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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

A new method for the determination of adsorption isotherms

Bulman, Norman January 1947 (has links)
A new apparatus for the determination of adsorption isotherms is described. The chief feature of this apparatus is that the gas under investigation is allowed to leak slowly, at a known rate, into the adsorbent. The rate at which the pressure increases in the system is recorded. From this data the amount of gas adsorbed by the solid can be calculated and with the measured pressure can be plotted as an adsorption isotherm. The adsorption of carbon dioxide on charcoal has been studied by the use of this apparatus. The reported presence of discontinuities in this adsorption isotherm has not been confirmed. / Science, Faculty of / Chemistry, Department of / Graduate
12

Mössbauer and adsorption study of Fe⁵⁷ in Linde L zeolite

Lassau, Raymond Troy January 1972 (has links)
A single Fe³⁺ species has been introduced into Linde L zeolite and is identified as an iron oxyhydroxide from its Mössbauer relaxation properties. The effects of N₂, CO₂ and C₂H₆ on the ferric species and on the bulk behaviour of the sample are observed by Mössbauer Spectroscopy and adsorption studies under outgassing conditions. The ferric oxyhydroxide initially blocks the pores to gas adsorption but reducing it to Fe⁰ at 943⁰ K and reoxidizing it to α-Fe₂0₃ in air at 773⁰ K frees the pores. The bulk α-Fe₂0₃ is concluded to lie on the external zeolite surface. / Science, Faculty of / Chemistry, Department of / Graduate
13

Low coverage gas-surface interactions

Wolfe, Robert January 1967 (has links)
The investigation of gas-surface interactions has been approached from two different aspects. Firstly, the design and construction of an apparatus to measure low coverage isotherms for argon on evaporated metal films in the region of liquid nitrogen temperature is discussed. Secondly, a detailed analysis of available second and third order gas-solid interaction data has been carried out. It is found that the existing theories for interpreting and calculating three-body forces in physical adsorption systems are incapable of explaining the observed values. / Science, Faculty of / Chemistry, Department of / Graduate
14

Gas absorption with chemical reaction

Hwu, Chung-Kong. January 1954 (has links)
LD2668 .T4 1954 H9 / Master of Science
15

A study of gas absorption with chemical reaction in various types of columns

Lin, Min-Shuey January 1956 (has links)
No description available.
16

THE THERMAL ACCOMMODATION COEFFICIENT OF HELIUM AND ARGON ON AN AMORPHOUS SILICON-DIOXIDE SURFACE

McFall, Alan Leroy January 1978 (has links)
No description available.
17

Absorption of sulfur dioxide by charged aqueous droplets

Davis, Joel 05 1900 (has links)
No description available.
18

The collection of aerosol particles by charged water droplets

Lewis, Lonzy 12 1900 (has links)
No description available.
19

Adsorption on activated carbon of hydrogen, methane and carbon dioxide gases and their mixtures at 212 K to 301 K and up to thirty-five atmospheres.

Rogers, Kenneth Alfred 05 1900 (has links)
No description available.
20

The effects of humidity and gas phase concentration on the absorption of sulphur dioxide by charged aqueous droplets

Giardina, Philip Joseph 05 1900 (has links)
No description available.

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