Journal of Chemical and Petroleum Engineering

Journal of Chemical and Petroleum Engineering

Dissociation Enthalpy of Methane/Carbon dioxide/Nitrogen and Tetra n-butylammonium Chloride Semiclathrate Hydrates Using the Clausius-Clapeyron Equation

Document Type : Research Paper

Authors
Abolfazl Mohammadi 1
Mohammad Aryaeipanah 2
Maryam Hakimizadeh 2
1 Department of Chemical Engineering, University of Bojnord, Bojnord, Iran.
2 Department of Chemical Engineering, University of Bojnord, Bojnord, Iran
10.22059/jchpe.2022.335066.1373
Abstract
Due to high storage capacity, high dissociation enthalpy, and the appropriate melting point of gas hydrates, these compounds have a potential for many industrial applications. Tetra n-butylammonium halides are typical guest molecule involved in the formation of semiclathrate hydrates. In this manuscript, the dissociation enthalpy of methane/carbon dioxide/nitrogen + Tetra n-butylammonium Chloride semiclathrate hydrates is evaluated using the Clausius-Clapeyron equation. The equilibrium data are measured in a 460 cm3 stirred batch reactor using an isochoric pressure-search method. The dissociation enthalpy data were evaluated in the temperature range of (275.15 to 304.75) K and the pressure range of (0.36 to 10.57) MPa at (0 - 0.36) mass fraction of Tetra n-butylammonium Chloride. The results showed that the utilization of Tetra n-butylammonium Chloride increases the amount of dissociation enthalpy of semiclathrate hydrates per mole of the hydrated gas. By increasing the mass fraction of Tetra n-butylammonium Chloride, the amount of dissociation enthalpy per mole of hydrated gas increased.
Keywords
Clausius-Clapeyron
Dissociation Enthalpy
Gas Hydrates
Semiclathrates
Tetra-n-Butylammonium Chloride
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Journal of Chemical and Petroleum Engineering
Volume 56, Issue 1
June 2022
Pages 123-131

  • Receive Date 10 December 2021
  • Revise Date 10 January 2022
  • Accept Date 12 January 2022