Methanation of carbon monoxide and carbon dioxide over nickel catalyst under the transient state

1987 ◽  
Vol 33 (1) ◽  
pp. 179-184 ◽  
Author(s):  
S. Fujita ◽  
H. Terunuma ◽  
H. Kobayashi ◽  
N. Takezawa
Keyword(s):  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
Nickel Catalyst ◽  
Transient State

Production of Synthetic Petroleum Fuel Through the Absorption of Atmospheric CO2

2009 ◽  
Author(s):  
Stephen G. Pothier ◽  
David Chichka
Keyword(s):  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
Greenhouse Gas ◽  
Nickel Catalyst ◽  
Cobalt Catalyst ◽  
Petroleum Products ◽  
Hydrogen Generator ◽  
Fischer Tropsch ◽  
Petroleum Fuel ◽  
One Year

This paper describes a theoretical device called a Petroleum Synthesizer, which absorbs the greenhouse gas carbon dioxide from the atmosphere and converts it into a synthetic petroleum fuel. The device has four parts: First, a CO2 Scrubber using sodium carbonate reversibly absorbs CO2 from the atmosphere. Simultaneously, a Hydrogen Generator separates water electrolytically to produce hydrogen (H2). Third, a Carbon Monoxide Generator mixes the H2 and the CO2 over a nickel catalyst, changing the constituents into carbon monoxide (CO) and water. Finally, the CO and additional H2 are combined in a cobalt-catalyst Fischer-Tropsch (F-T) Processor to produce gaseous and liquid petroleum products. Calculations show that one watt of electricity supplied for one year would allow the Synthesizer to create 0.420 kg of petroleum products, and absorb 1.314 kg of CO2 from the atmosphere. An acre of solar voltaic panels powering Synthesizers could produce 46,000 kg, or about 14,000 gallons, of petroleum products per acre per year, and absorb 140,000 kg of CO2. By contrast, an acre of corn produces less than 400 gallons of ethanol per year.

Low-temperature partial oxidation of ethanol on Ni/ZnO catalyst

2019 ◽  
pp. 27-36
Author(s):  
N. V. Lapin ◽  
V. V. Grinko ◽  
V. S. Bezhok ◽  
A. F. Vyatkin
Keyword(s):  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
Zinc Oxide ◽  
Nickel Catalyst ◽  
Partial Oxidation ◽  
Methane Content ◽  
Metallic Nickel ◽  
Molar Ratio ◽  
Temperature Range ◽  
Oxidation Of Ethanol

The paper investigates the partial oxidation of ethanol process in a quartz microreactor at atmospheric pressure in the temperature range 300–450 °C on a nickel catalyst (20 wt%) deposited on zinc oxide. Rectified ethanol (an azeotropic mixture of 95.6 wt.% ethanol and 4.4 wt.% water) is fed into the reactor at a rate of 0.4–1.3 g / hour by a peristaltic pump, first into the evaporator, and then as a gas phase into the reactor. Air is used as a source of oxygen which is supplied by an air pump to the reactor and its flow is controlled by a rotameter so that the oxygen-ethanol molar ratio varied between 0.45 and 2.0. The nickel catalyst is prepared by impregnating industrial zinc oxide powder with nickel nitrate, followed by calcination and reduction of nickel oxide to metallic nickel. Analysis of gaseous products is performed on a Tsvet-500 gas chromatograph. The detector is a katharometer.A catalyst Ni/ZnO developed earlier is shown to have high efficiency in the partial oxidation of ethanol at low temperatures. The main products of this process are hydrogen, methane, carbon monoxide and dioxide. With an increase in the oxygen-ethanol molar ratio, the hydrogen content in the products of the process decreases (from 60 to 25 vol.%), carbon dioxide, on the contrary, increases (26 to 65 vol.%). The hydrogen yield is 1 mol per 1 mol of ethanol at a temperature of 450 °C.Carbon monoxide is observed with a low ratio of oxygen-ethanol (up to 0.85). With a higher ratio, carbon monoxide is absent in the entire temperature range studied. The conversion of ethanol proceeds intensively and already at a temperature of 450 °C ethanol is converted almost completely. A high methane content (20–30% vol.%) in reforming products indicates that the initial stage of the process is the oxidation of ethanol followed by decomposition of the resulting acetaldehyde into methane and carbon monoxide.The insignificant water content in the supply mixture leads to an almost complete absence of a shift reaction. Carbon monoxide is then oxidized with oxygen to carbon dioxide. The reduced methane content in comparison with the process of water-steam ethanol reforming can be explained by its partial oxidation to carbon dioxide, which explains the high content of the latter in reforming products. 

scholarly journals Co-methanation of carbon monoxide and carbon dioxide on nickel catalyst suspended in inert solvent.

1985 ◽  
Vol 11 (6) ◽  
pp. 647-654
Author(s):  
Tadaatsu Ido ◽  
Seiichi Yamaoka ◽  
Donghai Shen ◽  
Shigeo Goto
Keyword(s):  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
Nickel Catalyst ◽  
Co Methanation ◽  
Inert Solvent

scholarly journals Controlled atmosphere GMAW welding of transportation vehicles and production machines parts made from 30MnB5 steel

2018 ◽  
Vol 216 ◽  
pp. 03001 ◽  
Author(s):  
Evgeny Ivanayskiy ◽  
Aleksei Ishkov ◽  
Aleksandr Ivanayskiy ◽  
Iakov Ochakovskii
Keyword(s):  
Mechanical Properties ◽  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
Chemical Composition ◽  
Controlled Atmosphere ◽  
Shielding Gas ◽  
Reducing Atmosphere ◽  
Metal Composition ◽  
Gmaw Welding ◽  
Welding Materials

The paper studies the influence of shielding gas on the composition and the structure of weld joint metal of 30MnB5 steel applied in essential parts of automobiles and tractors. The welding was performed in inert, oxidizing and reducing atmospheres. It was established that TIG welding with argon used as shielding gas did not provide the required mechanical properties when using conventional welding materials. Carbon dioxide during MAG welding caused partial burning of alloying elements. Carbon monoxide used as shielding gas was proved to form reducing atmosphere enabling to obtain chemical composition close to the base metal composition. Metallographic examinations were carried out. The obtained results provided full-strength weld, as well as the required reliability and durability of welded components and joints.

Effect of carbon monoxide on the rate of oxidation of charcoal, graphite and coke in carbon dioxide

Carbon ◽  
1970 ◽  
Vol 8 (1) ◽  
pp. 39-53 ◽  
Author(s):  
E.T. Turkdogan ◽  
J.V. Vinters
Keyword(s):  
Carbon Dioxide ◽  
Carbon Monoxide
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