Using nanoporous carbon membranes in fuel cells

ABSTRACTWe have synthesized nanoporous carbon membranes that have monodisperse pores of 4–5 Å. These membranes have excellent size and shape selectivity that makes them an ideal candidate for use as separators in fuel cells. The selectivity of these membranes to gases such as N2, O2 and water gas [carbon monoxide and hydrogen] were measured using a permeation testing unit. These membranes were then tested as separators in fuel cells.

Download Full-text

Cyclic water gas shift reactor (CWGS) for carbon monoxide removal from hydrogen feed gas for PEM fuel cells

Chemical Engineering Journal ◽

10.1016/j.cej.2007.03.046 ◽

2007 ◽

Vol 134 (1-3) ◽

pp. 168-174 ◽

Cited By ~ 43

Author(s):

Vladimir Galvita ◽

Kai Sundmacher

Keyword(s):

Carbon Monoxide ◽

Fuel Cells ◽

Pem Fuel Cells ◽

Water Gas Shift ◽

Water Gas

Download Full-text

Carbon Monoxide Induced Metabolic Shift in the Carboxydotrophic Parageobacillus thermoglucosidasius DSM 6285

Microorganisms ◽

10.3390/microorganisms9051090 ◽

2021 ◽

Vol 9 (5) ◽

pp. 1090

Author(s):

Habibu Aliyu ◽

Ronnie Kastner ◽

Pieter de Maayer ◽

Anke Neumann

Keyword(s):

Carbon Monoxide ◽

Alternative Energy ◽

Redox Balance ◽

Biotechnological Potential ◽

Alternative Pathways ◽

Biological Water ◽

Wgs Reaction ◽

Water Gas ◽

Further Development ◽

Parageobacillus Thermoglucosidasius

Parageobacillus thermoglucosidasius is known to catalyse the biological water gas shift (WGS) reaction, a pathway that serves as a source of alternative energy and carbon to a wide variety of bacteria. Despite increasing interest in this bacterium due to its ability to produce biological hydrogen through carbon monoxide (CO) oxidation, there are no data on the effect of toxic CO gas on its physiology. Due to its general requirement of O2, the organism is often grown aerobically to generate biomass. Here, we show that carbon monoxide (CO) induces metabolic changes linked to distortion of redox balance, evidenced by increased accumulation of organic acids such as acetate and lactate. This suggests that P. thermoglucosidasius survives by expressing several alternative pathways, including conversion of pyruvate to lactate, which balances reducing equivalents (oxidation of NADH to NAD+), and acetyl-CoA to acetate, which directly generates energy, while CO is binding terminal oxidases. The data also revealed clearly that P. thermoglucosidasius gained energy and grew during the WGS reaction. Combined, the data provide critical information essential for further development of the biotechnological potential of P. thermoglucosidasius.

Download Full-text

Temperature- and pressure-dependent transient analysis of single component permeation through nanoporous carbon membranes

Carbon ◽

10.1016/s0008-6223(01)00262-7 ◽

2002 ◽

Vol 40 (7) ◽

pp. 1029-1041 ◽

Cited By ~ 22

Author(s):

Michael S. Strano ◽

Henry C. Foley

Keyword(s):

Transient Analysis ◽

Nanoporous Carbon ◽

Single Component ◽

Carbon Membranes ◽

Temperature And Pressure

Download Full-text

Modeling of nitrogen separation from natural gas through nanoporous carbon membranes

Journal of Natural Gas Science and Engineering ◽

10.1016/j.jngse.2015.08.040 ◽

2015 ◽

Vol 26 ◽

pp. 1278-1284 ◽

Cited By ~ 7

Author(s):

Abdulrahman A. Al-Rabiah ◽

Abdelhamid M. Ajbar ◽

Moustafa A. Soliman ◽

Fahad A. Almalki ◽

Omar Y. Abdelaziz

Keyword(s):

Natural Gas ◽

Nanoporous Carbon ◽

Carbon Membranes

Download Full-text

Development of a Medium-Size Steam Reformer for CHP Applications Based on PEM Fuel Cells

Volume 3: Controls, Diagnostics and Instrumentation; Cycle Innovations; Marine ◽

10.1115/gt2010-23791 ◽

2010 ◽

Author(s):

Giovanni Pisani ◽

Alberto Zerbinato ◽

Carlo Tregambe ◽

Ernesto Benini

Keyword(s):

Carbon Monoxide ◽

Hydrogen Production ◽

Pem Fuel Cells ◽

Water Gas Shift ◽

Medium Size ◽

Steam Reformer ◽

Fuel Processor ◽

Conversion Performance ◽

Conversion Efficiencies ◽

Water Gas

This paper describes technological of a fuel processor for hydrogen production able to convert 10 cubic meters of methane per hour. This device has been developed to feed hydrogen CHP suitable for the most common residential applications. The measured conversion efficiencies are extremely high: after the steam reformer the results are 76%H2; 18%CO2; 0,5%CH4; 5%CO; but the carbon monoxide is totally reduced throughout the water gas shift and the partial oxidation which contemporarily increase the hydrogen to over 77%. According to these results, this fuel processor is one of the first middle sized reformer to achieve, at comparable costs per cubic meter, conversion performance that were normally obtained only by industrial reforming plants.

Download Full-text