The opposite is true taken in its proper content. You see...annamal said:TL;DR Summary: How come silver having a weak chemisorption of olefins means it is a good olefin/paraffin separator?
If silver weakly binds to olefins, wouldn't that make a lousy separator?
Weak chemisorption refers to a type of adsorption where the adsorbate molecules are bound to the surface of the adsorbent through relatively weak chemical bonds. These interactions are stronger than those in physisorption but weaker than those in strong chemisorption, often involving van der Waals forces or weak covalent bonds.
Weak chemisorption is intermediate between physisorption and strong chemisorption. Physisorption involves very weak interactions, primarily van der Waals forces, and occurs at low temperatures. Strong chemisorption involves the formation of strong chemical bonds, often covalent or ionic, and typically requires higher activation energy. Weak chemisorption involves interactions stronger than physisorption but not as strong as those in strong chemisorption.
Examples of weak chemisorption include the adsorption of hydrogen on certain metal surfaces, where the interaction is not strong enough to dissociate the hydrogen molecule into atoms. Another example is the adsorption of certain organic molecules on metal oxides, where the interaction involves weak covalent bonding or hydrogen bonding.
Factors influencing weak chemisorption include the nature of the adsorbate and adsorbent, the surface structure of the adsorbent, temperature, and pressure. The electronic properties and surface defects of the adsorbent can also play a significant role, as well as the presence of other adsorbed species that might compete for adsorption sites.
Weak chemisorption is important in catalysis because it allows reactants to adsorb onto the catalyst surface without becoming too strongly bound. This enables the reactants to be activated and transformed into products, which can then desorb from the surface easily, making the catalyst available for further reactions. This balance between adsorption strength and ease of desorption is crucial for the efficiency of many catalytic processes.