The detrimental impact of freons on the ozone layer protecting the earth’s surfa
ID: 1072057 • Letter: T
Question
The detrimental impact of freons on the ozone layer protecting the earth’s surface from excessive ultraviolet radiation had become clear enough to lead to political action to restrict frons. Research on the manufactures of substitute freons was leading to the discovery of new catalysts. Find out what the substitutes for Freon are and how they are made:
1) What are major catalyst systems?
2) how to prepare catalysts?
3) how to evaluate catalytic performance?
4) how to characterize catalytic surface kinetic?
5) Any extension that you plan to do if you are assigned into this project?
Explanation / Answer
Freons analysis
1) major catalyic systems are antimony chlorides used for the system.
2) the catalyst is prepared by reaction of antimnony hexachloride with antimony trifluoride.
3) Catalytic performance of the catalyst can be tested by running the reaction over a bed of same catalyst for several cycles and testing for the conversion and selectivity in each step and then overall process.
4) catalytic surface kinetic was observed by spectroscopic methods.
5) The proect can be extended on the design of newer and faser freon-type compounds and catalysts for the same.