caa a22 4500 463253647 CHVBK 20180405153348.0 cr unu---uuuuu 170326e20071001xx s 000 0 eng 10.1007/s10562-007-9138-1 doi (NATIONALLICENCE)springer-10.1007/s10562-007-9138-1 Synthesis, characterization and hydroisomerization catalytic performance of nanosize SAPO-11 molecular sieves [Elektronische Daten] [Shengzhen Zhang, Sheng-Li Chen, Peng Dong, Zhiyong Ji, Junying Zhao, Keqi Xu] A new static hydrothermal method was developed for synthesizing nanosize SAPO-11 molecular sieve.The new method involves aging pretreatment step followed by crystallization process of a precursor gel. The effect of the aging pretreatment on morphology and size of SAPO-11 molecular sieves was investigated. The results of XRD and SEM showed that the aging pretreatment changed the size and morphology of the SAPO-11 dramatically, and the size could be controlled by varying the time for aging. Nanocrystals of SAPO-11 molecular sieves were synthesized by aging the precursor gel at 150°C for 135min and then crystallizing the gel at 190°C for 24h. Compared with the SAPO-11 samples that exhibit the pseudo-spherical aggregates ranging from 3 to 15μm synthesized by conventional method, the SAPO-11 samples synthesized by the new method not only possessed much smaller cubic single crystals of about 400-500nm, but were more uniform in size. Moreover, the SAPO-11 samples synthesized by the new method had larger specific surface area and larger external specific surface area. The results of n−hexadecane hydroisomerization showed that the Pt/SAPO-11 prepared with the new method exhibited higher catalytic activity and better hydroisomerization selectivity than the Pt/SAPO-11 synthesized by conventional hydrothermal method. Springer Science+Business Media, LLC, 2007 aging treatment nationallicence hydroisomerization nationallicence nanocrystals nationallicence n −hexadecane nationallicence SAPO-11 molecular sieves nationallicence static hydrothermal synthesis nationallicence Zhang Shengzhen State Key Laboratory of Heavy Oil Processing, College of Chemistry and Chemical Engineering, China University of Petroleum, 102249, Beijing, P. R. China aut Chen Sheng-Li State Key Laboratory of Heavy Oil Processing, College of Chemistry and Chemical Engineering, China University of Petroleum, 102249, Beijing, P. R. China aut Dong Peng State Key Laboratory of Heavy Oil Processing, College of Chemistry and Chemical Engineering, China University of Petroleum, 102249, Beijing, P. R. China aut Ji Zhiyong State Key Laboratory of Heavy Oil Processing, College of Chemistry and Chemical Engineering, China University of Petroleum, 102249, Beijing, P. R. China aut Zhao Junying State Key Laboratory of Heavy Oil Processing, College of Chemistry and Chemical Engineering, China University of Petroleum, 102249, Beijing, P. R. China aut Xu Keqi State Key Laboratory of Heavy Oil Processing, College of Chemistry and Chemical Engineering, China University of Petroleum, 102249, Beijing, P. R. China aut Catalysis Letters Springer US; http://www.springer-ny.com 118/1-2(2007-10-01), 109-117 1011-372X 118:1-2<109 2007 118 10562 https://doi.org/10.1007/s10562-007-9138-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10562-007-9138-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhang Shengzhen State Key Laboratory of Heavy Oil Processing, College of Chemistry and Chemical Engineering, China University of Petroleum, 102249, Beijing, P. R. China aut NATIONALLICENCE 700 1- Chen Sheng-Li State Key Laboratory of Heavy Oil Processing, College of Chemistry and Chemical Engineering, China University of Petroleum, 102249, Beijing, P. R. China aut NATIONALLICENCE 700 1- Dong Peng State Key Laboratory of Heavy Oil Processing, College of Chemistry and Chemical Engineering, China University of Petroleum, 102249, Beijing, P. R. China aut NATIONALLICENCE 700 1- Ji Zhiyong State Key Laboratory of Heavy Oil Processing, College of Chemistry and Chemical Engineering, China University of Petroleum, 102249, Beijing, P. R. China aut NATIONALLICENCE 700 1- Zhao Junying State Key Laboratory of Heavy Oil Processing, College of Chemistry and Chemical Engineering, China University of Petroleum, 102249, Beijing, P. R. China aut NATIONALLICENCE 700 1- Xu Keqi State Key Laboratory of Heavy Oil Processing, College of Chemistry and Chemical Engineering, China University of Petroleum, 102249, Beijing, P. R. China aut NATIONALLICENCE 773 0- Catalysis Letters Springer US; http://www.springer-ny.com 118/1-2(2007-10-01), 109-117 1011-372X 118:1-2<109 2007 118 10562 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer