ADSORPTION. Surface Activity of Solutes Solute, c  oo Solutes that decrease surface tension are called “surfactants”  Solute, c.

Slides:

Advertisements

Similar presentations

Lecture 20. Adsorption Phenomena

Advertisements

Adsorption Diagenesis

5-2. OZONE LAYER Formation of Ozone Layer  Ozone layer: A part of stratosphere (ca. 20km high) in which ozone concentration is relatively high.

Catalysis and Catalysts - Physical Adsorption Physical Adsorption  Texture and morphology –pore size –pore shape –pore-size distribution (same size or.

Lecture 3. Adsorption on the interphase of liquid-gas Prepared by PhD Falfushynska Halina.

ADSORPTION by Pranoy Pratik Raul.

Surface and Interface Chemistry  Solid/liquid Interface Valentim M. B. Nunes Engineering Unit of IPT 2014.

Heterogeneous catalysis

Conservative and Reactive Solutes Conservative do not react with soil / groundwater Chloride is a good example Sorbed onto mineral grains as well as organic.

CB Layers at Different Temperature 1 “Formation of Liquid Crystalline Phases from a Langmuir Monolayer” By K.A. Suresh and A. Bhattacharyya.

Lecture Thursday 4/3/08 Normal Pentene  Iso-Pentane Langmuir Adsorption Isotherm Catalytic Converters for Automobiles.

Surface and Interface Chemistry  Thermodynamics of Surfaces (LG and LL Interfaces) Valentim M. B. Nunes Engineering Unit of IPT 2014.

Particles as surfactants and antifoams N. D. Denkov and S. Tcholakova Department of Chemical Engineering, Faculty of Chemistry, Sofia University, Sofia,

ADSORPTION The removal of dissolved substances from solution using adsorbents such as activated carbon.

4.3 Exchange of gases in the lungs. Learning outcomes Students should understand the following: The essential features of the alveolar epithelium as a.

Chapter 9 Thermodynamics.

Langmuir Adsorption Isotherm

Reaction Rates. Chemical Equation Review Chemical Reactions Every reaction has a chemical equation. The reaction of nitrogen monoxide with ozone produces.

Adsorption. What is Adsorption? Adsorption is the transfer of a material from one liquid or gaseous state to a surface. The substance that is transferred.

Math – Volumes Using Cross-Sections 1. 2.

Chapter 15. Interfacial Phenomena

 Temperature When temperature increases, the particles move faster causing more collisions & the reaction rate increases  Simulation Simulation.

Determination of the Aqua Surface Tension by Determining the Biggest Vacuole Pressure 退出.

Surface Chemistry the study of physical and chemical phenomena that occur at the interface of two phases, including solid-liquid interfaces, solid-gas.

§8.4 Surface adsorption of solution. 1 The surface phenomena of solution: Is solution homogeneous? (1) surface adsorption AA A B A B Solvent A Solute.

“The Water Molecule” Why is Water So Special??.  Water is very unique… SPECIAL!  Water, H 2 O, is present in all three phases here on earth which is.

Surface and Interface Chemistry  Solid/gas Interface (part two) Valentim M. B. Nunes Engineering Unit of IPT 2014.

Heterogeneous catalysis

利用小角度X光散射、動態光散射探討二氧化矽／聚環氧乙烷懸浮液之結構與作用力

Adsorption of geses on liquids. Surface-active and surface-inactive substances. Gibbs’s equation, Shyshkovsky’s equations and Langmuir’s equations Plan.

Gas-Solid Interactions

Surface and Interface Chemistry  Solid/gas Interface

Ming 11/28/2011.  Aggregation of particles on surfaces or molecules into self-assembled monolayers is an intrinsically non-Langmuirian process  Interaction.

 Gasses make up the air around us  Primary gasses are Nitrogen and Oxygen  Small amounts of many other gasses are present.

Adsorption Modeling of physisorption in porous materials Part 1 European Master Bogdan Kuchta Laboratoire MADIREL Université Aix-Marseille.

Zhang Enren 1 Page Processes At Interfaces Chapter 28.

Efficient control of the bulk and surface rheological properties by using C8-C18 fatty acids as co-surfactants Zlatina Mitrinova,1* Zhulieta Popova,1.

How To Play This Quiz! If you want to choose a topic, click on the green button closest to it Next.

Review Of Statistical Mechanics Continued

Change of State.

Processes on Solid Surfaces Physical Chemistry CHM 351Dr Erdal OnurhanSlide 1 “Smooth” Surface of a Solid.

BASIC PRINCIPLES OF ELECTRODE PROCESSES Heterogeneous kinetics

Kindergarten Sight Words. Yes I can! Come here Look at me.

Aerosol Self Nucleation Why are we interested?  Contribute to natural aerosol concentrations  global warming implications  health implications  serve.

Examples other partition functions. Example 1. Show that For a grand canonical ensemble but we don’t know which thermodynamic property is related wi th.

Water Potential  The free energy per mole of water  Calculated from two components: Solute potential (osmotic pressure) Pressure potential (turgor pressure)

S OLID S TATE AND S URFACE C HEMISTRY ( LECTURE 10) Dr. Saeda Rwede Al-Mhyawi Assistant professor in physical chemistry Contact Info:

IC-1/38 Lecture Kinetics IC-2/38 Lecture What is Kinetics ? Analysis of reaction mechanisms on the molecular scale Derivation.

Characterization Techniques

Maebh A. Grace, Mark G. Healy, Eoghan Clifford

Acidified Water + Surfactant

From: Modeling Transmission Effects on Multilayer Insulation

Layering Transitions of Ribbon Polymers in Poor Solvents

Solid State and Surface Chemistry (lecture 2 adsorption)

Tensing Up for Lipid Droplet Formation

Figure 2-1. Illustration of the states of a system in terms of the gravitational energy of a ball.

P .K CHOURASIA PRESENTS SURFACE CHEMISTRY.

Surface Chemistry the study of physical and chemical phenomena that occur at the interface of two phases, including solid-liquid interfaces, solid-gas.

Dynamic Tension Reduction for Adsorption from a Micellar Solution

Adsorption hysteresis in mesopores.

Visualizing the Analogy between Competitive Adsorption and Colloid Stability to Restore Lung Surfactant Function Ian C. Shieh, Alan J. Waring, Joseph A.

Coralie Alonso, Alan Waring, Joseph A. Zasadzinski Biophysical Journal

The Direct Adsorption of Micelles to a Clean Air/Water Interface

Lattice gas with interactions

§8.4 Surface adsorption of solution

Volume 111, Issue 12, Pages (December 2016)

Plot of the surface tension (γ) and area.

Consider an isothermal reversible expansion of an ideal gas

Presentation transcript:

ADSORPTION

Surface Activity of Solutes Solute, c  oo Solutes that decrease surface tension are called “surfactants”  Solute, c

Here is me. I am trying to get your attention now.

Adsorption More solute we have less surface tension (free energy) is - favorable As a result solute concentrates onto surface - adsorption More solute we have more surface tension (free energy) is - unfavorable Solute is repelled by surface 

Specific Adsorption  - thickness of adsorption layer Solute concentration, c Surface concentration, c  Surface area,  “Volume” of adsorption layer, .  Specific adsorption, 

Adsorption Isotherms  Langmuir isotherm (for a solution) (for a gas) c or p  max

More Adsorption Isotherms  c or P    (a) Langmuir(b) Multilayer formation (c) “Positive cooperativity” (d) Hysteresis first layer