磷钨酸季铵盐催化氧化汽油深度脱硫.pdf

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1、第38卷第4期燃料化学学报Vo1．38NO．42010年8月JournalofFuelChemistryandTechnologyAug．2010文章编号：0253—2409(2010)04-0439-06磷钨酸季铵盐催化氧化汽油深度脱硫宋华，李国忠，李正光(1．东北石油大学化学化工学院，黑龙江大庆163318；2．东北石油大学化学化工学院石油与天然气化工省重点实验室，黑龙江大庆163318)摘要：以十六烷基三甲基溴化铵和磷钨酸为原料制备了磷钨酸季铵盐催化剂，并对催化剂进行了红外光谱和SEM表征。研究了磷钨酸季铵盐为催化剂，双氧水为氧化剂，催化氧

2、化法生产低硫汽油技术。考察了萃取剂以及氧化条件和萃取条件对脱硫效果的影响。结果表明，在汽油10mL，双氧水0．01mL，催化剂0．0016g，氧化温度30℃，氧化时间60min的条件下，采用复合溶剂LJ一1进行萃取，萃取温度20℃，静置时间15min，剂油比为1时，直溜汽油中的硫含量由179．3mg／L降至10．8mg／L，脱硫率达94．O％。氧化萃取时的脱硫率比未经氧化直接萃取时的脱硫率高45．6％，氧化脱硫效果显著。关键词：双氧水；磷钨酸十六烷基三甲基铵；氧化脱硫；汽油中图分类号：TQ028文献标识码：ADeepdesulphurizatiO

3、nofgasolinebycatalyticoxidationusingquaternaryammoniumphOsphotungstateascatalystSONGHua，LIGuo—zhong，LIZheng—guang(1．CollegeofChemistry&ChemicalEngineering，NortheastPetroleumUniversity，Daqing163318，China；2．ProvincialKeyLaboratoryofOil&GasChemicalTechnology。CollegeofChemistry&C

4、hemicalEngineering，NortheastPetroleumUniversity，Daqing163318，China)Abstract：Catalyticoxidationisanimportantmeansfordeepdesulfurizationofoilproducts．Inordertomeetmorestringentspecificationsofsulfurcontentsinoilproducts，studiesondesulfurizationmethodswithmoreselectiveandmoreact

5、ivecatalyticoxidationhavebecomeahotsubject．Aquaternaryammoniumph0sph0tungstatewaspreparedbyhexadecyltrimethylammoniumbromideandphosph0tungstate．Thepreparedcatalystwascharacterizedby王一IRandSEM．Themethodofproducinglowsulfurgasolinewasproposedusinghydrogenperoxideasoxidantandthe

6、abovecatalyst．Theeffectsoftheextraetants，oxidationandextractionconditionsondesulphurizati0nwereexamined．Undertheconditionsofgasoline10mL，hydrogenperoxide0．叭mL，catalyst0．0016g，oxidationreactionwasperformedat30℃with60min．UsingthemultiplexsolventLJ一1astheextractantandthesolvent／

7、oilratioof1，thesulfurcontentofgasolineisreducedfrom179．3mg／Lto10．8mg／Lat20oCwith15min．Thedesulphurizati0nratioreachesto94．O％，whichishigherthanthatofgasolineextracteddirectlywithoutoxidationby45．6％．Thecatalystishighselectiveandlowindosage，whichwillbepotentialingasolinedesulphu

8、rizati0n．Theoxidizeddesulphurizati0neffectisremarkable．Keywords：hydr