Адсорбция и определение характеристик поверхности...
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. .
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., . , , . 1984 Rouquerol F., Rouquerol J., Sing K. Adsorption by powders and porous solids. 1999 . . 1948
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m 1 2
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S ms
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V0 .S C0
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q q = (0) + 0q
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qm - b A() + S() AS()
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4 90(I. Langmuir, 1918)qm = 110 3
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(p/q) vs. p(q/p) vs. q/p(1 - ) vs.
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R2=0.9991(p/q) vs. p(q/p) vs. q /p(1 - ) vs.
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1. : 3 : + : 1 ; Rln{/(1- )} D.H. Everett, Trans. Faraday Soc. 1950, 46, 943
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2. ? -Al2O3.. , .. , , 1989, 30, 69
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, i , bi i i
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- N-- 1 L-2 D-
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i bi+1 bi = db = const db dqm = Qi+1 - Qi, Qi b (bmin; bi).
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: - bLF
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: -I. Langmuir (1918) 4 90 -
-qm110119b0.1150.093
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3. ?Carrot et al., Carbon, 1987, 25, 59 77
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--
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Bp/p0q qB qm
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qm qm - () -
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J. Feder, J. Theor. Biol., 1980, 87, 237
= 0.54
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qm (q*) - - X. Jin et al. J. Phys. Chem., 1993, 97, 4256 = 0.33
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S = qmNANA - F. Rouquerol et al. Adsorption by powders and porous solids. 1999
(2)() . CO27777771952930.13 0.200.10 0.190.13 0.200.14 0.220.25 0.510.1620.1380.1410.1630.3070.1620.1380.1410.2100.430
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0.70 0.59
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/0 0.05 0.30,
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, , , , N2 SiO2 Al2O3 77 C = 200-300 SiO2 Al2O3
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2D
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< 2 2 50 > 50 -
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F. Rouquerol et al. Adsorption by powders and porous solids. 1999N2, 77K ( 0.4 S ()
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t- (Lippens & de Boer, 1965): (t) , t pr S
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t- t- (t p/po) t q = f(t) . . slopet
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t- 77 , (de Boer et al. J. Coll. Interface Sci. 1966, 21, 405)
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s- (Sing, 1968) (q/qm) s =(q/q0.4), q0.4 q / = 0.4
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F. Rouquerol et al. (1999)
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/0sq 3 stp/ s- Bhambhani et al. J. Coll. Interface Sci. 1972, 38, 109
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s- P.J.M. Carrot et al. Carbon 1987, 25, 59 (77) S- XR602
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: - - , 20%
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(1914) (< 2 ) , , . .. / , p . p = po ( )
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-DG = A = RT ln(p0/p) W = q/, W0
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-E0 ( )
, ( ) -( ) lnW ln2(p0/p)
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N2 77P.J.M. Carrot et al. Carbon 1987, 25, 59AX21AX21JF517JF517CARBOSIEVECARBOSIEVEJF005JF005W, 3 stplnWp/p0ln2(p/p0)p/p0
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N2, 77KN2, 77K N2 77P.J.M. Carrot et al. Carbon 1987, 25, 59
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P.J.M. Carrott et al., Carbon, 2000, 38, 465 298 p/p0 0.02 0.15
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() (d) : 1 < d < 3 : 3 < d < 5 p . p
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d < 1.5 1.5 < d < 2.0
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= 0.31 F. Rouquerol et al. Adsorption by powders and porous solids. 1999
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C.E. Webster et al. J. Phys. Chem. B 1999, 103, 1242
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C.E. Webster et al. J. Phys. Chem. B 1999, 103, 1242 MIN-1 MIN-1 MIN-2
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( )/( ) P.J.M. Carrott, Colloids and Surfaces, 1991, 58, 385(100% )
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F. Rouquerol et al. Adsorption by powders and porous solids. 1999
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q0(mic)q
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q0(mic)q
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q0(mic)q
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(1975)- (1977)
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- .
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, dW/dd, 3//d, H. F. Stoeckli, Carbon, 1990,28, 1.
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+ q = qmic + Sexttt ,
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+ tq W0/Mr = q0(mic)tg = Sext Sext p/p0 = 0.40 0.75
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+ (: N2 )Bhambhani et al. J. Coll. Interface Sci. 1972, 38, 109 s-
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vm hw - (Bansal RC, Donnet JB, Stoeckli F. Active carbon. 1988. pp. 119162)
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E0( -1) = 10.8/d () + 11.4Smi (2 -1)= 2000W0 (3 -1)/d () -iH = k1Smi + k2W0 + k3Sext-iH = c1Smi + c2(W0 c3Smi) + c4Sext-iH ( -1)= 0.136Smi + 141(W0 4.110-4Smi) + 0.114Sext
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Pure & Appl. Chem., 1985, 57, 603
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- vl rK ( )
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rp = rK + t L = rK + 2t
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, (BJH: Barrett, Joyner, Halenda) ,
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, ri, (p/p0)i. vp(ri)
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