Role of wetting

Simons, S.J.R. and Fairbrother, R.J., 2000. Direct observation of liquid binder-particle interactions the role of wetting behaviour in agglomerate growth. Powder Technology, 110, 44-58. 

Characterize CH for high sedimentation volume, easy dispersibility, evaluate role of wetting agent affecting particle solubility, Ostwald ripening-trarrsformation of PH/CH dining storage. 

Evans, R. and Marini Bettolo Marconi, U. (1985). The role of wetting films in capillary condensation and rise influence of long-range forces. Chem. Phys. Lett., 114, 415-22. 

Indicate the mechanisms of biogeochemical cycling in the Savanna ecosystems of Africa. Empasise the role of wet and dry seasons in migration of various chemical species. 

The scope of the present paper is to emphasize the role of wetting and spreading in the aging by sintering, and in the redispersion of supported metal catalysts. In the next section, some experimental results regarding the behavior of iron supported on alumina are presented to demonstrate that surface phenomena do play a major role. This is followed by stability considerations which are employed to explain the coexistence of multilayer surface films with crystallites in an oxygen atmosphere and the rupture of thin films into crystallites in a hydrogen atmosphere. 

Diaz-Somoano M, Unterberger S, Hein KRG. Mercury emission control in coal-fired plants The role of wet scrubbers. Fuel Process Technol 2007, 88, 259-263. 

They generally suggest an increase of the Reynolds number exponent when using less wettable packings. This is well accounted for by Eq. 22 which predicts an exponent equal to 1-2/3 f i.e. increasing with Re. This role of wetting paramete ... 

In order to estimate the role of wetting on the apparent rate it is necessary to know the fraction of the total catalyst external surface wetted by the moving liquid. Onda et al. [59] have proposed ... 

Ruckenstein E, Chu YF Redispersion of platinum crystallites supported on alumina—role of wetting, / Catal 59(1) 109-122, 1979. 

The role of moisture in corrosion of metals and other surfaces is twofold surface wetness acts as a solvent for containments and for metals is a medium for electrolysis. The presence of sulfate and chloride ions acceler-... 

Dust particles also play an important role (Fig. 3.1). They act as nuclei for the initial corrosion attack and as some particles are hygroscopic their presence tends to increase the periods of wetness of the steel surface. 

Adsorption of water on salt crystals plays a key role in many atmospheric and environmental processes. Alkah halides in particular play an important role in the first stages of drop growth in clouds. To understand the atomistic details of the wetting and dissolution processes that take place in these crystals, we apphed SPFM to the smdy of the adsorption of water vapor on single crystal surfaces and the role of surface defects, such as steps. 

It is of interest to examine the development of the analytical toolbox for rubber deformulation over the last two decades and the role of emerging technologies (Table 2.9). Bayer technology (1981) for the qualitative and quantitative analysis of rubbers and elastomers consisted of a multitechnique approach comprising extraction (Soxhlet, DIN 53 553), wet chemistry (colour reactions, photometry), electrochemistry (polarography, conductometry), various forms of chromatography (PC, GC, off-line PyGC, TLC), spectroscopy (UV, IR, off-line PylR), and microscopy (OM, SEM, TEM, fluorescence) [10]. Reported applications concerned the identification of plasticisers, fatty acids, stabilisers, antioxidants, vulcanisation accelerators, free/total/bound sulfur, minerals and CB. Monsanto (1983) used direct-probe MS for in situ quantitative analysis of additives and rubber and made use of 31P NMR [69]. 

Both of the above chemical studies point towards the increased importance of the burning process at 285°C in determining the initial rate of heat production. The role of water as yet remains undefined other than at the higher temperature of 285°C it appears to have the opposite effect on the bitumen sample compared to the process at 225°C i.e., it appears that water vapor encourages pathways by which the various components of bitumen react with oxygen. Preliminary calculations of the total heats evolved during the wet oxidation of bitumen sands indicate that they are independent of the partial pressure of oxygen in the system at... 

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