Ionothermal synthesis and characterization of CoAPO-34 molecular sieve

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• 作者：Mazlina Musa^a ; ^b ; ^{mazlinam@fsmt.upsi.edu.my} ; Daniel M. Dawson^a ; ^{dmd7@st-andrews.ac.uk} ; Sharon E. Ashbrook^a ; ^{sema@st-andrews.ac.uk} ; Russell E. Morris^a ; ^{rem1@st-andrews.ac.uk}
• 关键词：CoAPO-34 ; Aluminophosphate ; Ionothermal synthesis ; 1-Ethyl-3-methylimidazolium bromide ; 1 ; 6-Hexanediamine
• 刊名：Microporous and Mesoporous Materials
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：239
• 期：Complete
• 页码：336-341
• 全文大小：1052 K
• 卷排序：239

文摘

The cobalt-doped aluminophosphate molecular sieve, CoAPO-34 (with the chabazite-type topology) was prepared under ionothermal conditions using 1-ethyl-3-methylimidazolium bromide (EMIMBr) ionic liquid in presence of 1,6-hexanediamine (HDA). The HDA is not incorporated in CoAPO-34, but is required to mediate the availability of Co2+ during the synthesis. The material was characterized using powder X-ray diffraction (pXRD), thermogravimetric analysis (TGA) and solid-state NMR spectroscopy. Wideline 31P NMR spectroscopy showed broad signals (∼5000–10000 ppm wide), confirming that paramagnetic cobalt ions are successfully incorporated within the framework of the materials.