| Title: | Direct Molten Polymerization Synthesis of Highly Active Samarium Manganese Perovskites with Different Morphologies for VOC Removal |
| Author(s): | Liu L; Zhang H; Jia J; Sun T; Sun M; |
| Address: | "School of Environmental Science and Engineering , Shanghai Jiao Tong University , 800 Dong Chuan Road , Shanghai 200240 , P.R. China" |
| DOI: | 10.1021/acs.inorgchem.8b01125 |
| ISSN/ISBN: | 1520-510X (Electronic) 0020-1669 (Linking) |
| Abstract: | "A morphology-controlled molten polymerization route was developed to synthesize SmMnO(3) (SMO) perovskite catalysts with netlike (SMO-N), granular-like (SMO-G), and bulk (SMO-B) structures. The SMO perovskites were formed directly by a molten polymerization method, and their morphologies were controlled by using the derivative polymers as templates. Among all catalysts, the porous SMO-N exhibited the highest activity, over which the toluene, benzene, and o-xylene were completely oxidized to CO(2) at 240, 270, and 300 degrees C, respectively, which was comparable to that of typical noble-metal catalysts. The apparent activation energies of toluene over SMO-N (56.4 kJ.mol(-1)) was much lower than that of SMO-G (70.8 kJ.mol(-1)) and SMO-B (90.1 kJ.mol(-1)). Based on the results of scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and H(2) temperature-programmed reduction characterization, we deduce that the excellent removal efficiency of volatile organic compounds (VOCs) over SMO-N catalyst was attributable to the special structure, high surface Mn(4+)/Mn(3+) and O(latt)/O(ads) molar ratios, and strong reducibility. Due to the high activity, low cost, and simple preparation strategy, the SMO catalyst is a promising catalyst for VOC removal" |
| Notes: | "PubMed-not-MEDLINELiu, Lizhong Zhang, Hongbo Jia, Jinping Sun, Tonghua Sun, Mengmeng eng 2018/07/03 Inorg Chem. 2018 Jul 16; 57(14):8451-8457. doi: 10.1021/acs.inorgchem.8b01125. Epub 2018 Jul 2" |
