C-CnF

Considering n = l, nFFpi = qp pj (C/cnF), which is the surface charge quantity when the entire surface is completely covered by a monolayer of H atoms. Equation (3.14) becomes... 

Synthesis of CNF-Si core-shell nanostructures (a) CNFs are coated with a-Si using CVD of SiH4 to form (b) CNF-Si coreshell structures. SEM images of (c) CNFs and (d) a-Si coated CNFs. (e) Galvanostatic cycling performance of CNF-Si coreshell nanostructures. Reproduced with permission from Ref. 112. Copyright 2009, American Chemical Society. 

Second, in the early 1950s, Hogan and Bank at Phillips Petroleum Company, discovered (3,4) that ethylene could be catalyticaHy polymerized into a sohd plastic under more moderate conditions at a pressure of 3—4 MPa (435—580 psi) and temperature of 70—100°C, with a catalyst containing chromium oxide supported on siUca (Phillips catalysts). PE resins prepared with these catalysts are linear, highly crystalline polymers of a much higher density of 0.960—0.970 g/cnr (as opposed to 0.920—0.930 g/cnf for LDPE). These resins, or HDPE, are currentiy produced on a large scale, (see Olefin polymers, HIGH DENSITY POLYETHYLENE). 

Fig. 3. Evolution of catalytic performances with time for CNF catalysts reaction temperature, 550 C W/F=37.9 (mol CjHsl/g h...

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