The influence of the medium on the mechanical properties of catalysts

Shchukin, Eugenii D; Margolis, L. Ya.; Kontorovich, S. I.; Polukarova, Z. M.

doi:10.1070/rc1996v065n09abeh000231

Cited by 13 publications

(11 citation statements)

References 13 publications

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“…(this parameter is admitted to be much less than the specimen size). [54,58] The results are presented in Fig. The same correlation has been observed for the adsorption of water vapor on silica gel.…”

Section: Effects Of Medium and Adsorption On The Mechanical Behavior supporting

confidence: 68%

“…[53,54] It was established that the coverage of the surface by 1-4 adsorbate monolayers induced an appreciable decrease in the strength of the magnesium hydroxide samples (Fig. [53,54] It was established that the coverage of the surface by 1-4 adsorbate monolayers induced an appreciable decrease in the strength of the magnesium hydroxide samples (Fig.…”

Section: Effects Of Medium and Adsorption On The Mechanical Behavior mentioning

confidence: 99%

“…[54,56] The effect of the decrease in mechanical strength was greater the closer were the polarities of the adsorbent and the medium (water on silica gel, benzene on charcoal). (this parameter is admitted to be much less than the specimen size).…”

Section: Effects Of Medium and Adsorption On The Mechanical Behavior mentioning

confidence: 99%

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Surface Modification and Contact Interaction of Particles

Shchukin

Амелина

2003

Journal of Dispersion Science and Technology

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The effects of particle surface modification by ambient media and surfactant adsorption on the cohesive forces in the immediate contacts between individual particles have been studied with the CF (cohesive force) apparatus. The values of the free energy of interaction in direct coagulation contacts between particles of various types in liquids of different polarity and in the presence of various surfactants have been measured. They cover a broad range of several orders of magnitude; these interactions define the rheological properties of concentrated thixotropic systems and their stability with respect to peptization. A similar experimental technique has been used for studying active media influences on various physico-chemical processes of particle bridging and formation of the phase contacts responsible for the mechanical properties of related solid structures and their resistance to fracture. The effect of the adsorption induced decrease in strength and durability of such porous structures with phase contacts and compact solids is considered.

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Section: Effects Of Medium and Adsorption On The Mechanical Behavior supporting

confidence: 68%

Section: Effects Of Medium and Adsorption On The Mechanical Behavior mentioning

confidence: 99%

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Surface Modification and Contact Interaction of Particles

Shchukin

Амелина

2003

Journal of Dispersion Science and Technology

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“…5 and 6 illustrate that oscillatory adhesion forces [39,43] and phenomenon of adsorption compression [13][14][15][16][17] have the same thermodynamic origin. Note that adsorption compression results in significant internal forces when various fluid molecules are adsorbed in pores of solids [32][33][34][35][36][37][38]. These forces have the same nature as oscillatory adhesion forces; the difference is that there is a distribution of pore sizes and oscillations are averaged.…”

Section: Adsorption Compression As Common Thermodynamic Origin Of Oscmentioning

confidence: 99%

“…(20a), this pressure can reach thousands of atmospheres. These internal forces were noticed in experiments with ceramic nanoparticles [32,33]. Systematic experimental studies of such forces were performed by high-precision measurements of expansion of various nanoporous solids loaded with fluid adsorbates [34][35][36][37][38].…”

Section: Estimates and Evidence For Pressure Inversion In Nanoporesmentioning

confidence: 99%