Silica hollow

Fan W, Gao L (2006) Synthesis of silica hollow spheres assisted by ultrasound. J Colloid Interface Sci 297 157-160... 

Song LY, Ge XW, Zhang ZC (2005) Interfacial fabrication of silica hollow particles in a reverse emulsion system. Chem Lett 34 1314-1315... 

Figure 2.37 Permeability coefficients as a function of the gas kinetic diameter in micro-porous silica hollow fine fibers [58]. Reprinted from J. Membr. Sci. 75, A.B. Shelekhin, A.G. Dixon and Y.H. Ma, Adsorption, Permeation, and Diffusion of Gases in Microporous Membranes, 233, Copyright 1992, with permission from Elsevier...

Using SCF processes such as these, polymers and inorganic materials have been formed into films, fibres and spherical particles. For example, mesoporous silicate films and mesoporous silica hollow spheres have both been recently prepared using SCCO2 based technologies. ... 

Inorganic membranes are very resistant and quite stable at hard-operating conditions. Several materials are available. Different membranes have been successfully tested for separations involving supercritical fluids such as tubular carbon membranes [ 1 ], mbular silica membranes [2-5], silica hollow fibber membranes [6], zeolite membranes [7-10], titane-nafion membranes [11], polycarbonate membrane [12], nanofilter having a thin layer of Zr02-Ti02 [12], and silicalite membranes [4]. 

Taubert A, Li Z (2007) Inorganic materials from ionic liquids. Dalton Trans p 723 Kuang DB, Brezesinski T, Smarsly B (2004) Hierarchical porous silica materials with a trimodal pore system using surfactant templates. J Am Chem Soc 126 10534 Wu XF, Tian YJ, Cui YB, Wei LQ, Wang Q, Chen YF (2007) Raspberry-like silica hollow spheres hierarchical structures by dual latex-surfactant templating route. J Phys Chem C 111 9704... 

Diethyl tartarate Pervatech silica Hollow fibers 85 Amberlyst 15 PER + ESU (parallel, series) and PER + ISU Nemec and Van Gemert (2005)... 

The product obtained under acid conditions was an ellipsoid nanoparticle, and that obtained under alkaline condition was hollow silica ensembles. The study revealed that [bmimJBF played a critical role in the process of formation of the mesoporous silica hollow structure. It was thus evident that nonaqueous IL microemulsions can contribute to the synthesis of materials with various structures by providing a reaction environment that is able to control the size and morphology of the materials. 

Li, L. et al. (2009) A facile one-step route to synthesize cage-like silica hollow spheres loaded with superparamagnetic iron oxide nanoparticles in their shells. Chemical Communications, 938-940. 

Hollow ceria nanostructures can be also prepared with the help of other hard templates. Jian, Du, and co-worker used a silica sphere as a hard template." Ceria nanocrystals were precipitated on the silica sphere to form a polycrystalline shell. After etching with NaOH solution to remove the silica, hollow spheres were obtained. Strandwitz and Stucky also used this method to obtain uniform hollow ceria spheres." ... 

CW. (2013) Aminosilane-graiied polymer/silica hollow fiber adsorbents for... 

Khanal, A., Inoue, Y., Yada, M., and Nakashima, K. (2007) Synthesis of silica hollow nanoparticles templated by polymeric micelle with core-shell-corona structure. /. Am. Chem. Soc., 129, 1534-1535. 

Arnal, P.M., Weidenthaler, C.. and Schiith, F. (2006) Highly monodisperse zirconia-coated silica spheres and zirconia/silica hollow spheres with remarkable textural properties. Chem. Mater., 18, 2733-2739. 

Han, L Gao, C., Wu, X., Chen, Q., Shu, P Ding, Z and Che, S. (2011) Anionic sur ctants templating route for synthesizing silica hollow spheres with different shell porosity. Solid State Sci., 13, 721-728. 

Wang, X., Miao, X., Li, Z., and Deng, W. (2010) Fabrication of mesoporous silica hollow spheres using triblock copolymer PEG-PPG-PEG as template. J. Non-Cryst. Solids, 356, 898-905. 

Yuan, J., Zhou, T., and Pu, H. (2010) Nano-sized silica hollow spheres preparation, mechanism analysis and its water retention property. J. Phys. Chem. Solids, 71, 1013-1019. 

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