Preparation, catalytic performance and theoretical study of porous sulfated binary metal oxides shell (SO₄^2 ?/M1_xO_y-M2_xO_y) using pollen grain templates

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• 作者：Peng cheng Wang ; Kai Yao ; Jie Zhu ; Xiang Liu ; Ting ting Lu ; Ming Lu ; ^{luming@mail.njust.edu.cn}
• 关键词：Aromatic nitration ; Pollen temple ; Regioselectivity ; Metal oxides ; Interaction mechanism
• 刊名：Catalysis Communications
• 出版年：2013
• 出版时间：5 September, 2013
• 年：2013
• 卷：39
• 期：Complete
• 页码：90-95
• 全文大小：3197 K

文摘

Porous micro-sized particles of binary metal oxide (SO₄^2 ?/M1_xO_y-M2_xO_y) shell were prepared by template-directed synthesis method employing HCl-treated pollen grains. With 150 m²/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.