scholarly journals The ratio of the specific heats of hydrogen

1925 ◽  
Vol 109 (750) ◽  
pp. 286-291 ◽  
Keyword(s):  
Carbon Dioxide ◽  
Caustic Soda ◽  
Calcium Chloride ◽  
Phosphorus Pentoxide ◽  
Explosive Mixture ◽  
Present Communication ◽  
Pure Nitrogen ◽  
Specific Heats ◽  
Electrolytic Hydrogen ◽  
Thin Platinum

The investigation of the ratio of the specific heats, c p / c v = γ , of hydrogen described in the present communication was undertaken during the summer of 1923 by the method previously used with air, carbon dioxide, oxygen and nitrogen. The gas used was electrolytic hydrogen, supplied by the British Oxygen Company, and was purified in the same way as the oxygen in the previous experiments, except that the four U-tubes now contained quicklime, caustic soda, and two tubes of calcium chloride, in the order given. Phosphorus pentoxide was, as before, used for the final drying of the gas. The globe A, fig. 1 in the paper of 1924, was, before the commencement of the experiments, filled with pure nitrogen from previous measurements. The purified hydrogen was passed directly into the globe until the nitrogen had been completely displaced, and there was thus no danger that an explosive mixture of hydrogen and oxygen could be formed, which might have been ignited by contact with the thin platinum wires of the bolometer, or, at least, might have formed moisture by slow reaction in contact with the platinum.

scholarly journals The ratio of the specific heats of air and of carbon dioxide

1921 ◽  
Vol 100 (702) ◽  
pp. 27-49 ◽  
Keyword(s):  
Carbon Dioxide ◽  
Theoretical Study ◽  
Energy Content ◽  
Present Communication ◽  
Satisfactory Solution ◽  
Specific Heats ◽  
University Of Berlin ◽  
Theoretical Investigations ◽  
The University ◽  
Solid Bodies

Although our knowledge of the energy-content of solid bodies has been greatly extended by the theoretical investigations of Planck, Einstein and Debye, and by the experiments of Dewar, Nernst and others, the problem in the cases of gases, and especially of vapours, is still far from a satisfactory solution. With the object of providing accurate data for a theoretical study of the energy-content of molecules in gases, the experiments described in this paper were commenced in 1911 in the laboratory of the Physikalisch-Chemisches Institut of the University of Berlin. I desire to express my thanks to Prof. Nernst for the interest he showed in this work, and for many useful suggestions he made during the period 1911-1913, in which I worked in his laboratory. Since air and carbon dioxide have been the object of some very careful investigations by previous experimenters, it was decided that a re-investigation of the ratio of the specific heats, c p / c v , of these gases would be appropriate at the commencement of the research. Other gases, for which the constants are less accurately known, such as ammonia, sulphur dioxide, nitrous oxide and nitrogen, are at present under investigation by a method similar to that described in the present communication. The present results were published in an abstracted form in 1913.

Enhancement of desorption amount of carbon dioxide gas from monoethanolamine solution using ultrasound and calcium chloride

2020 ◽  
Vol 59 (SK) ◽  
pp. SKKD08
Author(s):  
Yuya Kitamura ◽  
Hirokazu Okawa ◽  
Takahiro Kato ◽  
Katsuyasu Sugawara
Keyword(s):  
Carbon Dioxide ◽  
Calcium Chloride ◽  
Carbon Dioxide Gas

A comparison of the compressibilities of some gases with that of nitrogen at pressures below one atmosphere

1950 ◽  
Vol 200 (1061) ◽  
pp. 201-218 ◽  
Keyword(s):  
Carbon Dioxide ◽  
Differential Method ◽  
Linear Extrapolation ◽  
Volume Changes ◽  
Pure Nitrogen ◽  
Molecular Weights ◽  
Nitrous Oxide Oxygen ◽  
The Individual ◽  
Straight Lines ◽  
High Degree

A differential method for comparing the compressibilities of gases at pressures below 1 atm. has been developed in which many of the errors inherent in methods employed previously have been to a large extent eliminated, especially those due to meniscus volume changes and capillary depression. Using pure nitrogen as a standard the low-pressure isothermals of carbon monoxide, carbon dioxide, nitrous oxide, oxygen, ethylene and propane have been determined at a temperature of 22-05° C. The deviations of the individual points from straight lines do not in most cases exceed 2 parts in 100,000. In no case, even with propane, was any curvature in the isotherms detectable. The contention of Moles and other recent workers that the molecular weights of liquefiable gases can be determined to a high degree of accuracy by linear extrapolation is rendered highly probable by this fresh evidence.

scholarly journals XVI. On the specific heats of gases at constant volume.—Part II. Carbon dioxide

1894 ◽  
Vol 185 ◽  
pp. 943-959 ◽  
Keyword(s):  
Carbon Dioxide ◽  
Specific Heat ◽  
Constant Volume ◽  
Specific Heats ◽  
Extended Range ◽  
Absolute Density ◽  
Lower Temperature ◽  
The One ◽  
Range Observation ◽  
Linear Nature

