Selective Adsorption for Removal of Nitrogen Compounds from Liquid Hydrocarbon Streams over Carbon- and Alumina-Based Adsorbents
| Autor: | Chunshan Song, Xiaoliang Ma, Masoud Almarri |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
chemistry.chemical_classification
General Chemical Engineering Quinoline Inorganic chemistry Activated alumina chemistry.chemical_element General Chemistry Industrial and Manufacturing Engineering chemistry.chemical_compound Adsorption Hydrocarbon chemistry Dibenzothiophene Selective adsorption medicine Carbon Activated carbon medicine.drug |
| Zdroj: | Industrial & Engineering Chemistry Research. 48:951-960 |
| ISSN: | 1520-5045 0888-5885 |
| DOI: | 10.1021/ie801010w |
| Popis: | In order to explore the adsorptive denitrogenation of liquid hydrocarbon streams for producing ultraclean fuels, the adsorption performance of seven representative activated carbon samples and three activated alumina samples was evaluated in a batch adsorption system and a fixed-bed flow adsorption system for removing quinoline and indole from a model diesel fuel in the coexistence of sulfur compounds and aromatics. Different adsorbents show quite different selectivity toward basic and nonbasic nitrogen compounds (quinoline and indole) and sulfur compounds (dibenzothiophene and 4,6-dimethyldibenzothiophene). The activated carbons generally show higher capacity than activated alumina samples for removing the nitrogen compounds. The adsorption capacity and selectivity of the activated carbons for nitrogen compounds were further correlated with their textural properties and oxygen content. It was found that (1) the microporous surface area and micropore volume are not a key factor for removal of the nitrogen... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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