The catalytic performance of methylation of naphthalene with methanol over SAPO-11 zeolites synthesized with different Si content

Xiaoxiao Wang; Fang Guo; Xianxian Wei; Zhenmin Liu; Wei Zhang; Shaoqing Guo; Liangfu Zhao

Korean Journal of Chemical Engineering, Vol.33, No.7, 2034-2041, July, 2016

DOI10.1007/s11814-016-0065-y Export Citation

The catalytic performance of methylation of naphthalene with methanol over SAPO-11 zeolites synthesized with different Si content

Xiaoxiao Wang, Fang Guo¹, Xianxian Wei², Zhenmin Liu, Wei Zhang³, Shaoqing Guo^{2, †}, and Liangfu Zhao^{3, †}

School of Chemical and Biological Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, P. R. China
¹College of Chemistry and Chemical Engineering, Jin Zhong University, Yuci 030619, P. R. China
²College of Environment and Safety, Taiyuan University of Science and Technology, Taiyuan 030024, P. R. China
³Chinese Academy of Sciences, Institute of Coal Chemistry, Taiyuan 030001, P. R. China

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A series of SAPO-11 zeolites with different Si contents were prepared by hydrothermally synthesized method. They were characterized by ICP, XRD, SEM, FT-IR, N2 adsorption-desorption, NH3-TPD and 29Si MAS NMR, and evaluated by the methylation of naphthalene with methanol to 2,6-dimethylnaphthalene (2,6-DMN). According to XRD and SEM results, the crystallinity of SAPO-11 sample increased with increase of the Si content until the SiO2/Al2O3 ratio was up to 0.2. However, a reduction in the crystallinity was observed with further increase of the Si content of the synthesis. N2 adsorption-desorption results showed that all the samples possessed micropores and secondary mesopores. SAPO-11 sample with SiO2/Al2O3 ratio of 0.2 exhibited the largest secondary mesopores size distributions. NH3-TPD and 29Si MAS NMR showed that the Si content was incorporated into the framework affecting not only the acid sites but also the acid strength of SAPO-11. SAPO-11 with SiO2/Al2O3 ratio of 0.2 presented the high catalytic performances for the methylation of naphthalene, which was mainly attributed to the amount of secondary mesopores in the SAPO-11 zeolite.

Keywords:SAPO-11;Si Content;Pore Structure;Methylation of Naphthalene

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[Referenced By]

[1] Song CS, Schobert HH, Fuel Process. Technol., 34, 157 (1993)

[2] Tsutsui T, Ijichi K, Inomata T, Setiadi, Kojima T, Sato K, Chem. Eng. Sci., 59(19), 3993 (2004)

[3] Fraenkel D, Cherniavsky M, Ittah B, Levy M, J. Catal., 101, 273 (1986)

[4] Park JN, Wang J, Lee CW, Park SE, Bull. Korean Chem. Soc., 23, 1011 (2002)

[5] Pazzuconi G, Terzoni G, Perego C, Bellussi G, Stud. Surf. Sci. Catal., 135, 4071 (2001)

[6] Wu W, Wu WG, Kikhtyanin OV, Li LF, Toktarev AV, Ayupov AB, Khabibulin JF, Echevsky GV, Huang J, Appl. Catal. A: Gen., 375(2), 279 (2010)

[7] Wen J, Wang GY, Zhang Y, Qiu ZG, Zhao LF, Petrochem. Technol., 39(5), 487 (2010)

[8] Wang XX, Wen J, Zhang W, Zhao LF, Wei W, Petrochem. Technol., 41(11), 1284 (2012)

[9] Lok BM, Messina CA, Patton RL, Gajek RT, Cannon TR, Flanigen EM, Crystalline silicoaluminophosphates, US. 4440871 (1984).

[10] Song CM, Fengf Y, Ma LL, Microporous Mesoporous Mater., 147, 205 (2012)

[11] Roldan R, Sanchez M, Sankar G, Romero-Salguero FJ, Jimenez-Sanchidrian C, Microporous Mesoporous Mater., 99, 288 (2007)

[12] Ren XT, Li N, Cao JQ, Wang ZY, Liu SY, Xiang SH, Appl. Catal. A: Gen., 298, 144 (2006)

[13] Meriaudeau P, Tuan VA, Nghiem VT, Lai SY, Hung LN, Naccache C, J. Catal., 169(1), 55 (1997)

[14] Chen CM, Jehng JM, Catal. Lett., 85(1-2), 73 (2003)

[15] Xiao TC, An LD, Wang HL, J. Mol. Catal., 8, 429 (1994)

[16] Meriaudeau P, Tuan VA, Nghiem VT, Lai SY, Hung LN, Naccache C, J. Catal., 169(1), 55 (1997)

[17] Sastre G, Lewis DW, Catlow CR, J. Phys. Chem. B, 101(27), 5249 (1997)

[18] Lucas N, Bordoloi A, Amrute AP, Kasinathan P, Vinu A, Bohringer W, Fletcher JCQ, Halligudi SB, Appl. Catal. A: Gen., 352(1-2), 74 (2009)

[19] Liu P, Ren J, Sun YH, Chin. J. Catal., 29, 379 (2008)

[20] Sinha AK, Seelan S, Tsubota S, Haruta M, Top. Catal., 29, 95 (2004)

[21] Eswaramoorthi I, Lingappan N, J. Mol. Catal. A-Chem., 218(2), 229 (2004)

[22] Fang YM, Hu HQ, Catal. Commun., 7, 264 (2006)