The use of carbon monoxide and water gas as the flame-forming agent in the thermionic detector

1986 ◽  
Vol 22 (1-6) ◽  
pp. 95-98
Author(s):  
V. G. Berezkin ◽  
T. G. Andronikashvili ◽  
G. V. Tsitsishvili ◽  
Z. A. Gvelesiani
Keyword(s):  
Carbon Monoxide ◽  
Water Gas ◽  
Flame Forming

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

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.

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

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.

Activity of Au, Ni, and Au-Ni catalysts in the water-gas shift reaction and carbon monoxide oxidation

2014 ◽  
Vol 55 (3) ◽  
pp. 311-318 ◽  
Author(s):  
S. A. Nikolaev ◽  
E. V. Golubina ◽  
L. M. Kustov ◽  
A. L. Tarasov ◽  
O. P. Tkachenko
Keyword(s):  
Carbon Monoxide ◽  
Carbon Monoxide Oxidation ◽  
Water Gas Shift ◽  
Water Gas Shift Reaction ◽  
Ni Catalysts ◽  
Shift Reaction ◽  
Water Gas

THE DECOMPOSITION OF ETHYL ALCOHOL OVER SOME POLY-COMPONENT CATALYSTS

1934 ◽  
Vol 10 (6) ◽  
pp. 743-758 ◽  
Author(s):  
E. H. Boomer ◽  
H. E. Morris
Keyword(s):  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
Ethyl Alcohol ◽  
Quantitative Data ◽  
Carbon Oxides ◽  
Liquid Products ◽  
Secondary Reactions ◽  
Water Gas ◽  
Alcohol Alcohol ◽  
Hydrogenation Of Ethylene

Numerous experiments have been carried out on the decomposition of alcohol, alcohol and water, and alcohol and carbon dioxide mixtures over poly-component catalysts at temperatures up to 500 °C. Quantitative data on the gaseous and the liquid products were obtained. The properties of the poly-component catalysts, as evidenced by the simple primary and secondary reactions, have been shown to be qualitatively those of the single components.Methane can be produced in one or more of several secondary reactions, namely, the decomposition of acetaldehyde, the hydrogenation of carbon oxides and the decomposition of ethylene. Ethane can be produced in one or both of two reactions consisting of auto-oxidation and reduction of the alcohol, or the secondary hydrogenation of ethylene, confirming previous work. Carbon dioxide, in most cases, is formed as a result of the water-gas reaction and the decomposition of carbon monoxide. In other cases its origin is obscure. The results of certain experiments in which carbon dioxide and hydrogen were the major constituents of the off-gas cannot be explained in the same way. Reactions involving ketene decomposition and polymerization, and hydration of alcohol, have been suggested as possible explanations.

scholarly journals Deep Conversion of Carbon Monoxide to Hydrogen and Formation of Acetate by the Anaerobic ThermophileCarboxydothermus hydrogenoformans

2011 ◽  
Vol 2011 ◽  
pp. 1-4 ◽  
Author(s):  
Anne M. Henstra ◽  
Alfons J. M. Stams
Keyword(s):  
Carbon Monoxide ◽  
Hydrogen Gas ◽  
Strictly Anaerobic ◽  
Gibbs Free Energy Change ◽  
Batch Cultures ◽  
Co Conversion ◽  
Low Levels ◽  
Shift Reaction ◽  
Water Gas ◽  
Interesting Alternative

Carboxydothermus hydrogenoformansis a thermophilic strictly anaerobic bacterium that catalyses the water gas shift reaction, the conversion of carbon monoxide with water to molecular hydrogen and carbon dioxide. The thermodynamically favorable growth temperature, compared to existing industrial catalytic processes, makes this organism an interesting alternative for production of cheap hydrogen gas suitable to fuel CO-sensitive fuel cells in a future hydrogen economy, provided sufficiently low levels of CO are reached. Here we study CO conversion and final CO levels in cultures ofC. hydrogenoformansgrown in batch cultures that were started with a 100% CO gas phase with and without removal of formed CO2. Final CO levels were 117 ppm without CO2removal and below 2 ppm with CO2removal. The Gibbs free energy change calculated with measured end concentrations and the detection of acetate suggest thatC. hydrogenoformansshifted from a hydrogenogenic to an acetogenic metabolism.

Sign in / Sign up

Export Citation Format

Share Document