10.1021/acs.iecr.6b02640.s001 Makoto Akizuki Makoto Akizuki Nanae Fujioka Nanae Fujioka Yoshito Oshima Yoshito Oshima Catalytic Effect of the SUS316 Reactor Surface on the Hydrolysis of Benzamide in Sub- and Supercritical Water American Chemical Society 2016 SUS 316 reactor surface surface Fe 2 O 3 SUS 316 Reactor Surface surface-catalyzed reaction water density hydrolysis SUS 316 reactor 2016-09-09 00:00:00 Journal contribution https://acs.figshare.com/articles/journal_contribution/Catalytic_Effect_of_the_SUS316_Reactor_Surface_on_the_Hydrolysis_of_Benzamide_in_Sub-_and_Supercritical_Water/3842652 The catalytic effect of an SUS316 reactor surface on the hydrolysis of benzamide in sub- and supercritical water was investigated at 350–450 °C and 25–65 MPa. Tube reactors having different surface area to volume ratios were used to distinguish the effect of the homogeneous reaction and the surface-catalyzed reaction. The surface of an SUS316 reactor acted as a heterogeneous catalyst for the hydrolysis reaction. Kinetic analysis indicated that surface Fe<sub>2</sub>O<sub>3</sub> mainly contributes to the catalytic effect of SUS316. Both homogeneous and surface-catalyzed reactions occurred, and the contribution of each reaction depended on water density. The surface-catalyzed reaction was dominant at low water density, and the contribution from the homogeneous reaction became larger with increasing water density. Furthermore, at 400 °C and 25 MPa, hydrolysis products promoted the reaction.