Global ETD Search
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Showing 1 to 7 of 7 for “"structure-directing agent"”.
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Ionothermal Synthesis of High Silica Zeolites in Deep Eutectic Solvents (DES)
… amounts of seeding, water content, and organic structure-directing agent (SDA). Sodalite and ZSM-39 were prepared in tetramethylammonium chloride (TMACl)/1, 6-hexanediol by using the mineralizing agents NaOH and NH4F, respectively. In urea/choline chloride, ZSM-5, Beta, ZSM-39, and ZSM-11 were …
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Zeolites to peptides: Statistical mechanics methods for structure solution and property evaluation
… in statistical mechanics are used to study structure and properties of zeolites and peptides. A Monte Carlo method is applied to solve structure of a newly synthesized zeolite. Understanding the structure of a zeolite could lead to optimization of chemical processes it is involved in. …
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Upconversion Phosphors for Efficient Solar Energy Harvesting
… prepared via hydrothermal synthesis where the structure directing agent (citric acid (CA) or trisodium citrate (TC)), NaF concentration (0.4-2.4 M), pH (5-12) or reaction time (2-16 h) was varied. Upconverters prepared with CA varied in phase composition, crystal shape and size. Weak emissions …
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Fundamental research of the solvent role in the ionothermal synthesis of microporous materials
… unnecessary. In addition, they have various structures which could render new structures to frameworks of zeolite. Furthermore, since the cations of some ILs have structures which are similar to common structure directing agents, they theoretically could be used both as solvent and structure …
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"Reactive hard templating" : from carbon nitrides to metal nitrides
Nanostructured inorganic materials are routinely synthesized by the use of templates. Depending on the synthesis conditions of the product material, either “soft” or “hard” templates can be applied. For sol-gel processes, usually “soft” templating techniques are employed, while “hard” templates are …
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Data Driven Synthesis Planning Applied to Zeolite Materials
… have accelerated understanding of material structure and properties, answering the question "What" materials to make for a specific application. These techniques have shifted the bottleneck in materials design to the synthesis and processing of materials, posing the question "How" to make a …
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Hydrocracking of n-C16 over MFI Zeolite Nano-sheets - Effect of the Si/Al Ratio
… + (CH3)2–C6H12–N + (CH3)2–C6H13 (C22-6-6) as structure-directing agent (SDA), could be extended to various Si/Al ratios in the range 25 – 100. The nano-sheets exhibited extra-framework Al (EFAl) species. Nano-sheets with Si/Al = 75 exhibited an oddly large amount of EFAl species compared to …