疏水性含钒多酸高效催化氧化脱硫  

Highly Efficient Extraction Oxidation Desulfurization Using Hydrophobic Vanadium-containing Polyoxometalate

作　　者：宋宇飞[1] 连丽飞 张利民 陈伟[1] SONG Yufei;LIAN Lifei;ZHANG Limin;CHEN Wei(State Key Laboratory of Chemical Resource Engineering,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]北京化工大学化工资源有效利用国家重点实验室,北京100029

出　　处：《山西大学学报（自然科学版）》2022年第3期783-792,共10页Journal of Shanxi University(Natural Science Edition)

基　　金：国家自然科学基金(21222104,21625101)。

摘　　要：萃取催化氧化脱硫是一种极具潜力的深度脱硫技术,具有反应条件温和、能耗低等优势,受到越来越广泛的关注。开展低成本、高效率和易于规模化制备的催化材料的合成,有助于加快该技术向工业化应用迈进。文章采用简单的离子交换方式,通过精准调控烷基链长度和多酸分子结构组成,成功地筛选出了一类(DDA)_(6)PW_(9)V_(3)O_(4)(DDA+=十二烷基三甲基铵阳离子)催化剂。当以H_(2)O_(2)作为氧化剂、1-辛基-3-甲基咪唑六氟磷酸盐为萃取剂时,(DDA)_(6)PW_(9)V_(3)O_(4)在30℃条件下,25 min内即可实现99.9%以上的脱硫效率。而当温度增加到50℃时,仅需10min即可实现99.9%以上脱硫效果。文章为设计具有潜在工业应用价值的萃取催化氧化脱硫催化剂提供了一种新思路。Extractive catalytic oxidation desulfurization(ECODS) is one of the most promising deep desulfurization technologies,which has the advantages of mild reaction conditions and low energy consumption.Fabrication of low cost,high efficiency and easy scale-up catalytic materials can effectively promote their industrial application.In this paper,by fine-tuning the hydrophobic chains of quaternary ammonium salts and the molecular structures of polyoxometalates(POMs),we successfully discovered a new catalyst of(DDA);PW_(9)V_(3)O_(40)by simple ion-exchange method between K_(6)[PW_(9)V_(3)O_(40)] and DDA.With H_(2)O_(2)as oxidant and 1-octyl-3-methylimidazolium hexafluorophosphates as extraction agent,more than 99.9% deep desulfurization can be achieved in 25 minutes at 30℃.When the temperature increased to 50℃,99.9% desulfurization took only 10 minutes.This work opens a new pathway for developing a potential desulfurization catalyst for application.

关 键 词：表面活性剂 钒杂多酸 萃取催化氧化 脱硫 

分 类 号：O436[机械工程—光学工程]