Discussion
Consider the following statements about catalytic reforming.
1. It converts naphthenes and paraffins into aromatics.
2. Hydrogen is a valuable by-product of the process.
3. It is a strongly exothermic reaction requiring cooling.
Answer: D
Correct answer: 1 and 2 only
Statements 1 and 2 are correct: reforming dehydrogenates naphthenes and cyclises paraffins into aromatics, and the hydrogen released is a valuable by-product that supplies the refinery’s hydrotreaters. Statement 3 is inverted - the dominant dehydrogenation reactions are strongly *endothermic*, which is why the process uses several reactors in series with a fired heater between each.
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