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1971301 
Journal Article 
Preparation, catalytic performance and theoretical study of porous sulfated binary metal oxides shell (SO42-/M1(x)O(y)-M2(x)O(y)) using pollen grain templates 
Wang, PC; Yao, Kai; Zhu, Jie; Liu, X; Lu, TT; Lu, M 
2013 
Yes 
Catalysis Communications
ISSN: 1566-7367 
39 
90-95 
WOS:000321604300020 
Porous micro-sized particles of binary metal oxide (SO42-/M1(x)O(y)-M2(x)O(y)) shell were prepared by template-directed synthesis method employing HCl-treated pollen grains. With 150 m(2)/g high surface area, these solid acids could provide more acid sites and thus obtain better catalytic activity. Using aromatic nitration as the typical reaction, their catalytic performances were evaluated and showed a significant improvement in both conversion and regioselectivity. Then, with chlorobenzene as substrate, theoretical studies were performed to investigate the interaction between transition metals and chlorobenzene. The results showed that the excellent para-selectivity was closely relative to the metal ion in these solid acids. (C) 2013 Elsevier B.V. All rights reserved. 
Aromatic nitration; Pollen temple; Regioselectivity; Metal oxides; Interaction mechanism