Metal‐reinforced sulfonic‐acid‐modified zirconia for the removal of trace olefins from aromatics,Journal of the Chinese Chemical Society

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Metal‐reinforced sulfonic‐acid‐modified zirconia for the removal of trace olefins from aromatics
Journal of the Chinese Chemical Society ( IF 1.6 ) Pub Date : 2020-04-20 , DOI: 10.1002/jccs.201900507
Decun Kong ₁ , Qian Peng ₁ , Li Shi ₁ , Xin Wang ₁ , Xuan Meng ₁ , Xiude Hu ₂ , Naiwang Liu ₁

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Metal‐reinforced sulfonic‐acid‐modified zirconia catalysts were successfully prepared and used to remove trace olefins from aromatics in a fixed‐bed reactor. Catalysts were characterized by ICP‐OES, N₂ adsorption–desorption, X‐ray diffraction, thermogravimetric analysis (TGA), and pyridine‐FTIR spectroscopy. Different metals and calcination temperatures had great influence on the catalytic activity. Alumina‐reinforced sulfated zirconia exhibited outstanding catalytic performance, stable regeneration activity, and giant surface area, and are promising in industrial catalysis. TGA showed that the decomposition of methyl could be attributed to Brønsted acid sites, and pyridine‐FTIR spectroscopy proved the weak Brønsted sites on these synthesized metal‐reinforced sulfated zirconia. Also, a relation between the reaction rate and weak Brønsted acid density is proposed.

中文翻译：

金属增强的磺酸改性的氧化锆，用于从芳烃中去除痕量烯烃

已成功制备了金属增强的磺酸改性的氧化锆催化剂，并将其用于在固定床反应器中从芳烃中去除痕量烯烃。ICP-OES表征催化剂，N ₂吸附-解吸，X射线衍射，热重分析（TGA）和吡啶FTIR光谱。不同的金属和煅烧温度对催化活性有很大的影响。氧化铝增强的硫酸氧化锆具有出色的催化性能，稳定的再生活性和巨大的表面积，在工业催化中很有前景。TGA显示甲基的分解可能归因于布朗斯台德酸位点，吡啶-FTIR光谱证明了这些合成的金属增强的硫酸盐氧化锆上的弱布朗斯台德位点。另外，提出了反应速率与弱布朗斯台德酸密度之间的关系。

更新日期：2020-04-20

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