Electrochemical behavior of Ce(IV)/Ce(III) couple in N,N‐di(2‐ethylhexyl)‐n‐butanamide (DEHBA), N,N‐di(2‐ethylhexyl)‐iso‐butanamide (DEHiBA), and N,N‐di(2‐ethylhexyl)‐3,3‐dimethyl butanamide (DEHDMBA)