Addition/Correction pubs.acs.org/JACS
Cite This: J. Am. Chem. Soc. XXXX, XXX, XXX−XXX
Correction to “Cation Exchange Reactions in Layered Double Hydroxides Intercalated with Sulfate and Alkaline Cations (A(H2O)6)[M2+6Al3(OH)18(SO4)2]·6H2O (M2+ = Mn, Mg, Zn; A+ = Li, Na, K)” Anne Raquel Sotiles, Loana Mara Baika, Marco Tadeu Grassi, and Fernando Wypych*
J. Am. Chem. Soc. Downloaded from pubs.acs.org by 91.216.3.11 on 05/07/19. For personal use only.
J. Am. Chem. Soc. 2019, 141, pp 531−540. DOI:10.1021/jacs.8b11389. Page 531. The units for the headings of Table 1, columns 2, 3, and 4, should be “(mmol)”, not “(mol/L)”. Pages 536−537. The headings for the second and third sections of Table 4, column 6, should be not “Mn/Al” but “Zn/ Al” and “Mg/Al”, respectively. In the last row of the second and third sections of that table, column 5, the combined alkaline metals should be “K+Li”, not “Na+Li”, in both cases. The complete, corrected versions of both tables are given below. Table 1. Amounts of Chemicals Used and pH in Each Synthesisa compound
M+2SO4 (mmol)
Al2(SO4)3 (mmol)
A2SO4 (mmol)
M2+:M3+ (M2+:A)
initial pH
final pH
shig. Li shig. Na shig. K natro. Li natro. Na natro. K mot. Li mot. Na mot. K
26.506 26.151 25.796 25.108 24.795 24.447 31.605 31.118 30.591
6.630 6.535 6.439 6.281 6.186 6.106 7.899 7.772 7.645
2.183 2.182 2.123 2.092 2.042 2.008 2.638 2.605 2.525
2.00 (6.07) 2.00(5.99) 2.00(6.17) 2.00(6.00) 2.00(6.07) 2.00(6.09) 2.00(5.99) 2.00(5.97) 2.00(6.06)
3.47 3.50 3.39 3.40 3.55 3.54 3.37 3.53 3.39
8.98 9.01 9.00 9.55 9.48 9.55 8.98 9.01 9.00
a
Shig. = shigaite (M2+ = Mn); natro. = Natroglaucocerinite (M2+ = Zn); mot. = motukoreaite (M2+ = Mg); phases of Li, Na, and K (A+ = Li, Na, and K, respectively).
© XXXX American Chemical Society
A
DOI: 10.1021/jacs.9b04468 J. Am. Chem. Soc. XXXX, XXX, XXX−XXX
Journal of the American Chemical Society
Addition/Correction
Table 4. Compositions of the Samples Obtained by ICP/EOSa sample
Mn (x)
Al (y)
SO4 (z)
alkaline metal (w)
Mn/Al
shig. Li shig. Li/Na shig. Li/K shig. Na shig. Na/K shig. Na/Li shig. K shig. K/Na shig. K/Li
0.661 0.664 0.663 0.664 0.663 0.665 0.665 0.663 0.666
0.339 0.336 0.337 0.336 0.337 0.335 0.335 0.337 0.334
0.220 0.223 0.221 0.218 0.220 0.240 0.218 0.229 0.223
Li = 0.100 Li = 0.009; Na = 0.100; Li+Na = 0.109 Li = 0.008; K = 0.097; Li+K = 0.105 Na = 0.100 Na = 0.001; K = 0.102; Na+K = 0.103 Na = 0.002; Li = 0.142; Na+Li = 0.144 K = 0.101 K = 0.001; Na = 0.120; Na+K = 0.121 K = 0.001; Li = 0.110; K+Li = 0.111
1.95 1.98 1.97 1.98 1.97 1.99 1.98 1.97 1.99
sample
Zn (x)
Al (y)
SO4 (z)
alkaline metal (w)
Zn/Al
natro. Li natro. Li/Na natro. Li/K natro. Na natro. Na/K natro. Na/Li natro. K natro. K/Na natro. K/Li
0.662 0.667 0.666 0.666 0.664 0.666 0.667 0.664 0.664
0.338 0.333 0.334 0.334 0.337 0.334 0.333 0.336 0.336
0.220 0.218 0.220 0.217 0.209 0.240 0.217 0.223 0.233
Li = 0.102 Li = 0.024; Na = 0.079; Li+Na = 0.103 Li = 0.023 ; K = 0.082 ; Li+K = 0.105 Na = 0.100 Na = 0.016; K = 0.063; Na+K = 0.079 Na = 0.018; Li = 0.127; Na+Li = 0.145 K = 0.100 K = 0.002 Na = 0.107; Na+K = 0.109 K = 0.014; Li = 0.115; K+Li = 0.129
1.96 2.00 1.99 1.99 1.97 1.99 2.00 1.98 1.98
sample
Mg (x)
Al (y)
SO4 (z)
alkaline metal (w)
Mg/Al
mot. Li mot. Li/Na mot. Li/K mot. Na mot. Na/K mot. Na/Li mot. K mot. K/Na mot. K/Li
0.666 0.667 0.666 0.666 0.662 0.665 0.666 0.664 0.665
0.334 0.333 0.334 0.334 0.338 0.335 0.334 0.336 0.335
0.217 0.220 0.218 0.217 0.212 0.226 0.218 0.229 0.219
Li = 0.099 Li = 0.011 ; Na = 0.096; Li+Na = 0.107 Li = 0.014 ; K = 0.087 ; Li+K = 0.101 Na = 0.100 Na = 0.000; K = 0.085; Na+K = 0.085 Na = 0.019; Li = 0.094; Na+Li = 0.113 K = 0.101 K = 0.002; Na = 0.119; Na+K = 0.121 K = 0.003 ; Li = 0.100; K+Li = 0.103
1.99 2.00 1.99 1.99 1.96 1.99 1.99 1.98 1.99
ex. (%) 92 92 99 99 99 99 ex. (%) 77 78 80 88 98 89 ex. (%) 88 86 96 83 98 97
a
Shig. = shigaite; natro. = natroglaucocerinite; mot. = motukoreaite. x, y, z, w = according to the LDH ideal formula, M2+xAly(OH)2(SO4)zAw; A = Alkaline metal (Li, Na, or K); ex. (%) = percentage of exchange.
B
DOI: 10.1021/jacs.9b04468 J. Am. Chem. Soc. XXXX, XXX, XXX−XXX
