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Topic: Adsorbate

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	Calgon Carbon Corporation: Adsorbate Profile Document Instructions
		The Adsorbate Profile Document (4 page document) must be completed and returned to Calgon Carbon Corporation, along with the Carbon Acceptance Canister or Sample Bottle containing the spent carbon, in order for the carbon acceptance process to begin.
		This section is your certification that the information you have included on the Adsorbate Profile Document is complete, accurate, and true.
		When your Adsorbate Profile Document is received at Calgon Carbon Corporation, a responsible party will sign and date the "Confidentiality Agreement" and return a copy of the entire document for your files.
	www.calgoncarbon.com /serviceplatform/APD_Instructions.htm (1347 words)

	Wastewater treatment with desorbing of an adsorbate from an adsorbent with a solvent in the near critical state - ...
		An adsorbate is removed from an adsorbent by contacting the adsorbent with a near critical liquid which is a solvent for the adsorbate.
		If the adsorbate is a weak acid, a base may be used to react with it to remove it; and, if the adsorbate is a weak base, an acid may be used as a reactant.
		This may be done by reacting the adsorbate with a suitable reactant while it is dissolved in or mixed with the near critical liquid remaining in the solvent recovery vessel 15 at the end of a solvent recovery cycle.
	www.freepatentsonline.com /4147624.html (5847 words)

	6.4 Examples - Surface Structures (Site not responding. Last check: 2007-10-14)
		The driving force for the formation of such structures may be an attractive dipole-dipole force between the two different adsorbed species (this might occur if, for example, one acts as an electron donor whereas the other acts as an electron acceptor on the substrate concerned).
		The structures of ordered adsorbate overlayers may be defined by specifying the adsorbate unit cell in terms of the ideal substrate unit cell - in many cases, such as the examples given, this can be done using the simple Wood's notation and this is the common practice.
		the overlayers were simple structures in which the adsorbate unit cell dimensions corresponded to one of the atom-atom spacings in the underlying substrate structure ; this is generally the case for adsorbed overlayers of gaseous molecules.
	www.chem.qmw.ac.uk /surfaces/scc/scat6_4.htm (662 words)

	[No title] (Site not responding. Last check: 2007-10-14)
		Physisorption/Physisorbed is an abbreviation for physical adsorption and refers to weak, van der Waals interactions (dispersion, or a dipolar interactions) between a substrate and adsorbate in which the energy of interaction is on the order of the enthalpy of condensation of the adsorb ate onto the substrate which is approximately 20 kJ/mol (kilojoules per mole).
		The method according to claim 6 wherein the adsorbate /substrate system includes a bond within the adsorbate and the bond cleaved in step (b) is the bond within the adsorbate.
		A method for desorbing an adsorbate bonded to a substrate wherein the adsorbate/substrate system includes multiple energy levels, the method comprising the step of bombarding the adsorbate/substrate system with a particle beam having an energy approximately resonant with a transition between two energy levels thereby cleaving a bond in the adsorbate/substrate system.
	www.wipo.int /cgi-pct/guest/getbykey5?KEY=98/53296.981126&ELEMENT_SET=DECL (6015 words)

	Patent 6,027,746
		The adsorbate suspension technology of the present invention that is incorporated within the gelatin capsule is comprised of a pharmaceutical active adsorbed onto a magnesium trisilicate microgranule or agglomerate.
		Preferably, the adsorbate used in the practice of the present invention is comprised of a mixture of both magnesium trisilicate and silicon dioxide in a 1:1 ratio.
		In order to prepare the adsorbate suspensions incorporated in the gelatin capsule of the present invention, generally a wet granulation methodology is employed as is known in the art.
	www.pharmcast.com /Patents/022200OG/6027746_softgel022200.htm (1908 words)

	Effects of Excluded Surface Area and Adsorbate Clustering on Surface Adsorption of Proteins. II. Kinetic Models -- ... (Site not responding. Last check: 2007-10-14)
		of magnitude of the characteristic length of the adsorbate molecule.
		Adsorbate cluster growth is assumed to proceed primarily by the reversible addition of single molecules of the adsorbing species,
		Minton, A. Effects of excluded surface area and adsorbate clustering on surface adsorption of proteins.
	www.biophysj.org /cgi/content/full/80/4/1641 (3692 words)

