Instruction
1
To obtain benzene from hexane use the so-called "aromatization of hexane". This reaction occurs when a linear molecule of hexane becomes "closed", with simultaneous cleavage of the "extra" hydrogen atoms. The reaction takes place according to the following scheme:

С6Н14 = С6Н6 + 4Н2.

A prerequisite for the above reaction is a high temperature (around 520-550 degrees), pressure, the use of chromium or aluminum catalysts are coated with a thin layer of such an expensive material as platinum that contain supplements and some other metals.
2
Also to benzene from hexane you can and with the dehydrogenation of cyclohexane. This reaction takes place in two stages. First from hexane, "Tsaplya" end hydrogen atoms, will receive a cyclohexane according to the following scheme:

С6Н14 = С6Н12 + H2.
3
Then cyclohexane, by further dehydrogenation, turn in benzene. The response will look like the following:

С6Н12 = С6Н6 + 3Н2.

Here you will also need high temperature and the same pressure. Also, use a Nickel catalyst.
4
As you can easily verify the methods described above, such reactions are feasible only in industrial environments, because it requires special equipment that can withstand high temperature and pressure. Not to mention the use of catalysts containing less expensive metal, like platinum. Therefore, to obtain benzene in laboratory conditions, n-hexane as a raw material is not suitable.