The present paper is occupied with an experimental investigation into the variation of the specific heat at constant volume of carbon dioxide attending change of absolute density. The investigation is in continuation of a previous one, in which Carbon Dioxide, Air, and Hydrogen were the subjects of a similar enquiry over low ranges of density. It appeared to me desirable to extend the observations more especially in the case of carbon dioxide, because of the extended knowledge we already possess of its isothermals, and the fact that its critical temperature is within convenient reach. Other physical properties of the gas have also received much attention of recent years. It is also readily procured in a nearly pure state. The observations recorded in this paper extend, in the one direction, to densities, such that liquid is present at the lower temperature; and in the other, to a junction with the highest densities of the former paper. A plotting of the new observations is in satisfactory agreement with the record of the old. It reveals, however, the fact that the linear nature of the variation of the specific heat with density, deduced from the former results, is not truly applicable over the new, much more extended range observation. For convenience the chart at the end of this paper embraces the former results, and the present paper is extended to include the entire results on the variation of specific heat with density where the range of temperature, obtaining at each experiment, is approximately the same: that from air temperature to 100° C.

The Use of Renewable Energy in the Form of Methane Via Electrolytic Hydrogen Generation / Zastosowanie Odnawialnej Energii W Formie Metanu Na Drodze Elektrolitycznej Produkcji Wodoru

2013 ◽  
Vol 58 (1) ◽  
pp. 231-239 ◽  
Author(s):  
K. Hashimoto ◽  
N. Kumagai ◽  
K. Izumiya ◽  
H. Takano ◽  
P.R. Zabinski ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Renewable Energy ◽  
Energy Consumption ◽  
Hydrogen Generation ◽  
Industrial Applications ◽  
World Energy ◽  
Electrolytic Hydrogen ◽  
World Energy Consumption ◽  
Global Carbon ◽  
Seawater Electrolysis

Extrapolation of world energy consumption from 1990 to 2010 indicates the complete exhaustion of world reserves of oil, natural gas, uranium and coal by 2040, 2043, 2046 and 2053, respectively. For the survival of all people in the whole world, intermittent and fluctuating electricity generated from renewable energy should be supplied in the form of usable fuel to all people in the whole world. We have been working on research and development of global carbon dioxide recycling for the use of renewable energy in the form of methane via electrolytic hydrogen generation using carbon dioxide as the feedstock. We created energy-saving cathodes for hydrogen production, anodes for oxygen evolution without chlorine formation in seawater electrolysis, and catalysts for methanation of carbon dioxide and built pilot plants of industrial scale. Recent advances in materials are described. Industrial applications are in progress.

XIV.—Utilisation of Solid Caustic Soda in the Absorption of Carbon Dioxide

1922 ◽  
Vol 41 ◽  
pp. 128-135
Author(s):  
Elizabeth Gilchrist
Keyword(s):  
Carbon Dioxide ◽  
Caustic Soda ◽  
Water Vapour ◽  
Industrial Research ◽  
Mine Rescue

In the course of research on Mine Rescue Apparatus under the Department of Scientific and Industrial Research it was found necessary to investigate the conditions of utilisation of solid caustic soda for absorbing carbon dioxide, and particularly the effects of variations of temperature and water vapour upon the reaction.

scholarly journals The specific heats of air, steam, and carbon dioxide

1923 ◽  
Vol 103 (720) ◽  
pp. 183-184 ◽  
Keyword(s):  
Carbon Dioxide ◽  
Title I ◽  
Low Temperatures ◽  
Close Agreement ◽  
The Other ◽  
British Association ◽  
Specific Heats

In a recent number is a criticism under the above title by Sir R. T. Glazebrook, of some figures given by me in a paper with the same title. I am accused of not giving Holborn and Henning's own figures, because I State that part of my curve is filled in from the researches of Swann, and of Holborn and Henning. As Swann and Holborn and Henning are not in agreement, it seems evident that one set figures cannot be used without some adjustment to the other set. These discrepancies were dealt with by the British Association Committee (of which Sir R. T. Glazebrook later became a member) in their 1908 Report, and the figures I give are in fairly close agreement with theirs for the low temperatures. I State in my paper (p. 492) that I find Holborn and Henning about 7½ percent. too low at 800°C. for air and steam, and I assume that the same error applies to the carbon dioxide. (Prof. Callendar suggests their error may be as much as 10 per cent. at 1400°C.) I have, therefore, distributed this error over the range for which I have used Holborn and Henning's figures. On this account it may be anticipated "that the figures at the higher temperatures are higher than the corresponding figures due to Holborn." I believe it is usual, when quoting the results of other workers, to attach their names to the figures quoted; this I have not done.

scholarly journals The determination of the specific heat of gases at high temperatures by the sound velocity method II—Carbon dioxide

1936 ◽  
Vol 156 (889) ◽  
pp. 504-517 ◽  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
Specific Heat ◽  
Sound Velocity ◽  
Quartz Crystal ◽  
Wave System ◽  
Sound Waves ◽  
Heated Tube ◽  
Specific Heats

In a previous paper an account was given of experiments to determine the specific heats of carbon monoxide up to a temperature of 1800° C. by the sound velocity method. The principle of the method employed was the setting up in a heated tube of a stationary train of sound waves; the source of the wave system being a quartz crystal vibrating piezo-electrically at a known frequency.

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