Separating a linear C5hydrocarbon from a branched C6hydrocarbon:: N-pentane from 2,2-dimethyl butane using levitation and blow torch effects

Nag, S and Maiti, PK and Yashonath, S (2021) Separating a linear C5hydrocarbon from a branched C6hydrocarbon:: N-pentane from 2,2-dimethyl butane using levitation and blow torch effects. In: Physical Chemistry Chemical Physics, 23 (33). pp. 18102-18111.

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Abstract

The separation of linear from branched hydrocarbons is often required in many situations. There are several methods through which they can be separated but none provides a very high degree of purity or works without considerable expenditure of energy. Recently, a novel method was proposed to separate a mixture of neopentane and n-pentane. The present work demonstrates that the method can be used for separating other mixtures of hydrocarbons as well, by attempting the separation of a mixture of 2,2-dimethyl butane and n-pentane. Intermolecular interaction potentials have been modified to reproduce the experimental heat of adsorption and diffusivity of 2,2-dimethyl butane and n-pentane in zeolite NaY. The method involves choosing the correct host zeolite or other porous solids and introducing hot zones at appropriate positions. This result drives both the components to the opposite ends of the zeolite column, thus leading to separation. The achieved separation factors are much higher than what can be obtained with the help of existing methods. Different properties have been computed to understand the process involved in the separation of the mixture. The approach employed here uses very little energy for separation, making it suitable for green chemistry. © the Owner Societies.

Item Type:	Journal Article
Publication:	Physical Chemistry Chemical Physics
Publisher:	Royal Society of Chemistry
Additional Information:	The copyright for this article belongs to Royal Society of Chemistry
Keywords:	Butane; Hydrocarbons; Mixtures; Separation; Zeolites, 2 ,2-dimethyl butane; Branched hydrocarbons; Green chemistry; Heat of adsorption; Intermolecular interaction potentials; Porous solids; Separation factors; Zeolite NaY, Paraffins
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	02 Dec 2021 12:54
Last Modified:	02 Dec 2021 12:54
URI:	http://eprints.iisc.ac.in/id/eprint/70069

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