Carbide aerogels

Figure 13.20. A. Poly[acrylonitrile]-crossliiiked silica decorated with Si-AIBN (pt = 0.47 gcm", 60%, w/w, polymer, 228 g 60%, v/v, empty space). B. Pure silicon carbide aerogel by pyrolysis of the poly[acrylonitrile]-crosslinked silica shown in A. (pi, = 0.97 gcm, skeletal density Ps = 3.12 gcm , 39 g" , 69%, v/v, empty...

Leventis N, Sadekar A, Chandrasekaran N, Sotiriou-Leventis C (2010) Click synthesis of monolithic silicon carbide aerogels from poly acrylonitrile-coated 3D silica networks. Chem Mater 22 2790-2803 Boday D J, DeFriend K A, Wilson K V Jr, Coder D, Loy D A (2(X)8) Formation of polycyanoacrylate-sUica nanocomposites by chemical vapor deposition of cyanoacrylates on aerogels. Chem Mater 20 2845-2847 Boday D J, Stover R J, Muriithi B, Keller M W, Wertz J T, DeFriend Obrey K A, Loy D A (2009) Strong, low density nanocomposites by chemical vapor depositim and polymerization of cyanoacrylates on aminated siUca aerogels. ACS Appl Mater Interfaces 1 1364—1369... 

Rhine W, Wang J, Begag R (2006) Polyimide aerogels, carbon aerogels, and metal carbide aerogels and methods of making same. US Pat No 7,074,880... 

Carbnrization of the Mo-doped organic aerogel yielded a higher percentage of carbide phase with better dispersion than that of carbnrization of the Mo-doped carbon aerogel. 

X. K. Li, L. Liu, Y. X. Zhang, Sh. D. Shen, Sh. Ge and L. Ch. Ling, Synthesis of nanometre silicon carbide whiskers from binary carbonaceous silica aerogels. Carbon, 39,159-165(2001). 

Gu, W., and G. Yushin. 2014. Review of nanostructured carbon materials for electrochemical capacitor applications Advantages and limitations of activated carbon, carbide-derived carbon, zeolite-templated carbon, carbon aerogels, carbon nanotubes, onion-Uke carbon, and graphene. Wiley Interdisciplinary Reviews Energy and Environment 3 424-473. 

In another study, Cr, Mo and W oxides loaded carbon aerogel catalysts have been prepared by Moreno-Castilla et al. [42] by dissolving metal salts in aqueous solutions of resorcinol and formaldehyde. According to X-ray diffraction results, the metal oxide or carbide was well dispersed inside the organic matrix. 

Perez-Cadenas A F, Maldonado-Hodar F J, Moreno-Castilla C (2005) Molybdenum carbide formation in molybdenum-doped organic and carbon aerogels. Langmuir 21 10850-10855... 

ElectrochemicaUy active materials such as activated carbons, carbon aerogels, and carbon foams (aU derived from polymers) oxides, hydrous oxides, carbides, and nitrides are used to form composites with carbon nanofibers. Additional active materials such as oxides, hydrous oxides, and carbides can be combined to form a composite. Process requires dispersion in water with carbon nanofiber and subsequent filtralion and washing. Capacitance of 249 F /g was measured from a RuOj xHjO metal oxide and carbon nanofiber composite. 

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