The adsorption of chloromethanes on KCl. The role of the surface ions as adsorption sites.
スポンサーリンク
概要
- 論文の詳細を見る
The adsorbed amounts of chloro-substituted methanes, such as CH<SUB>2</SUB>Cl<SUB>2</SUB>, CHCl<SUB>3</SUB>, and CCl<SUB>4</SUB>, for KCl particles were measured by a volumetric method at various temperatures, and the isosteric heats of adsorption and differential entropies of the adsorbed molecules were estimated from the adsorption isotherms. The order of magnitude of the heats of adsorption at a coverage of θ=0.5 was found to be CH<SUB>2</SUB>Cl<SUB>2</SUB>>CHCl<SUB>3</SUB>>CCl<SUB>4</SUB>. Moreover, a plot of the dipole moments of the three adsorbates <I>vs.</I> the adsorption heat values gave a straight line. Therefore, the differences among the adsorption heats of the three adsorbates is mainly caused by an orientation of their dissimilar dipoles to the surface. It may be concluded that the chloro-substituted methanes are adsorbed on surface anions of KCl powder.
- 公益社団法人 日本化学会の論文
著者
-
Chikazawa Masatoshi
Department Of Applied Chemistry Graduate School Of Engineering Tokyo Metropolitan University
-
Kanazawa Takafumi
Department of Industrial Chemistry, Faculty of Technology, Tokyo Metropolitan University
-
Amada Masatoshi
Department of Industrial Chemistry, Faculty of Technology, Tokyo Metropolitan University
関連論文
- Surface active sites introduced onto calcium carbonate powder by a new surface preparation process
- The change in wettability and structure of silica powder surfaces modified with hexamethyldisilazane
- A conformation study of normal alkoxy groups introduced on to a silica surface
- The change in the water vapor affinity of fine silica particles loaded with trimethylsilyl groups
- Water vapor affinity of potassium bromide coated with potassium oleate.
- Simultaneous measurement of electrical conductivity and the amount of adsorbed oxygen in porous ZnO.
- The formation of trapped electrons upon the thermal dehydration-condensation of hydrated hydrogenorthophosphates.
- The "overcondensation" of phosphate ions and the formation of conjugate metal oxide upon the thermal dehydration-condensation of hydrogenorthophosphates.
- The Mechanism of Thermal Reactions in Apatites–Silica–Water Vapor Systems
- Effect of hydroxylation on the thermal reactivities of fluorapatite and chlorapatite.
- The adsorption of chloromethanes on KCl. The role of the surface ions as adsorption sites.
- A Solubility Study of Coacervates of Magnesium, Calcium and Aluminum Highpolyphosphates in Acid Solutions
- The synthesis of Mg3(PO4)2 8H2O and its new polymorphism.
- Thermal change of magnesium highpolyphosphate coacervates.