6106 The Journal of Physical Chemistry, Vol. 96, No. 14, 1992
Additions and Corrections
ADDITIONS AND CORRECTIONS 199 1, Volume 95
Leon F.&p,* Stevea B.MOOM,.ndMing-Taun Leu: Surface Reaction and Pore Diffusion in Flow-Tube Reactors. Page 5499. Because of an error in the computer program used to calculate the root of eq 13, the last three columns of Tables I1 and I11 are incorrect. The corrected tables are given below. TABLE II: Representative Correftiom for IaterrctiOe of Flow Dynamics, Diffusion, .nd Surface Reaction" k,(obs), s-I klg,bs-I y; Qd ?e k,,J s-I 1.oo 3.00 10.0 30.0 100 300 600 800 1000 1200 1300 1350 1360 1365
1.oo 3.01 1.01 (1) 3.08 (1) 1.09 (2) 3.92 (2) 1.07 (3) 1.87 (3) 3.34 (3) 7.07 (3) 1.26 (4) 1.96 (4) 2.20 (4) 2.34 (4)
8.52 (-5) 2.56 (-4) 8.58 (-4) 2.62 (-3) 9.23 (-3) 0.0328 0.0874 0.147 0.249 0.462 0.699 0.91 1 0.967 0.998
0.154 0.463 1.55 4.74 1.68 (1) 6.03 (1) 1.65 (2) 2.88 (2) 5.14 (2) 1.09 (3) 1.94 (3) 3.02 (3) 3.39 (3) 3.60 (3)
0.998 0.994 0.98 1 0.944 0.809 0.454 0.194 0.121 0.0772 0.0450 0.0306 0.0232 0.02 16 0.0208
0.0362 0.109 0.371 1.18 4.82 2.99 (1) 1.74 (2) 4.41 (2) 1.09 (3) 3.21 (3) 6.93 (3) 1.21 (4) 1.40 (4) 1.50 (4)
rf 3.08 (-6) 9.30 (-6) 3.16 (-5) 1.00 (-4) 4.10 (4) 2.54 (-3) 0.0147 0.0368 0.0888 0.240 0.456 0.680 0.745 0.781
"Calculated by using the parameters given in Table I under the following conditions: ro = 0.88 cm, p = 0.4 Torr, u = 1000 cm/s, DE= 425 cm2/s, T = 196 K, with CIONOz (MW = 97 g/mol) as reactive species. Numbers in parentheses indicate powers of 10. bFrom eq 3. cFrom eq 24 using kIE. dFrom left-hand side of eq 13. 'Obtained by finding root of eq 13. 'From eq 11. gFrom eq 24 using k,.
TABLE HI: Effect of HNO,-H,O I c e Thickness on CION02 Loss Rate thickness, pm k,(obs), s-l kip: s-l 13.0 17.3 29.0 59.1 72.8 91.2b 108 116
54.2 70.8 176 215 260 21 1 257 227
55.8 73.5 194 242 3 00 236 296 257
Td
k,,C s-I
0.985 0.972 0.872 0.683 0.550 0.550 0.412 0.435
9.93 10.4 19.2 15.5 19.4 12.4 17.3 13.4 av 14.7 f 3.7
10376 0.845 0.885 1.63 1.32 1.65 1.05 1.48 1.14 av 1.25 f 0.32
"Composition was 45.5 f 0.7 wt % H N 0 3 unless otherwise indicated. b37.6 wt % HN03. CCorrected for external diffusion by using eq 3. dObtained from eq 13 by using the sample thicknesses given in column one with r, = 0.88 cm and the HN03-H20 ice parameters given in Table I. e From eq 11. 'From eq 24.
Individual values are changed by less than 25% and the averages by less than 10%. The corrections do not affect the theoretical analysis nor the conclusions of the paper.
