Add time:08/21/2019 Source:sciencedirect.com
One option for reducing the sulphur content in gasoline is the reduction in the FCC process using specific additives. In this context, the cracking of a hexane stream containing 100 ppm Thiophene (cas 110-02-1) was used to test Beta zeolite modified with zinc at different contents. It was confirmed that hydrogen transfer during n-hexane cracking promoted the reduction of thiophene, with H2S formation. However, increasing Zn content in the catalyst from 2 to 8% (m/m) led to a higher formation of alkyl-thiophene compounds rather than H2S formation. The most selective catalyst for H2S formation was Zn/BEA (2%), with a selectivity to H2S of 95.5% at 773 K.
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