( ( ( ( ( ( Reaction times ) ( can ( run ( ( as ( long ( as 6 ) ) ) days ) ) ) ) , ) and ) ( ( the catalyst ) ( ( is not ) recyclable ) ) ) . )
(ROOT (S (S (NP (NN Reaction) (NNS times)) (VP (MD can) (VP (VB run) (NP (QP (RB as) (JJ long) (IN as) (CD 6)) (NNS days))))) (, ,) (CC and) (S (NP (DT the) (NN catalyst)) (VP (VBZ is) (RB not) (ADJP (JJ recyclable)))) (. .)))
Reaction times can run as long as 6 days, and the catalyst is not recyclable.
(ROOT (S (SBAR (IN If) (S (NP (DT a) (NN catalyst)) (VP (VBZ runs) (PRT (RP out))))) (, ,) (NP (DT the) (NN reaction)) (VP (VBZ slows)) (. .)))