	[No title] (Site not responding. Last check: 2007-10-14)
		By introducing a competing adsorbate to the aeration process, the adsorbed sterilant on the surface of the article is at least partially displaced.
		the maximum quantity of adsorbates on the quantity of material based on the adsorbent's"surface area,"which, in the context of adsorption, relates to all exposed solid surfaces, typically of micron and angstrom dimensions, which, although not visible to the naked eye, are usually in the form of pores and crevices in, the material;
		This shifts the adsorption equilibrium, as expressed in Equation (1), such that adsorption of the co- adsorbate is favored.
	www.wipo.int /cgi-pct/guest/getbykey5?KEY=99/33494.990708&ELEMENT_SET=DECL (4080 words)

	Adsorbate-induced nonresonant reflectivity changes on a metal surface: The origin and application to surface kinetics ...
		The adsorbate induced reflectivity changes were correlated with the coverage and overlayer ordering for carbon monoxide, acetylene, and oxygen on Cu(100).
		The observed frequency dependence and the linear correlation of the reflectivity changes with coverage for carbon monoxide and acetylene are consistent with a surface electron scattering model.
		The lack of dependence of the reflectivity changes on adsorbate ordering suggest that the electron scattering is primarily inelastic involving vibrational excitation of the overlayer.
	repository.upenn.edu /dissertations/AAI9913451 (416 words)

	Ultrafast Investigations of Desorption at Nanoparticle Surfaces
		Our plan is to explore the particle size-dependence of the importance of these mechanisms for photoinduced desorption dynamics of adsorbates from supported nanoparticle surfaces.
		Two-pulse correlation data can be modeled using the well-known two temperature model in conjunction with an empirical frictional coupling model, wherein three heat baths, that of the electrons, that of the phonons, and that of the adsorbate are coupled, allowing time constants and the energy of activation for the reaction to be extracted.
		It has been suggested that the difference in CO desorption mechanisms on different metals is due to the difference in the position of the adsorbate affinity level (CO 2 p*) relative to the Fermi level.
	www.chemistry.bnl.gov /SciandTech/SCD/ultrafast_investigations_of_deso.htm (674 words)

	Definition of adsorbate - Merriam-Webster Online Dictionary
		Learn more about "adsorbate" and related topics at Britannica.com
		Find more about "adsorbate" instantly with Live Search
		See a map of "adsorbate" in the Visual Thesaurus
	www.m-w.com /cgi-bin/dictionary?book=Dictionary&va=adsorbate (26 words)

	Theory of friction: dynamical phase transitions in adsorbate layers. (Site not responding. Last check: 2007-10-14)
		When an external force acts on an adsorbate structure, the structure may slide or flow relative to the substrate.
		The mechanism behind this sliding motion is of fundamental importance for the understanding of friction and lubrication between two flat macroscopic surfaces, and is also related to the question of what boundary condition should be used for the velocity field at a solid-liquid interface when solving the Navier-Stokes equations of fluid dynamics.
		I present results of simulations based on Langevin or Brownian-motion dynamics, which illustrate the dependence of the non-linear (in the external driving force F) sliding friction \bar \eta on the coverage \theta, and on the microscopic friction \eta.
	flux.aps.org /meetings/BAPSMAR95/abs/SG3011.html (213 words)

	Chapter 1: Introduction (Site not responding. Last check: 2007-10-14)
		The coordination and spacing between adsorbate (X) and Si atoms in the rt unit-cell is the surface structure.
		Coverage, the amount of adsorbate atoms per substrate first-layer atoms, is usually referred to in terms of monolayers (ml).
		Trimerization is the symmetric distortion of three adsorbate surface-bonds which brings the triad closer together; trimerized-atom models are also called ``milk-stool'' models, because of the obvious resultant structure.
	www.matscieng.sunysb.edu /introt1.html (3031 words)

	Gas Adsorption
		This is because the adsorbates can interact with each other when they lie upon the surface (in general they would be expected to repel each other).
		At any temperature, the adsorbate and the surface come to a dynamic equilibrium, that is, the chemical potentials of the free adsorbate and the surface bound adsorbate are equal.
		The constant c represents the relative strengths of adsorption to the surface and condensation of the pure adsorbate.
	itl.chem.ufl.edu /4411L_f00/ads/ads_1.html (3049 words)

