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Solids holdup and pressure drop in gas-flowing solids-fixed bed contactors
(Amer Chemical Soc, Washington, 2003)
Fundamentally based model for pressure drop in gas-flowing solids-fixed bed contactors is presented, together with a phenomenological semiempirical model for prediction of dynamic holdup. These simple models do not require ...
Somebody get me a drill!
(Elsevier, 2003)
Improvement to the Flynn-Wall method of determining apparent activation energies of the thermal degradation of polymers
(Amer Chemical Soc, Washington, 2003)
An improvement to the Flynn-Wall method of determining apparent activation energies of the thermal degradation of polymers is presented. The method involves the deconvolution of differential thermogravimetric (TG) curves ...
Use of nonlinear frequency response for discriminating adsorption kinetics mechanisms resulting with bimodal characteristic functions
(Springer, New York, 2003)
One of the characteristic examples of the inability of the classical linear frequency response (FR) method to identify the correct kinetic mechanism is adsorption of some substances (p-xylene, 2-butane, propane or n-hexane) ...
Osmotic coefficient of the ZnCl2(aq) at T=298.15 K
(Academic Press Ltd- Elsevier Science Ltd, London, 2003)
The osmotic coefficient of ZnCl2(aq) has been measured at T = 298.15 K by the isopiestic method over the range of molalities from (0.4 to 2.4) mol . kg(-1) with KCl(aq) as the reference solution. The available literature ...
Cooler for obtaining crystals in a crucible furnace
(Int Union Crystallography, Chester, 2003)
Solid-state NMR study of an open-framework aluminophosphate-oxalate hybrid
(Amer Chemical Soc, Washington, 2003)
Short-range order within a novel aluminophosphate-oxalate hybrid material with the unit cell formula CH2(NH3)CH(NH3)CH3Al4P6O20(OH)(4)(C2O4)H2O was studied by multinuclear solid-state NMR measurements. The C-13, Al-27, and ...
Influence of synthesis parameters on the structure of boehmite sol particles
(Elsevier, Amsterdam, 2003)
Influence of the type and amount of acid, used for aluminium hydroxide peptization, on the crystallinity and specific surface area of the dispersed phase of boehmite sols as well as the pH of sols, was investigated. The ...
Methanolysis of used frying oil
(Elsevier, 2003)
The result of the investigation on methyl esters obtained on the basis of heated refined sunflower oil and used frying oils are given in the paper. Transesterification reaction conditions that affect yield and purity of ...
Ionization energies of hypervalent Li2F, Li2Cl and Na2Cl molecules obtained by surface ionization electron impact neutralization mass spectrometry
(John Wiley & Sons Ltd, W Sussex, 2003)
Ionization energies of hypervalent Li2F, Li2Cl and Na2Cl molecules detected by surface ionization electron impact neutralization mass spectrometry are reported. The ionization energies were 3.78 +/- 0.2 eV for Li2F, 4.93 ...