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RaDiUS Database Project Description (updated Aug. 2005) |
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Short Title: |
Carbon nanotube membranes and adsorbents for CO2 removal - ER0L |
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Award Number: |
NRELER0L |
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RaDiUS ID: |
43662007563 |
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FY in RaDiUS database: |
2003 |
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Level 1: |
Dept of
Energy |
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Level 2: |
Science |
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Level 3: |
Basic
energy sciences |
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Level 4: |
Materials
sciences and engineering -- Research |
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Budget Authority (in $K): |
$252,539K |
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Total Awards: |
152 |
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Award Type: |
Extramural/Contracts/ |
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Start Date: |
Jul-1999 |
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End Date: |
na |
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Access/Distribution Restriction: |
Distribution
Unlimited - Unrestricted Access |
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Restriction Reason: |
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CRADA Partner: |
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Place of Performance: |
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Place of Performance: State: |
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Performer Name: |
NATIONAL
RENEWABLE ENERGY LABORATORY (NREL) |
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Performer Type: |
FedGov |
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GOLDEN |
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CO |
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Performer Country: |
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Performer Cong. District: |
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Performer Contact Name: |
Restricted |
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Performer Contact Phone: |
Restricted |
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Performer Parent: |
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Total Award Amount (in $K): |
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Average Annual Funding (in $K): |
$185.7 |
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Average Monthly Funding (in $K): |
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FY Total Amount (in $K): |
$244.0 |
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FY Federal Amount (in $K): |
$244.0 |
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FY Non-Federal Amount (in $K): |
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SBIR Award: |
N |
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Clinical Trial: |
N |
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Requester: |
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Award Description: |
TITLE: Carbon
nanotube membranes and adsorbents for CO2 removal -
ER0L :: LONG DESCR: Improved methods are required
for removing CO2 from hydrogen produced by steam reformers and partial
oxidation reactors. This project investigates new hydrogen and methane transparent
membranes, which block CO2, or, alternatively, membranes that transmit CO2
selectively. Our focus is on the transport of gases through well-defined
arrays of small, aligned, graphitic pores. Such pores are produced by forming
carbon nanotubes within alumina templates using
chemical vapor deposition; or by manipulating and arranging single-wall
carbon nanotubes made by laser vaporization. Carbon
nanotube powders also are investigated for
potential use in pressure swing adsorption and to elucidate competitive
adsorption interactions. The properties of both the membranes and the
adsorbents are highly tunable with regard to pore diameter, length, degree of
graphitization, and the number and type of surface chemical groups. Studies
of the fundamental mechanisms governing molecular transport through and
adsorption in well-defined graphitic pores will therefore be possible for the
first time. Unique behaviors and advantages are expected in comparison to,
e.g., zeolites since polarizeable
electron densities are present along the walls of the graphitic pores. The
work is synergistic with and closely related to EE-funded work at NREL, which
is focused on hydrogen storage in single-wall carbon nanotubes.
:: KEYWORDS: Materials Chemistry :: |
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