Hyok Ri Sung, Bi Fukun, Guan Aili, Zhang Xiaodong
School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China; Ri Su Bok Sunchon Chemical Engineering University, Pyongan Suoth Province, Democratic People's Republic of Korea.
School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China.
J Colloid Interface Sci. 2021 Mar 15;586:836-846. doi: 10.1016/j.jcis.2020.11.008. Epub 2020 Nov 6.
Manganese-cerium metal oxide with flocculent structure prepared via the pyrolysis of Mn/Ce-MOF and supported Pd were applied for the catalytic oxidation of toluene. The Pd/Mn3Ce2-300 catalyst could completely oxidize toluene at 190 °C, which presented excellent catalytic performance. Moreover, Pd/Mn3Ce2-300 possessed great reusability, stability and water resistance even under 10 vol% water vapors. A series of characterizations including X-ray diffraction (XRD), N adsorption-desorption, scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and H temperature programmed reduction (H-TPR) were used to investigate the physicochemical properties of the samples. It was found that Pd/Mn3Ce2-300 possessed a better reduction ability at low temperature, more surface absorbed oxygen and surface Pd species, and a strong interaction between Pd and Mn3Ce2-300, resulting in great catalytic performance for toluene degradation.
通过热解锰/铈金属有机框架（Mn/Ce-MOF）制备的具有絮状结构的锰铈金属氧化物负载钯，用于甲苯的催化氧化。Pd/Mn3Ce2-300催化剂在190℃时可将甲苯完全氧化，表现出优异的催化性能。此外，即使在10体积%的水蒸气存在下，Pd/Mn3Ce2-300仍具有良好的可重复使用性、稳定性和耐水性。采用一系列表征手段，包括X射线衍射（XRD）、N吸附-脱附、扫描电子显微镜（SEM）、X射线光电子能谱（XPS）和H程序升温还原（H-TPR）来研究样品的物理化学性质。结果发现，Pd/Mn3Ce2-300在低温下具有较好的还原能力、更多的表面吸附氧和表面Pd物种，以及Pd与Mn3Ce2-300之间的强相互作用，从而对甲苯降解具有优异的催化性能。
