文献类型：期刊文献

英文题名：Preparation of MgO Nanosheets with Polar (111) Surfaces by Ligand Exchange and Esterification - Synthesis, Structure, and Application as Catalyst Support

作者：Zhu, Kake[1];Hua, Weiming[2];Deng, Wei[1];Richards, Ryan M.[3]

机构：[1]E China Univ Sci & Technol, Sch Chem Engn, UNILAB, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Fudan Univ, Dept Chem, Shanghai Key Lab Mol Catalysis & Innovat Mat, Shanghai 200433, Peoples R China;[3]Colorado Sch Mines, Dept Chem & Geochem, Golden, CO 80401 USA

年份：2012

期号：17

起止页码：2869

外文期刊名：EUROPEAN JOURNAL OF INORGANIC CHEMISTRY

收录：;EI(收录号：20231713959287);WOS:【SCI-EXPANDED(收录号:WOS:000304714700003)】；

基金：K. Z. is grateful for financial support from the National Natural Science Foundation of China (21006024), Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Department of Chemistry, Fudan University (No. 2010MCIMKF), Fundamental Research Funds for the Central Universities (WA0914023), and China National Petroleum Corporation (CPNP) Foundation (2011D-5006-0507). This work is also sponsored by the Shanghai Pujiang Program (11PJ1402600) and New Century Excellent Talents in University (NCET-11-0644). W. H. is grateful for the financial support from the State Basic Research Project of China (2006CB806103), National Natural Science Foundation of China (20773027), Research Fund for the Doctoral Program of Higher Education (20100071110008), and Science and Technology Commission of Shanghai Municipality (08DZ2270500).

语种：英文

外文关键词：Magnesium; Solvothermal synthesis; Nanostructures; Tasker III surfaces; Heterogeneous catalysis

摘要：Metastable magnesium hydroxymethoxide [Mg(OH)(OCH3)] powder with nanosheet morphology was derived from a direct bottom-up synthesis using magnesium acetate tetrahydrate as precursor under solvothermal conditions, with benzyl alcohol as structure-directing agent. The synthesis is driven by esterification of magnesium acetate to the corresponding methyl acetate, namely, ligand exchange and esterification of CH3COO with CH3O. A MgO powder featuring a Tasker III type (111) surface as its main exposed surface was produced after decomposition of the as-prepared Mg(OH)(OCH3) intermediate. X-ray diffraction (XRD) shows that the as-formed intermediate is Mg(OH)(OCH3), and methyl acetate is identified in the mother liquor by GCMS measurements. XRD, SEM, and TEM images also show that the surface of the MgO nanosheets is covered by a Tasker III (111) surface. The vanadia supported on this MgO (111) nanosheet surface is more active than the conventional MgO-supported system for the oxidative dehydrogenation of ethylbenzene with carbon dioxide, which is attributed to the oxygen-rich nature and intermediate basicity of the MgO (111) surface.