adsorption site

All of the adsorption sites are equivalent and each site can only accommodate one molecule.

Consider two species A and B that compete for the same adsorption sites.

This shows that the adsorption site is symmetrical with respect to this azimuth.

The latter term accounts for the overcounting arising due to the indistinguishable nature of the adsorption sites.

In this model, the adatoms reside on adsorption sites on the surface lattice.

The clay in the planting soil provides adsorption sites for hydrocarbons, heavy metals, nutrients and other pollutants.

The process can generally be thought of in terms of particles jumping between adjacent adsorption sites on a surface, as in figure 1.

The adatoms have no "choice" but to move to the right at first, and adjacent adatoms may block adsorption sites from one another.

At this stage a detailed determination of surface structures, including adsorption sites, bond angles and bond lengths was not possible.

The only considered molecular interaction is the following one: a molecule can act as a single adsorption site for a molecule of the upper layer.

Distribution of adsorption energies and odd adsorption sites.

In the most basic model only nearest-neighbor jumps are considered and "a" corresponds to the spacing between nearest-neighbor adsorption sites.

This means nitrogen is able to diffuse through the adsorbent, filling adsorption sites, whilst methane is not.

These studies allow us to determine the active adsorption sites, the reactivity of different crystal faces, and the relationship between surface reconstruction and adsorption.

Then the molecules meet adsorption sites that molecules can adsorb to chemically, so the molecules behave as follows.

Langmuir suggested that adsorption takes place through this mechanism: , where A is a gas molecule and S is an adsorption site.

In contrast to pure spillover, portal site adsorption refers to surface diffusion to adjacent adsorption sites, not to non-adsorptive support surfaces.

The Langmuir adsorption equation is used to model monolayer adsorption where all surface adsorption sites have the same affinity for the adsorbing species.

Portal site mediated adsorption is a model for site-selective activated gas adsorption in metallic catalytic systems that contain a variety of different adsorption sites.

Crystalline solid adsorption is dependent on the exposed crystal faces, grain orientations, and inherent defects because these factors provide adsorption sites with different steric configurations.

For the bulk of carbonaceous adsorbents regeneration efficiency decreases over subsequent cycles as a result of pore blockages and damage to adsorption sites by the applied current.

However, when differential heats of adsorption are combined with other techniques, such as IR spectroscopy, the nature and distribution of acid-base adsorption sites can be obtained.

The direct and inverse rate constants are k and k. If we define surface coverage, , as the fraction of the adsorption sites occupied, in the equilibrium we have:

From Langmuir's adsorption isotherm, molecules cannot adsorb on surfaces when the adsorption sites are already occupied by other molecules, so the sticking probability can be expressed as follows:

Surface diffusion kinetics can be thought of in terms of adatoms residing at adsorption sites on a 2D lattice, moving between adjacent (nearest-neighbor) adsorption sites by a jumping process.