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氨基酸功能化磷钨酸盐的制备及其催化氧化脱硫性能

, PP. 1394-1399

Keywords: l-丙氨酸,磷钨酸,二苯并噻吩,脱硫

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Abstract:

?以l-丙氨酸和磷钨酸为原料,合成氨基酸功能化磷钨杂多酸盐([ala]3pw),并采用xrd、ft-ir对其结构进行表征.以[ala]3pw为催化剂,过氧化氢作为氧化剂,甲基咪唑四氟硼酸盐([hmim]bf4)为萃取剂氧化萃取一体法脱除模拟油中的二苯并噻吩(dbt).考察了反应温度、催化剂加入量、o/s物质的量比、萃取剂加入量、硫化物类型等因素对脱硫效率的影响.结果表明,在模拟油为10ml、[ala]3pw=0.04g、o和s的物质的量比为6、v([hmim]bf4)/v(oil)=0.6、反应温度50℃、反应时间180min的条件下,dbt的转化率可达到98.2%.催化剂循环使用4次活性没有明显的降低.

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