Catalyst Characterization: Chemical Techniques 17 10 2024

The Derby -Scherer equation's application is limited based on

• Pore volume

• Particle size

• Surface area

• Diffraction Angle

Which technique is likely to have produced the image?

• X Ray diffraction

• X ray Fluorescence

• Transmission Electron Microscopy

• The technique is not among the options

The Mass Spectrometer in the Inductively Coupled Plasma-Mass spectrometry system is used to_______________

• generate electrons

• calcinate samples

• separate and quantify ions

• integrate and differentiate concentrations

TGA Analyses can provide information on______________________

• how a material reacts with methane as temperature changes

• how the weight of material decreases with an increase in temperature

• how the weight of a material increases as temperature decreases

• how the weight of a material increases as temperature increases

Which of the statements is not correct about the image?

• Not all the sample has decomposed at 800 degrees Celsius,

• More than 29.4% of the sample is decomposed by 200 degrees Celsius

• Not more than 9% of the sample is decomposed at 100 degrees Celsius

• There is a drastic weight change around 340 to 360 degrees celsius

Transmission Electron spectroscopy allows for identifying particles by___________

• forming dark spots formed on the positive of the detecting film

• transmitting micro waves through the samples

• introducing laser beams

• magnifying the sample 2 times

Which of the following techniques will require the analyses of desorbed gases ?

• Temperature programmed oxidation

• Temperature programmed reduction

• Thermogravimetric analyses

• Thermal programmed desorption

Which of the following techniques would you recommend for elemental analyses?

• X ray diffraction

• Inductively Coupled Plasma-Mass spectrometry

• Transmission Electron Microscopy

• Temperature programmed desorption

D=kλ/βCOSΘ

β in the equation represents________________

• Shape factor

• Crystallite size

• Wavelength of X-ray

• Full Width at Half maximum

Which of these statements is not true for XRD analyses?

• Relative crystallinity can be determined

• Diffractograms are plotted in 2 theta values

• The analyses shows better results for amorphous materials

• The sample is required to diffract X-rays