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Title: Segregation at CuxPd1-x alloy hydrogen purification membranes

Abstract

CuxPd1-x alloy membranes have exhibited sulfur tolerance in their application as hydrogen purification membranes. The surfaces of such membranes are known to have compositions that differ from those of the bulk and furthermore, compositions that vary with environment. XPS, LEIS and hydrogen adsorption have been used to characterize the surfaces of a Cu30Pd70 membrane over temperatures ranging from 300 – 1000 K. On timescales of ~1 hour, the surface is found to equilibrate with the near surface region at all temperatures above 300 K but is only equilibrated with the bulk at temperatures in excess of 800 K. The clean alloy surface is Cu rich, but once modified by the adsorption of sulfur the surface exposes only Pd.

Authors:
; ; ;
Publication Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
Sponsoring Org.:
USDOE - Office of Fossil Energy (FE)
OSTI Identifier:
913197
Report Number(s):
DOE/NETL-IR-2007-096
TRN: US200802%%592
DOE Contract Number:  
None cited
Resource Type:
Conference
Resource Relation:
Conference: ACS 233rd National Meeting, Chicago, IL, Mar. 25-29, 2007
Country of Publication:
United States
Language:
English
Subject:
08 HYDROGEN; ADSORPTION; ALLOYS; HYDROGEN; MEMBRANES; PURIFICATION; SEGREGATION; SULFUR; TOLERANCE; X-RAY PHOTOELECTRON SPECTROSCOPY

Citation Formats

Gellman, A J, Ye, P, Miller, J B, and Matranga, C S. Segregation at CuxPd1-x alloy hydrogen purification membranes. United States: N. p., 2007. Web.
Gellman, A J, Ye, P, Miller, J B, & Matranga, C S. Segregation at CuxPd1-x alloy hydrogen purification membranes. United States.
Gellman, A J, Ye, P, Miller, J B, and Matranga, C S. Thu . "Segregation at CuxPd1-x alloy hydrogen purification membranes". United States. doi:.
@article{osti_913197,
title = {Segregation at CuxPd1-x alloy hydrogen purification membranes},
author = {Gellman, A J and Ye, P and Miller, J B and Matranga, C S},
abstractNote = {CuxPd1-x alloy membranes have exhibited sulfur tolerance in their application as hydrogen purification membranes. The surfaces of such membranes are known to have compositions that differ from those of the bulk and furthermore, compositions that vary with environment. XPS, LEIS and hydrogen adsorption have been used to characterize the surfaces of a Cu30Pd70 membrane over temperatures ranging from 300 – 1000 K. On timescales of ~1 hour, the surface is found to equilibrate with the near surface region at all temperatures above 300 K but is only equilibrated with the bulk at temperatures in excess of 800 K. The clean alloy surface is Cu rich, but once modified by the adsorption of sulfur the surface exposes only Pd.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Mar 01 00:00:00 EST 2007},
month = {Thu Mar 01 00:00:00 EST 2007}
}

Conference:
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