United States
Language:
English

References (6)

A dense Pd/Ag membrane reactor for methanol steam reforming: Experimental study journal June 2005
Enrichment and mass spectrometric analysis of trace impurity concentrations in gases journal January 1990
Preparation of thin palladium composite membrane tube by a CVD technique and its hydrogen permselectivity journal June 2005
Inorganic membranes for hydrogen production and purification: A critical review and perspective journal October 2007
High-Flux Palladium Membranes Based on Microsystem Technology
  • Keurentjes, Jos T. F.; Gielens, Frank C.; Tong, H. D.
  • Industrial & Engineering Chemistry Research, Vol. 43, Issue 16, p. 4768-4772 https://doi.org/10.1021/ie0341202
journal August 2004
Hydrogen quality for fuel cell vehicles – A modeling study of the sensitivity of impurity content in hydrogen to the process variables in the SMR–PSA pathway journal August 2009

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