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以双氧水为氧化剂,采用蒸馏水做溶剂,研究了催化氧化-萃取法生产超低硫戊烷技术,考察了催化剂、助催化剂以及氧化条件对脱硫效果的影响。在戊烷10mL、双氧水0.5mL、催化剂钨酸0.009g、助催化剂甲醇0.8mL、温度50℃、时间100min条件下反应,在剂油比为2:1的条件下用蒸馏水于15℃萃取反应混合物15min,戊烷中的硫含量由24.4mg/L降至0.5mg/L,脱硫率可达98.0%。
Using hydrogen peroxide as oxidant and distilled water as solvent, the technology of catalytic oxidation-extraction to produce ultra-low-pentane was studied. The effects of catalyst, promoter and oxidation conditions on desulfurization efficiency were investigated. The reaction mixture was extracted with 10 mL of pentane, 0.5 mL of hydrogen peroxide, 0.009 g of tungstic acid catalyst, 0.8 mL of cocatalyst methanol, and a temperature of 50 ° C. for 100 min. The reaction mixture was extracted with distilled water at 15 ° C. with a solvent-oil ratio of 2: 1 15min, pentane sulfur content from 24.4mg / L to 0.5mg / L, desulfurization rate of up to 98.0%.