Ionothermal Synthesis of Magnesium‐Containing Aluminophosphate Molecular Sieves and their Catalytic Performance

Wang, Lei; Xu, Yunpeng; Wang, Bingchun; Wang, Shaojun; Yu, Jihong; Tian, Zhijian; Lin, Liwu

doi:10.1002/chem.200801383

Cited by 45 publications

(27 citation statements)

References 53 publications

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“…In another study, magnesium-containing aluminophosphates were synthesized using [BMim][Br]. [343] More recently, gallophosphate molecular sieves such as GaPO 4 -a, cloverite (CLO), and GaPO 4 -LTA were ionothermally synthesized using 1-alkyl-3-methyl imidazolium bromide ionic liquids. [344] Additional organic amines have been found to affect the crystallization process of ionothermal reactions.…”

Section: Open-framework Structuresmentioning

confidence: 99%

Preparation of Inorganic Materials Using Ionic Liquids

2009

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Conventional synthesis of inorganic materials relies heavily on water and organic solvents. Alternatively, the synthesis of inorganic materials using, or in the presence of, ionic liquids represents a burgeoning direction in materials chemistry. Use of ionic liquids in solvent extraction and organic catalysis has been extensively studied, but their use in inorganic synthesis has just begun. Ionic liquids are a family of non-conventional molten salts that can act as templates and precursors to inorganic materials, as well as solvents. They offer many advantages, such as negligible vapor pressures, wide liquidus ranges, good thermal stability, tunable solubility for both organic and inorganic molecules, and much synthetic flexibility. In this Review, the use of ionic liquids in the preparation of several categories of inorganic and hybrid materials (i.e., metal structures, non-metal elements, silicas, organosilicas, metal oxides, metal chalcogenides, metal salts, open-framework structures, ionic liquid-functionalized materials, and supported ionic liquids) is summarized. The status quo of the research field is assessed, and some future perspectives are furnished.

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Section: Open-framework Structuresmentioning

confidence: 99%

Preparation of Inorganic Materials Using Ionic Liquids

2009

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“…have been incorporated in the AlPO-n framework, which has led to redox and catalytic activities. [9][10][11] Moreover, ILs are excellent solvents for the initial inorganic species, thus enabling them to be used as an alternative to the tetraalkylammonium cations in the preparation of microporous materials.…”

Section: Introductionmentioning

confidence: 99%

Micro‐ to Macroscopic Observations of MnAlPO‐5 Nanocrystal Growth in Ionic‐Liquid Media

Itani

Sekhon

et al. 2010

Chemistry A European J

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Micro- and macroscopic studies of nucleation and growth processes of MnAlPO-5 nanosized crystals under ionothermal synthesis conditions are reported herein. The samples treated at 150 °C were extracted from the reaction mixture at various stages of crystallization, and characterized by XRD; SEM; thermogravimetric analysis (TGA); (31)P and (27)Al solid-state magic angle spinning (MAS) NMR, Raman, UV/Vis, and X-ray fluorescence spectroscopy (XRF). The starting raw materials (alumina, manganese, and phosphorous) were dissolved completely in the ionic liquid and transformed into an amorphous solid after 5 h of ionothermal treatment. This amorphous solid then undergoes structural changes over the following 5-25 h, which result in an intermediate phase that consists of octahedral Al species linked to the manganese and phosphate species. The first MnAlPO-5 nuclei on the surface of the intermediate can be observed after 50 h ionoheating. These nuclei further grow, as the surface of the intermediate is in full contact with the ionic liquid, to give crystalline MnAlPO-5 nanoparticles with a mean diameter of 80 nm. The crystals become fully detached from the intermediate and are then liberated as discrete particles after 90 h heating. The transformation process from amorphous to intermediate and then to the crystalline MnAlPO-5 nanoparticles shows that nucleation starts at the solid-liquid interface and continues through surface-to-core reversed-growth until the entire amorphous solid is transformed into discrete nanocrystals.

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“…Based on this finding, they proposed that cobalt hydroxide added to the synthesis mixture may contribute an additional structure‐directing effect along with the organic cation of the ionic liquid. Subsequently, Tian's group also observed similar effect as they prepared magnesium‐incorporated aluminophosphate zeolites with ionothermal method . In our previous study related with microwave‐assisted ionothermal synthesis, it was found that various product phases can be prepared under the same conditions when three kinds of iron compounds were added to the reaction system, respectively .…”

Section: Introductionmentioning

confidence: 76%

Synthesis of ATN‐Type FeAPO‐39 Molecular Sieves without Solvent using the Additional Structure‐Directing Effect of the Iron Source

et al. 2018

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ATN-type FeAPO-39 molecular sieves with high iron content has been successfully synthesized under non-solvent conditions, which is the first example of iron-incorporated aluminophosphate with the ATN-zeotype structure. The optimum synthetic conditions of this material were refined. It was found that the following synthetic conditions, i.e. a low P 2 O 5 /Al 2 O 3 ratio, a high DPA/Al 2 O 3 ratio (DPA: di-n-propylamine) and an elevated crystallization temperature, seemed to be more favorable for the non-solvent synthesis of ATN phase. The composition and structural characteristics of resultant relatively pure FeAPO-39 molecular sieves were intensively studied by XRD, FT-IR, TG-DTA, CHN elemental analysis, ICP-AES, SEM, TEM, [a]

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Ionothermal Synthesis of Magnesium‐Containing Aluminophosphate Molecular Sieves and their Catalytic Performance

Cited by 45 publications

References 53 publications

Preparation of Inorganic Materials Using Ionic Liquids

Preparation of Inorganic Materials Using Ionic Liquids

Micro‐ to Macroscopic Observations of MnAlPO‐5 Nanocrystal Growth in Ionic‐Liquid Media

Synthesis of ATN‐Type FeAPO‐39 Molecular Sieves without Solvent using the Additional Structure‐Directing Effect of the Iron Source

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