Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China.
Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China.
J Hazard Mater. 2018 Jan 15;342:290-296. doi: 10.1016/j.jhazmat.2017.08.036. Epub 2017 Aug 18.
A novel heterostructured material, cobalt phosphate-SiO mesostructured cellular foams (CoPO-MCF), was successfully synthesized by in situ growth. The material was characterized by X-ray diffraction (XRD), nitrogen sorption, temperature-programmed reduction (H-TPR and CO-TPR), temperature-programmed desorption of NH (NH-TPD), and X-ray photoelectron spectroscopy (XPS). A ruthenium precursor was readily introduced and highly dispersed on the CoPO nanophases of the CoPO-MCF through an impregnation method. The resulting Ru/CoPO-MCF catalyst exhibited high catalytic activity for the oxidation of vinyl chloride (VC). The results of three consecutive runs and long-term tests showed high stability of the Ru/CoPO-MCF for the catalytic oxidation of VC. The unique heterostructures of the CoPO-MCF not only improve the reducibility and acidity of the MCF but also strengthen the interaction between ruthenium oxide nanoparticles and the CoPO-MCF support, which contributes to the enhanced catalytic performance.
一种新型的杂化结构材料，磷酸钴-二氧化硅介孔蜂窝泡沫（CoPO-MCF），通过原位生长成功合成。该材料通过 X 射线衍射（XRD）、氮气吸附、程序升温还原（H-TPR 和 CO-TPR）、氨程序升温脱附（NH-TPD）和 X 射线光电子能谱（XPS）进行了表征。通过浸渍法，很容易将钌前体引入并高度分散在 CoPO-MCF 的 CoPO 纳米相中。所得的 Ru/CoPO-MCF 催化剂对氯乙烯（VC）的氧化表现出很高的催化活性。连续三次运行和长期测试的结果表明，Ru/CoPO-MCF 对于 VC 的催化氧化具有很高的稳定性。CoPO-MCF 的独特杂化结构不仅提高了 MCF 的还原性和酸度，而且增强了氧化钌纳米粒子与 CoPO-MCF 载体之间的相互作用，这有助于提高催化性能。
