高硫柴油吸附脱硫剂的研究

研究了不同的Cu2+分子筛在常温常压下吸附高硫柴油中的硫化合物。采用水热合成法和离子交换法制备含Cu2+分子筛(CuMCM41和CuZSM5),用于固定床吸附脱硫。其中每克CuMCM41处理5 mL高硫柴油后达到饱和,并且能把含硫量降到300×10-6(质量分数)。吸附剂对硫化物具有很强的选择性,用CuMCM41来吸附模拟柴油,吸附结果表明它对噻吩和苯并噻吩的吸附性比对萘要强。

Adsorbents for Removing Sulfur in High Sulfur-Containing Diesel

Desulfurization of high sulfur-containing diesel(mass fraction of(1 600)×10~(-6)) by different Cu~(2+) zeolites was analyzed in a fixed-bed adsorber.The zeolites were prepared by both direct synthesis and ion-exchange methods with HZSM5,then used for adsorption desulfurization of diesel fuel at room temperature and atmospheric pressure.The CuMCM41 adsorbent is capable of treating 5 mL of high sulfur-containing diesel fuel per gram of adsorbent,desulfurizing the diesel to concertrations less than 300×10~(-6)(mass fraction).These sorbents have been proven to have high sulfur-selective ability.CuMCM41 was used to adsorb model diesel,the results showed that CuMCM41 adsorbed more thiophenes and benzothiophene than naphthalene from model diesel.