	WAVAR on the Web Page Three
		Adsorption is a process used to concentrate a substance (the adsorbate) out of a fluid as it is passed through a fixed-bed (the adsorbent).
		This means that the rate of loading of the adsorbent bed is the same as the adsorbate mass flow.
		The choice of adsorbent is dependent on the adsorbate needed, but in all cases should offer regeneration resiliency and low pressure drop across the bed.
	www.aa.washington.edu /research/ISRU/JBIS/wavrweb3.html (549 words)

	ERPT - 012Q Nelson (Site not responding. Last check: 2007-10-14)
		the activity of the adsorbate is directly proportional to its concentration (and a similar statemt for the solvent)
		The total moles of adsorbate present in the system is the sum of the amount in solution and the amount adsorbed on the solid.
		A calculation of the moles of adsorbate adsorbed on the powder requires that we first determine the specific surface area (area per unit mass) of the powder.
	www.erpt.org /012Q/NelsW-07.htm (1839 words)

	[No title]
		Adsorbate adsorbs from the liquid phase onto the outer surface of the carbon particle.
		It is during this process that it is assumed to immediately equilibrate with the solid phase concentration, thus leading to one of the boundary conditions.
		Adsorbate diffuses along the inner surface of the carbon particles until it reaches its adsorption site. Surface diffusion more important Pore diffusion Surface diffusion is the rate limiting step Governing Equations Solid phase mass balance The solid phase mass balance is less dependent on the physical system than a liquid phase mass balance.
	www.acsu.buffalo.edu /~pcg/cie546/report.doc (2694 words)

	Infrared external-reflection spectroscopy of adsorbates on dielectric substrates: determining adsorbate orientation in ... (Site not responding. Last check: 2007-10-14)
		The theory of IR external reflection spectroscopy is applied to the study of adsorbates on dielec.
		To overcome this difficulty for Langmuir monolayers, a microscopic model is proposed which relates the optical parameters of the adsorbate monolayer to select mol.
		The behavior of the reflection spectrum is shown as a function of adsorbate orientation by using simulated spectra.
	mrsec.uchicago.edu /Publications/Rice/rice002.html (280 words)

	2.5 Adsorbate Geometries & Structures on Metals (Site not responding. Last check: 2007-10-14)
		This behaviour is typical of atomic adsorbates which almost invariably endeavour to maximise their co-ordination and hence prefer to occupy the highest-available co-ordination site on the surface.
		The strength of the interaction between adsorbate and substrate is such that the adjacent metal atoms are often seen to undergo significant displacements from the equilibrium positions that they occupy on the clean metal surface.
		This displacement may simply lead to a distortion of the substrate surface in the immediate vicinity of the adsorbed atom (so that, for example, the adjacent metal atoms are drawn in towards the oxygen and the metal-oxygen bond distance is reduced) or to a more extended surface reconstruction (see Section 1.6)
	www.chem.qmw.ac.uk /surfaces/scc/scat2_5.htm (1761 words)

	Biophysical Journal: Effects of excluded surface area and adsorbate clustering on surface adsorption of proteins. II. ...
		86:239-247) in which negative cooperativity due to area exclusion by adsorbate molecules is compensated to a variable extent by the formation of a heterogeneous population of monolayer surface clusters of adsorbed protein molecules.
		The second pathway consists of direct deposition of a monomer in solution onto the upper (solution-facing) surface of a preexisting cluster ("piggyback" deposition) and subsequent incorporation into the cluster.
		Results of calculations of the time course of adsorption, carried out for two different limiting models of cluster structure and energetics, show that in the absence of piggyback deposition, enhancement of the tendency of adsorbate to cluster can reduce, but not eliminate, the negative kinetic cooperativity due to surface area exclusion by adsorbate.
	www.findarticles.com /p/articles/mi_qa3938/is_200104/ai_n8952780 (1068 words)

	Solid Liquid Adsorption for Wastewater Treatment: Principle Design and Operation - K. Vasanth Kumar, K. Subanandam, S. ...
		The adsorbate may be organic compound, color, odor, moisture etc. Keller (1995) lists the four most common adsorption processes in terms of their estimated annual sales, along with their characteristics, applications and disadvantages (Table 2).
		In fixed bed the adsorbate is continuously in contact with a given quantity of fresh adsorbent thus providing the required concentration gradient between adsorbent and adsorbate for adsorption.
		The breakthrough point is the maximum allowable concentration of adsorbate in the gas exiting the adsorber and is determined from the breakthrough curves.
	www.eco-web.com /editorial/040201.html (5053 words)

