What are the different types of reactions that alkanes undergo?

(N/A) $1$. Substitution reactions: Alkanes undergo free radical substitution,such as halogenation (Fluorination,Chlorination,Bromination,and Iodination).
$2$. Combustion: Alkanes react with oxygen to produce $CO_2$,$H_2O$,and heat.
$3$. Controlled oxidation: Alkanes can be oxidized to alcohols,aldehydes,or carboxylic acids using specific catalysts.
$4$. Isomerization: $n$-alkanes are converted into branched-chain isomers in the presence of $AlCl_3$ and $HCl$.
$5$. Aromatization: Alkanes with $6$ or more carbon atoms are converted into benzene and its homologs at high temperature and pressure in the presence of catalysts like $V_2O_5$ or $Cr_2O_3$.
$6$. Reaction with steam: Alkanes react with steam in the presence of a nickel catalyst to form carbon monoxide and hydrogen (steam reforming).
$7$. Pyrolysis (Cracking): Decomposition of alkanes into smaller hydrocarbons by heating in the absence of air.