A Novel Reaction-Controlled Foam-Type Polyoxometalate Catalyst for Deep Oxidative Desulfurization of Fuels

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• 作者：Wenshuai Zhu ; Peiwen Wu ; Yanhong Chao ; Huaming Li ; Fang Zou ; Suhang Xun ; Fengxia Zhu ; Zhen Zhao
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2013
• 出版时间：December 11, 2013
• 年：2013
• 卷：52
• 期：49
• 页码：17399-17406
• 全文大小：414K
• 年卷期：v.52,no.49(December 11, 2013)
• ISSN：1520-5045

文摘

A novel reaction-controlled foam-type catalyst has been designed by pairing 1-hexadecyl-3-methyl-imidazolium cation with peroxomolybdate anion. This catalyst switched from the powder to the foam-type active species, exhibiting high catalytic activity in the oxidative desulfurization process. After the reaction was finished, the foam became brittle and returned to powder form, which could be easily separated and reused. Reasons for this change were detailed by experiments. The removal of dibenzothiophene (DBT) could reach 98.4% under the optimal conditions of n(DBT)/n(catalyst)/n(H₂O₂) = 30:1:180, at 50 掳C for 1 h. The catalyst could be recycled six times, and the sulfur removal still remained to be about 93.9%.