Emmet

Usually the plaques produced by either method are coined (compressed) in those areas where subsequent welded tabs are coimected or where no active material is desired, eg, at the edges. The uncoined areas usually have a Bmnauer-Emmet-TeUer (BET) area in the range of 0.25—0.5 m /g and a pore volume >80%. The pores of the sintered plaque must be of suitable size and intercoimected. The mean pore diameter for good electrochemical efficiency is 6—12 p.m, deterrnined by the mercury-intmsion method. 

Robert G. Emmet, Peter Harriott, Tim Laros, Wallace Leung, Shelby A. Miller,... 

P. H. Emmet, Catalysis, Reinhold Publishing Corporation, New York seit 1954. 

R. Emmet McLaughlin, Casper Schwenckfeld Reluctant Radical. His life to 1540 (New Haven and London Yale University Press, 1986). The texts are available in the standard edition of Chester David Hartranft and Elmer Ellsworth Schultz Johnson (eds.). Corpus Schmenckfeldianorum, 19 vols. (Leipzig Breitkopf and Hartel, 1907- Pennsburg -6). See also Andre Sciegienny (Seguenny), Homme charnel, homme spirituel (Wiesbaden, 1975). 

R. Emmet McLaughlin, The Freedom of Spirit, Soeial Privilege and Religious Dissent (Baden-Baden, 1966), 255-71. 

Azo-bis-isobutyronitrile average polymer chain concentration 4-aminotoluene (p-toluidine) Brunauer-Emmet-Teller cross-linking degree Cross Polarization-Magic Angle Spinning Nuclear Magnetic Spectroscopy Cyclic voltammetry N, A-dimethylformamide... 

Emmet RT (1968) Naval Ship Research and Development Centre, Report 2570... 

Emmet [301] developed a colorimetric method involving chlorination of the urea with hypochlorite, followed by condensation with phenol. The limit of detection for this method was 0.2 p,g/l as nitrogen. The method was easily adaptable to automatic analysis. 

Emmet RT (1969) Spectrophotometric determination of urea in natural waters with hypochlorite and phenol. NAVSHIPRANDLAB Annapolis Report 2663... 

A number of models have been developed for the analysis of the adsorption data, including the most common Langmuir [49] and BET (Brunauer, Emmet, and Teller) [50] equations, and others such as t-plot [51], H-K (Horvath-Kawazoe) [52], and BJH (Barrett, Joyner, and Halenda) [53] methods. The BET model is often the method of choice, and is usually used for the measurement of total surface areas. In contrast, t-plots and the BJH method are best employed to calculate total micropore and mesopore volume, respectively [46], A combination of isothermal adsorption measurements can provide a fairly complete picture of the pore size distribution in sohd catalysts. Mary surface area analyzers and software based on this methodology are commercially available nowadays. 

The determination of the specific surface area of a zeolite is not trivial. Providers of zeolites typically give surface areas for their products, which were calculated from gas adsorption measurements applying the Brunauer-Emmet-Teller (BET) method. The BET method is based on a model assuming the successive formation of several layers of gas molecules on a given surface (multilayer adsorption). The specific surface area is then calculated from the amount of adsorbed molecules in the first layer. The space occupied by one adsorbed molecule is multiplied by the number of molecules, thus resulting in an area, which is assumed to be the best estimate for the surface area of the solid. The BET method provides a tool to calculate the number of molecules in the first layer. Unfortunately, it is based on a model assuming multilayer formation. Yet, the formation of multilayers is impossible in the narrow pores of zeolites. Specific surface areas of zeolites calculated by the BET method (often termed BET surface area) are therefore erroneous and should not be mistaken as the real surface areas of a material. Such numbers are more related to the pore volume of a zeolite rather than to their surface areas. 

It seems more than a fairy story that so metaphysical an entity should yut be producible in a moment by no means of wisdom, no formula of magic, but by a simple herb. The wisest man emmet add happiness to others, though ihey be dowered with youth, beauty, wealth, wit and love the lowest blackguard shivering in rags, destitute, diseased, old, craven, stupid, a mere morass of envy, may have it with one swift-sucked breath, The thing is as paradoxical as life, as mystical as death. 

S Brunauer PH. Emmet and E. Teller, J. Am. Chem. Soc. 60 (1938) S. Brunauer, The Adsorption of Gases and Vapours, Oxford Univ. Press, London, 1943. 

DIN 66 131 Bestimmung der spezifischen Oberflache von Feststoffen durch Gasadsorption nach Brunauer, Emmet and Teller (BET), see also ISO 9277-1992. 

The moisture and gas content of charcoals and the activation of charcoal for use in gas masks was the major project undertaken by the branch laboratory at Princeton University. George A. Hullet, a professor of physical chemistry at the University, directed a staff of 14 chemists who as soldiers were stationed there during the war. Fred Neher, an organic chemist, was assisted by three graduate students employed by the Bureau of Mines in the synthesis of several compounds suggested by E. Emmet Reid (27). ... 

Chloroacetophenone was among the many samples of possible war gases prepared by E. Emmet Reid and sent to the Bureau of Mines in 1917. Because there were no testing facilities for lachryma-tors until the central laboratory was completed, the value of this compound as a tear gas went unnoticed. It was January, 1918, before the results of the physiological tests were reported which showed chloroacetophenone to be superior to any other tear gas in use at the time (23). The Johns Hopkins University branch laboratory, in cooperation with a unit at American University then developed a method of synthesis. Although chloroacetophenone was not produced in quantity before the war ended, it became the standard tear gas used by civilian police after the war (38). 

Reid, E. Emmet. Armed Forces Chemical Journal 1955, 9 (July-August), 38. 

Reid, E. Emmet. "History of Offense Research, John Hopkins University Station", Historical Report No. H-149, Chemical Warfare Service, Edgewood Arsenal Technical Library. 

While for macroporous structures the inner surface can be calculated from the geometry, meso and micro PS layers require other methods of measurement First evidence that some PS structures do approach the microporous size regime was provided by gas absorption techniques (Brunauer-Emmet-Teller gas desorption method, BET). Nitrogen desorption isotherms showed the smallest pore diameters and the largest internal surface to be present in PS grown on low doped p-type substrates. Depending on formation conditions, pore diameters close to, or in, the microporous regime are reported, while the internal surface was found to... 

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