Abstract
SAPO-11 zeolites with different amount of silicon were synthesized to control the acidic sites of Pt/SAPO-11 catalysts. The structure, acidity and hydroisomerization performance of the SAPO-11 zeolites were systematically investigated. The results showed that with increase of silicon amount, the relative crystallinity of SAPO-11 apparently decreased and dominant crystal faces were different. BET surface area and total pore volume of the samples can change by difference of phase crystal structure. Amount of framework silicon controls acidic property of the SAPO-11. The more incorporation of silicon in the framework resulted in more medium acidic sites on the samples. The different acidic property of the samples was ascribed to different coordination mode of silicon. There are SM2 and SM3 substitution in the frameworks of the SAPO-11 zeolites. On catalysts of Pt/SAPO-11, more platinum existed in the pores. Platinum dispersion and reduction property were almost duplication for all the catalysts. The conversion of model compound and isomerization selectivity strongly depended on the acidic property of the catalysts. The results demonstrated that the optimum catalysts for hydrocarbon isomerization should remain the balance between metal sites and acidic sites.
Graphical Abstract
Similar content being viewed by others
References
Han L, Liu Y, Subhan F, Liu X, Yan Z (2014) Microporous Mesoporous Mater 194:90
Li Q, Creaser D, Sterte J (1999) Microporous Mesoporous Mater 31:141
Jentys A, Lercher J (2001) Stud Surf Sci Catal 137:345
Campelo J, Lafont F, Marinas J (1995) J Catal 156:11
Park K-C, Ihm S-K (2000) Appl Catal A 203:201
Liu Y, Liu C, Liu C, Tian Z, Lin L (2004) Energy Fuels 18:1266
Benitez V, Yori J, Grau J, Pieck C, Vera C (2006) Energy Fuels 20:422
Walendziewski J, Pniak B (2003) Appl Catal A 250:39
Sinha A, Sivasanker S (1999) Catal Today 49:293
Meriaudeau P, Tuan VA, Lefebvre F, Nghiem VT, Naccache C (1998) Microporous Mesoporous Mater 22:435
Liu P, Ren J, Sun Y (2008) Catal Commun 9:1804
Claude MC, Martens JA (2000) J Catal 190:39
Höchtl M, Jentys A, Vinek H (2000) J Catal 190:419
Flanigen EM, Patton RL, Wilson ST (1988) Stud Surf Sci Catal 37:13
Mertens M, Martens JA, Grobet PJ, Jacobs PA (1990) In: Barthomeuf D, Derouane EG, Hölderich W (eds) Guidelines for mastering the properties of molecular sieves, vol 221. Springer, US
Sinha AK, Sivasanker S, Ratnasamy P (1998) Ind Eng Chem Res 37:2208
Blackwell C, Patton R (1988) J Phys Chem 92:3965
Barrett PA, Jones RH, Thomas JM, Sankar G, Shannon IJ, Catlow CRA (1996) Chem Commun 17:2001
Ping L, Jie R, Yuhan S (2008) Chinese J Catal 29(4):379
Sugimoto M, Katsuno H, Takatsu K, Kawata N (1987) Zeolites 7:503
Guo L, Fan Y, Bao X, Shi G, Liu H (2013) J Catal 301:162
Schmidt I, Madsen C, Jacobsen CJ (2000) Inorg Chem 39:2279
Lin S, Li J, Sharma RP, Yu J, Xu R (2010) Top Catal 53:1304
Zhang S, Chen S-L, Dong P, Jing L-J, Jiang K (2006) Chin J Catal 27:868
Guo L, Bao X, Fan Y, Shi G, Liu H, Bai D (2012) J Catal 294:161
Yamamura M, Chaki K, Wakatsuki T, Okado H, Fujimoto K (1994) Zeolites 14:643
Xu W, Dong J, Li J, Wu F (1990) J Chem Soc, Chem Commun 10:755
Song C-M, Feng Y, Ma L-L (2012) Microporous Mesoporous Mater 147:205
Kabe T, Qian W, Hirai Y, Li L, Ishihara A (2000) J Catal 90:191
Zhang S, Chen S-L, Dong P, Yuan G, Xu K (2007) Appl Catal A 332:46
Fan Y, Lei D, Shi G, Bao X (2006) Catal Today 114:388
Weyda H, Lechert H (1989) Stud Surf Sci Catal 49:169
Gregg SJ, Sing KSW, Salzberg H (1967) J Electrochem Soc 114:279C
Chen N, Gong S, Shirai H, Watanabe T, Qian EW (2013) Appl Catal A466:105
Gong S, Chen N, Nakayama S, Qian EW (2013) J Mol Catal A Chem 370:14
Gong S, Shinozaki A, Qian EW (2012) Ind Eng Chem Res 51:13953
Ren X-T, Li N, Cao J-Q, Wang Z-Y, Liu S-Y, Xiang S-H (2006) Appl Catal A 298:144
Martens JA, Grobet PJ, Jacobs PA (1990) J Catal 126:299
Blasco T, Chica A, Corma A, Murphy W, Agúndez-Rodríguez J, Pérez-Pariente J (2006) J Catal 242:153
Komatsu T, Ikenaga H (2006) J Catal 241:426
Yang X, Ma H, Xu Z, Xu Y, Tian Z, Lin L (2007) Catal Commun 8:1232
Yuvaraj S, Chang T-H, Yeh C-T (2004) J Catal 221:466
Zhong X, Zhu J, Liu J (2005) J Catal 236:9
Corma A, Chica A, Guil J, Llopis F, Mabilon G, Perdigón-Melón J, Valencia S (2000) J Catal 189:382
Lee E, Yun S, Park Y-K, Jeong S-Y, Han J, Jeon J-K (2014) J Ind Eng Chem 20:775
Acknowledgments
This work was supported by the “Innovation Fund of China National Petroleum Corporation” (Grant No. 2012D-5006-0402).
Author information
Authors and Affiliations
Corresponding author
Electronic Supplementary Material
Below is the link to the electronic supplementary material.
Rights and permissions
About this article
Cite this article
Cui, X., Liu, Y. & Liu, X. Controlling Acidic Sites to Improve Hydroisomerization Performance of Pt/SAPO-11 Catalysts. Catal Lett 145, 1464–1473 (2015). https://doi.org/10.1007/s10562-015-1554-z
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10562-015-1554-z