Catalyst characterization techniques are used in order to determine some physical as well as some chemical properties of the catalysts. Data from physisorption experiments reveal information about surface area and pore volume and data from chemisorption reveal interesting outcomes associated with the active surface area and surface reaction kinetics. In the course, you took three characterization techniques. Discuss them and provide data about them upon searching the internet $($data different than the ones on the slides$).$ In other terms, provide data on TPR $($for instance$)$ and explain the graph that you chose upon citing the reference. Do that for the three techniques covered in class. Moreover, add to these three techniques additional characterization techniques $($a total of three$)$ and explain the role and importance of each. Finally, classify all these six techniques into chemical or physical ones.