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Changing the conditions of Temperature Programmed Reduction analysis

20:58

Examples of Temperature Programmed Reduction analysis of metal oxides

15:30

Temperature Programmed Analysis - Instrument Setup

15:27

Gas Adsorption Isotherm - Types and Interpretation

19:43

Gas Adsorption and Desorption Isotherms Explained

17:55

The origin of hysteresis in gas adsorption - desorption isotherms

13:37

Strange hairy growth during reaction of mercury with aluminium

Here we show the strange growth from the surface of aluminium when it reacts with liquid mercury. We also show how we obtained a good reaction and what we think the hairy material is.

zhlédnutí: 59

Video

Changing the conditions of Temperature Programmed Reduction analysis

20:58

Changing the conditions of Temperature Programmed Reduction analysis

zhlédnutí 155Před 4 měsíci

In this presentation we look at how changing the conditions of sample mass, heating rate and gas flow rate influences a TPR profile of CuO

Examples of Temperature Programmed Reduction analysis of metal oxides

15:30

Examples of Temperature Programmed Reduction analysis of metal oxides

zhlédnutí 310Před 4 měsíci

Here we present some TPR profiles of various metal oxides we have prepared - Manganese Dioxide, Cobalt Oxide and Copper Oxide. We also look at hydrogen consumption and the multi-step reduction sequences of thes

Temperature Programmed Analysis - Instrument Setup

15:27

Temperature Programmed Analysis - Instrument Setup

zhlédnutí 167Před 4 měsíci

@ MCA Services This presentation shows the instrument set up and experimental steps for performing Temperature Programmed Analyses: Reduction, Oxidation, Desorption and Decomposition

Gas Adsorption Isotherm - Types and Interpretation

19:43

Gas Adsorption Isotherm - Types and Interpretation

zhlédnutí 11KPřed 2 lety

In this presentation we show the different classifications of gas adsorption isotherms and how they relate to pore characteristics. We show how they are applied to the determination of pore size, and pore volume.

Gas Adsorption and Desorption Isotherms Explained

17:55

Gas Adsorption and Desorption Isotherms Explained

zhlédnutí 17KPřed 2 lety

In this presentation we show gas adsorption and desorption isotherms: the presence and classification of isotherm hysteresis and how this affects our interpretation of isotherms when determining pore size distributions.

The origin of hysteresis in gas adsorption - desorption isotherms

13:37

The origin of hysteresis in gas adsorption - desorption isotherms

zhlédnutí 9KPřed 2 lety

In this presentation we explain the origin of gas sorption hysteresis, how it applies to different pore geometries and how it affects our interpretation of isotherms when determining pore size and pore volume data.

Chemisorption Analysis by Static and Dynamic Gas Sorption

17:18

Chemisorption Analysis by Static and Dynamic Gas Sorption

zhlédnutí 3,2KPřed 3 lety

In this presentation we show the two most common methods of chemisorption analysis: static and dynamic/ pulse. These are used for the characterisation of catalysts to determine active metal dispersion, surface area and crystallite size. We also show some other analytical techniques which can be undertaken, including Temperature Programmed Analyses and Heat of Adsorption analysis.

Introduction to Chemisorption Analysis: Theory

13:29

Introduction to Chemisorption Analysis: Theory

zhlédnutí 4,1KPřed 3 lety

An introduction to chemisorption analysis by gas adsorption for determining the characteristics of active catalyst species. This presentation covers some background theory and shows how we calculate catalyst dispersion, active area and crystallite size.

An introduction to gas sorption analysis, pore size and BET surface area measurement

16:05

An introduction to gas sorption analysis, pore size and BET surface area measurement

zhlédnutí 72KPřed 4 lety

In this video we show the process of gas adsorption during the measurement of gas adsorption / desorption isotherms. We present the process of adsorption as the isotherm is collected, showing regions of the isotherm that relate to micro-pores, meso-pores and macro-pores, as well as the BET surface area. Finally, we show the derivation of micro-pore size data using DFT and meso-pore / macro-pore...

How to use N2 and Kr gas adsorption isotherms to calculate BET Surface Area

10:51

How to use N2 and Kr gas adsorption isotherms to calculate BET Surface Area

zhlédnutí 11KPřed 4 lety

We use gas sorption software to show you how to fit BET transform data to a nitrogen adsorption isotherm to calculate BET Surface area. We then show you a poor quality nitrogen adsorption isotherm of a low surface area sample and compare it to a krypton adsorption isotherm. This shows how useful krypton adsorption isotherms are when we analyse very low surface area materials

BET Surface Area Measurement by Krypton Adsorption Instead of Nitrogen Adsorption

12:58

BET Surface Area Measurement by Krypton Adsorption Instead of Nitrogen Adsorption

zhlédnutí 8KPřed 4 lety

In this video we show the measurement of BET Surface Area using krypton adsorption isotherm data. We show that for very low surface area materials nitrogen adsorption data becomes unreliable due to free-space correction errors. We then explore why krypton adsorption provides high quality isotherms when analysing low surface area materials and we compare nitrogen and krypton isotherms and BET Su...

An Introduction to BET Surface Area Measurement

10:23

An Introduction to BET Surface Area Measurement

zhlédnutí 67KPřed 4 lety

In this video we present the calculation of BET surface area from gas adsorption isotherms. We start by looking at the adsorption process and mono-layer formation during a nitrogen adsorption analysis and then we explore the BET region of the isotherm. We present the BET equation in terms of the theory behind it and then the practical application of it to calculate the BET surface area of a rea...