Abstract

In search for the improved catalytic efficacy, considerable attention has been focused on mixed metal oxides in the last decade. The present study reports catalytic activity of mesoporous mixed metal oxide, Zr₆Nb₂O₁₇ for the first time. In this study, the mesoporous Zr₆Nb₂O₁₇ has been synthesized through a soft template based wet chemical approach. The mesoporous Zr₆Nb₂O₁₇ is realized after the removal of surfactant through calcination at 500°C, and preserves its mesoporosity after crystallization by heat treatment at 550°C. The synthesized oxide exhibits surface area as high as 221 m²/g and pore size of 3.3 nm with narrow pore size distribution. The synthesized mesoporous Zr₆Nb₂O₁₇ shows significant catalytic activity for the bromination of phenol red. Careful structural characterizations and catalytic activity studies of the mesoporous Zr₆Nb₂O₁₇ are documented in this report.

中文翻译：

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介孔混合锆-铌氧化物（Zr 6 Nb 2 O 17）：苯酚红溴化反应的高效催化剂

摘要

为了寻求改进的催化效力，在过去十年中，相当多的注意力集中在混合金属氧化物上。本研究首次报道了介孔混合金属氧化物Zr ₆ Nb ₂ O _17的催化活性。在这项研究中，已经通过基于软模板的湿化学方法合成了介孔Zr ₆ Nb ₂ O ₁₇。介孔Zr ₆ Nb ₂ O ₁₇在通过在500℃下煅烧除去表面活性剂之后实现，并且在通过在550℃下的热处理结晶后保持其介孔性。合成氧化物的表面积高达221 m ²/ g，孔径为3.3 nm，孔径分布狭窄。合成的介孔Zr ₆ Nb ₂ O ₁₇对酚红的溴化反应显示出显着的催化活性。这份报告中记录了介孔Zr ₆ Nb ₂ O _17的仔细的结构表征和催化活性研究。