Separating Hydrocarbon Mixtures by Driving the Components in Opposite Directions: High Degree of Separation Factor and Energy Efficiency
| Autor: | Subramanian Yashonath, Prabal K. Maiti, Shubhadeep Nag, G. Ananthakrishna |
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| Rok vydání: | 2020 |
| Předmět: |
Green chemistry
Materials science Orders of magnitude (temperature) Monte Carlo method General Physics and Astronomy Non-equilibrium thermodynamics 01 natural sciences law.invention Hydrocarbon mixtures chemistry.chemical_compound chemistry Neopentane Chemical physics law 0103 physical sciences Levitation Blow torch 010306 general physics |
| Zdroj: | Physical Review Letters. 124 |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/physrevlett.124.255901 |
| Popis: | A radically different approach for separation of molecular mixtures is proposed. A judicious combination of levitation effect observed in zeolites with a counter intuitive Landauer blow torch effect provides driving forces for the two components of the mixture to move in opposite directions. Using nonequilibrium Monte Carlo simulations, we illustrate the efficacy of the method for separating real mixtures of both linear $n$-pentane and its branched isomer, neopentane, and linear $n$-hexane and its branched isomer, 2,2-dimethylbutane. The method yields several orders of magnitude improvement in separation factor and relative energy efficiency by using submicron zeolite column. The extremely high purity of the resulting single components makes the method best suited for green chemistry. |
| Databáze: | OpenAIRE |
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