Zhu et al.
Selective Chlorination of Toluene to p-Chlorotoluene Catalyzed by Nanosized Zeolite K-L Catalysts
4. A. Hu, C. Lu, H. Wang, and B. Li, Catal. Commun. 8, 1279 (2007).
K-L catalyst than o-chlorotoluene and m-chlorotoluene,
giving high p-chlorotoluene selectivity. On the other
hand, well crystallized zeolite K-L catalysts with regu-
lar pore structure favored the diffusion of thin and linear
p-chlorotoluene. The monochlorotoluene can be further
chlorinated to dichlorotoluene at high reaction tempera-
ture for a long reaction time. It is worth of noting that
only trace amount of benzyl chloride was formed under
our experimental conditions. And trace amount of benzyl
chloride was produced as a side-chain product via the free-
radical reaction.
5
6
7
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(2000).
(
2
8. E. P. Di Bella, U.S. Patent 4031144 (1977).
. H. C. Lin, US Patent 4069263 (1978).
9
1
1
1
0. H. C. Lin, US Patent 4069264 (1978).
1. Y. Higuchi, US Patent 4794201 (1988).
2. H. Srinivasan and P. Muthaiahpillai, J. Nanosci. Nanotechnol.
3, 2493 (2014).
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7
, 5120 (2014).
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4
. CONCLUSIONS
4
When zeolite K-L catalysts were synthesized in the reac-
tion solution with different SiO /Al O ratios of 21:1–31:1
at 150 C for 48–120 h, the crystallinities of zeolite
K-L catalysts increased with increasing the SiO /Al O
1
1
2
2
3
1
ꢀ
6. R. Selvin, L. S. Roselin, and S. A. Khayyat, J. Nanosci. Nanotech-
nol. 6, 4415 (2013).
2
2
3
ratio and prolonging the autoclaving time. The zeolite
K-L catalysts synthesized with the SiO /Al O ratios of
17. L. Delaude and P. Laszlo, J. Org. Chem. 55, 5260 (1990).
18. B. W. Satterley, M. C. Hausladen, and C. R. F. Lund, Zeolites 19, 434
2
2
3
(1997).
2
6:1 and 31:1 had well-ordered pore structures. The
19. M. C. Hausladen, R. C. Cyganovich, H. Y. Huang, and C. R. F.
Lund, Appl. Catal. A: Gen. 219, 1 (2001).
selectivity of p-chlorotoluene was much higher than
those of o-chlorotoluene and m-chlorotoluene over well-
crystallized and nanosized zeolite K-L catalysts. The shape
selective catalysis of zeolite K-L catalysts played an
important role in the chlorination reaction. Considering
the low catalyst consumption, high catalytic activity, and
20. M. C. Hausladen, B. W. Satterley, M. J. Burger, and C. R. F. Lund,
Appl. Catal. A: Gen. 166, 55 (1998).
21. W. Insuwan and K. Rangsriwatananon, Eng. J. 16, 1 (2012).
2
2. A. Z. Ruiz, D. Bruhwiler, L.-Q. Dieu, and G. Calzaferri, Controlling
Size and Morphology of Zeolite L, edited by U. Schubert, Materials
Syntheses, Springer-Verlag/Wien, New York (2008), pp. 9–19.
high selectivity of p-chloroto Dl u ee lni ve e, rz ee do l ibt ey KI n- gL e ins t aa pt oo :t eNn a- nyang Technological University
23. Q. Huo, T. Dou, Z. Zhao, and H. Pan, Appl. Catal. A: Gen. 381, 101
tial catalyst for the selective chlo Ir Pi n:a 7t i 9o .n1 1o 0f . t1o 9l u. 1e 7n e3 wO int h: Sat, 11 Jun 2016 08:08:19
(2010).
Copyright: American Scientific Publishers
gaseous chlorine to p-chlorotoluene.
24. L. Gigli, R. Arletti, S. Quartieri, F. Di Renzo, and G. Vezzalini,
Micropor. Mesopor. Mat. 177, 8 (2013).
2
2
2
2
5. T. Ban, M. Takamura, M. Morikawa, and Y. Ohya, Mater. Chem.
Acknowledgments: The work was financially sup-
ported by the funds from The Ministry of Science
and Technology of the people’s Republic of China
Phys. 137, 1067 (2013).
6. J. R. Park, B. K. Kwak, D. S. Park, T. Y. Kim, Y. S. Yun, and J. Yi,
Korean J. Chem. Eng. 29, 1695 (2012).
7. P. Concepcion, P. Botella, and J. M. Lopez Nieto, Appl. Catal. A:
Gen. 278, 45 (2004)ꢀ
8. G. Piazzesi, O. Krocher, M. Elsener, and A. Wokaun, Appl. Catal.
B: Environ. 65, 55 (2006).
(
20110FR50080) and Jiangsu Zhong Teng Chemical Co.,
Ltd.
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3
1
Received: 18 May 2014. Accepted: 14 June 2014.
J. Nanosci. Nanotechnol. 15, 6150–6159, 2015
6159