Preparation of Functional Silica Aerogels Using Ionic Liquids as Solvents

Yuan, Chaoping; Dai, Sheng; Ying-qin, Wei; Chen-Yang, Y. W.

doi:10.1021/bk-2002-0818.ch008

Cited by 6 publications

(1 citation statement)

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“…[21] Our group has been working on the design of new ionic liquids, [22][23][24][25][26] the physicochemical properties of ionic liquids, [27][28][29] the applications of ionic liquids in solvent extraction, [30][31][32][33][34][35] sensing, [36] and chemical separation, [25] as well as the fabrication of inorganic materials using ionic liquids. [37][38][39][40][41][42][43][44][45] For instance, our group has developed a new class of ionic liquids whose cations are formed via the metal-ion-transfer reaction of organic compounds with inorganic salts. [23] The key feature of this class of ionic liquids is that their cations consist of metal-ion complexes.…”

Section: Introductionmentioning

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: Introductionmentioning

confidence: 99%

Preparation of Inorganic Materials Using Ionic Liquids

2009

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Ionic Liquids

Stark¹,

Seddon²

2007

Kirk-Othmer Encyclopedia of Chemical Technology

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This article deals with the literature on ionic liquids, with the focus on nomenclature, preparation, and handling of the second‐generation ionic liquids. In the older (and some current) literature, ionic liquids are sometimes called liquid organic salts, fused salts, molten salts, ionic melts, NAILs (nonaqueous ionic liquids), room‐temperature ionic liquids, OILs (organic ionic liquids) and ionic fluids. Their most prominent feature, namely the potential of tuning their physical properties to suit a particular application, is discussed in detail. In addition, areas in which ionic liquids are already applied, and in which their properties promise favorable application in transition‐metal catalyzed reactions, are reviewed. In recent years, many ionic liquids have emerged as environmentally benign alternatives to volatile organic compounds (VOCs, such as trichloromethane, ethanenitrile and dimethylmethanamide), which cause emissions and effectively damage the ecological balance. The merit of ionic liquids, in this respect, is their negligibly small vapor pressure; therefore they are easily retained in a process. This concept has been realized, especially in preparative chemistry, as shown in many examples in this article: when used as solvents in catalytic processes, separation of the solvent (and the catalyst) from the product is facilitated, and recycling is easily possible.

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