	LEED Studies of Atomic Structures of Si{111}rt3rt3-30-metal Surface Phases (Site not responding. Last check: 2007-10-14)*
		Figure 3.8: The minimum Keating energies for the H_3-, T_4-, and B_5-model structures of the Si{111}rt3rt3-30-X surfaces as a function of the adsorbate's* covalent radius.
		Additionally, the adsorbate atoms relax toward the center of symmetry, thus forming adsorbate trimers.
		The adsorbate atoms relax away from the center symmetry, which causes the appearance of adsorbate trimers that are chained together.
	www.matscieng.sunysb.edu /prelt1.html (2128 words)

	APT - Adsorption Prediction Technique for Activated Carbon Saturation
		The program is able to project the preferential order of adsorption among adsorbate(s), even if the given mixture has never been studied experimentally.
		The prediction is dependent on the accuracy of reported analyses of all contaminants to be removed and any additional competitive adsorbate(s) substances.
		To determine if your adsorbate(s) is in TIGG’s data bases, please contact your TIGG sales representative.
	www.tigg.com /APT.html (193 words)

	Control of Carboxylic Acid and Ester Groups on Chromium (VI) Binding to Functionalized Silica/Water Interfaces Studied ... (Site not responding. Last check: 2007-10-14)
		In the above expression, the phase shift between the SHG E-field from the adsorbate and the one originating from the underlying substrate is assumed to be 0 or 180 degrees.
		The net SHG E-field originating from the adsorbate is thus obtained by taking the difference between the square root of the SHG signal intensity obtained from the interface with the adsorbate present and the square root of the SHG signal intensity obtained from the plain interface (no adsorbate present).
		It is important to note, however, that for a ninety-degree phase shift one should take the difference between the SHG signal intensity obtained from the interface with the adsorbate present and the one obtained from the plain interface (no adsorbate present), followed by taking the square root of that difference.
	pubs.acs.org /cgi-bin/jcen?jpcbfk/asap/html/jp050782o.html (8956 words)

	Amazon.com: "target adsorbate": Key Phrase page (Site not responding. Last check: 2007-10-14)
		tem- perature, flowrate, concentration of the target adsorbate(s), type of adsor- bate(s), number of adsorbates, and level of adsorbate(s) removal required.
		Fundamental Factors for Designing Adsorbents Selection or synthesis of adsorbents for a given target adsorbate molecule is based on the adsorption isotherm.
		The second important aspect of PAC selection is the capacity of the carbon for the target adsorbate and the adsorption isotherm.
	www.amazon.com /phrase/target-adsorbate (322 words)

	SURFACE SCIENCE AND ADSORBATE PHOTOCHEMISTRY
		Surface Science and Adsorbate Photochemistry (organization of molecular monolayers, self-assembly, photochemistry and dynamics in the adsorbed state, photon- and electron-stimulated desorption).
		A high resolution electron energy loss spectrometer (HREELS) is used to determine the adsorbate vibrational spectrum and a scanning tunneling microscope (STM) is used to image these systems with atomic resolution.
		The Elucidation of Adsorbate Structure and Dynamics from Photofragment Angular Distributions, S. Garrett, Proc.
	www.cem.msu.edu /~gradoff/brochf/Garrett.htm (512 words)

	About MSEL
		Surface stresses arise because the atomic configuration of atoms at a surface is different than that in the bulk, the interior atoms exerting a stress on the surface atoms, i.e., the surface stress, that moves them out of the positions they would occupy in a bulk crystal configuration.
		The adsorption of species onto the surface can be expected to alter the surface stress since the local interaction of each adsorbate will alter the bond strength between neighboring atoms on the surface.
		MSEL researchers have established a Class II (1 mW) HeNe optical bench dedicated to the in situ measurement of surface stress during electrochemical processing using the wafer curvature method.
	www.msel.nist.gov /Highlights/June05_Highlights.htm (1060 words)

	the Nanoscale Physics Research Laboratory
		Adsorbate resonant states: resonance energy shifts due to elastic multiple electron scattering
		Surface dielectric response of a semi-metal: electron energy loss spectroscopy of graphite
		Determination of adsorbate molecular orientation from resonance electron scattering angular distributions
	www.nprl.bham.ac.uk /publications (5024 words)

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