Thiophene cracking on zinc modified beta zeolite
| Autor: | Lam Yiu Lau, Luiz Antônio Magalhães Pontes, Daniel Freire Almeida, Ronaldo Costa Santos, Danilo de Aguiar Pontes |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010405 organic chemistry
Process Chemistry and Technology chemistry.chemical_element Context (language use) Zinc 010402 general chemistry 01 natural sciences Catalysis 0104 chemical sciences Hexane chemistry.chemical_compound Cracking chemistry Thiophene Physical and Theoretical Chemistry Selectivity Zeolite Nuclear chemistry |
| Zdroj: | Molecular Catalysis. 470:112-119 |
| ISSN: | 2468-8231 |
| DOI: | 10.1016/j.mcat.2019.04.001 |
| Popis: | 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 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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