Desulfurizing action of Troshkov Kaolin

Summary

• 1. An investigation has been made into the desulfurizing action of Troshkov kaolin on three samples of sulfur-containing gasolines and on mixtures of purified gasoline with propanedithiol, with diisopenyl sulfide, with thiophene, and with tetrahydrothiophene.

• 2. It has been shown that a catalyst prepared from unactivated Troshkov clay has a high desulfurizing propensity at 400°.

• 3. It has been found that thermal activation of the clay increases its desulfurizing activity by a factor of about 3.

• 4. Troshkov clay removes from gasoline not only aliphatic sulfur-containing compounds (mercaptans, thio-ethers), but also cyclic sulfur compounds (tetrahydrothiophene).