Tuning the K+ Concentration in the Tunnel of OMS-2 Nanorods Leads to a Significant Enhancement of the Catalytic Activity for Benzene Oxidation

• DOI: 10.1021/es403910s
• Publication Date: 2013-11-01T17:17:18Z
• Authors: Jingtao Hou; Liangliang Liu; Yuanzhi Li; Mingyang Mao; Haiqin Lv; Xiujian Zhao
• Keywords: Nanorod

OMS-2 nanorods with tunable K+ concentration were prepared by a facile hydrothermal redox reaction of MnSO4, (NH4)2S2O8, and (NH4)2SO4 at 120 °C adding KNO3 different KNO3/MnSO4 molar ratios. The nanorod catalysts are characterized X-ray diffraction, transmission electron microscopy, N2 adsorption desorption, inductively coupled plasma, photoelectron spectrometry. effect on the lattice oxygen activity is theoretically experimentally studied density functional theory calculations CO temperature-programmed reduction. results show that increasing leads to considerable enhancement in nanorods. An enormous decrease (ΔT50 = 89 °C; ΔT90 > 160 °C) temperatures T50 T90 (corresponding 50 90% benzene conversion, respectively) for oxidation has been achieved K+-doped due activity.