caa a22 4500 606195610 CHVBK 20210128100920.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s10934-015-9987-8 doi (NATIONALLICENCE)springer-10.1007/s10934-015-9987-8 Tuning the structure of alumina [Elektronische Daten] [Lijun Xue, Jie Wei, Di Zhang, Xiang Li, Xinmei Liu] Using aluminum nitrate as aluminum source, mesoporous alumina was respectively synthesized via cation-anion double hydrolysis method, sol-gel method and hydrothermal method. The pore structure, acidic property and microstructure etc. can be controlled by different methods and synthesis conditions. Different formation mechanisms induce different average crystallite sizes. The samples obtained from sol-gel and cation-anion double hydrolysis method have mono-modal mesopores with pore size in the range of 3.5-20.6nm, while samples derived from hydrothermal method show bimodal mesoporous structure. There are more Lewis acid sites on the surface of the samples synthesized by sol-gel method. Nanorod morphology was observed in all the samples. Of note is that samples prepared with hydrothermal method show some irregular nanoparticles among the rods and samples synthesized by other methods bear pure nanorod structure. Moreover, there is more six-coordination aluminum (AlO6) in the framework of alumina prepared with hydrothermal method compared to that of samples synthesized by other methods. Springer Science+Business Media New York, 2015 Mesoporous alumina nationallicence Mono-pore nationallicence Bimodal mesopores nationallicence Nanorod nationallicence Xue Lijun State Key Laboratory for Heavy Oil Processing and Key Laboratory of CNPC, China University of Petroleum, 266580, Qingdao, China aut Wei Jie State Key Laboratory for Heavy Oil Processing and Key Laboratory of CNPC, China University of Petroleum, 266580, Qingdao, China aut Zhang Di State Key Laboratory for Heavy Oil Processing and Key Laboratory of CNPC, China University of Petroleum, 266580, Qingdao, China aut Li Xiang School of Mechanical, Materials and Mechatronic Engineering, University of Wollongong, 2522, Wollongong, NSW, Australia aut Liu Xinmei State Key Laboratory for Heavy Oil Processing and Key Laboratory of CNPC, China University of Petroleum, 266580, Qingdao, China aut Journal of Porous Materials Springer US; http://www.springer-ny.com 22/4(2015-08-01), 1119-1126 1380-2224 22:4<1119 2015 22 10934 https://doi.org/10.1007/s10934-015-9987-8 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10934-015-9987-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Xue Lijun State Key Laboratory for Heavy Oil Processing and Key Laboratory of CNPC, China University of Petroleum, 266580, Qingdao, China aut NATIONALLICENCE 700 1- Wei Jie State Key Laboratory for Heavy Oil Processing and Key Laboratory of CNPC, China University of Petroleum, 266580, Qingdao, China aut NATIONALLICENCE 700 1- Zhang Di State Key Laboratory for Heavy Oil Processing and Key Laboratory of CNPC, China University of Petroleum, 266580, Qingdao, China aut NATIONALLICENCE 700 1- Li Xiang School of Mechanical, Materials and Mechatronic Engineering, University of Wollongong, 2522, Wollongong, NSW, Australia aut NATIONALLICENCE 700 1- Liu Xinmei State Key Laboratory for Heavy Oil Processing and Key Laboratory of CNPC, China University of Petroleum, 266580, Qingdao, China aut NATIONALLICENCE 773 0- Journal of Porous Materials Springer US; http://www.springer-ny.com 22/4(2015-08-01), 1119-1126 1380-2224 22:4<1119 2015 22 10934