引用本文:
Xiao Gang ZHANG, Guang Ying YANG, Bu Xing HAN, Xi Feng ZHANG, Hai Ke YAN. A Calorimeter for Measuring the Enthalpy of Solution of Solid Solutes in supercritical Fluids and Study of CO2-Naphthlene System[J]. Chinese Chemical Letters,
2001, 12(1): 79-80.
Citation: Xiao Gang ZHANG, Guang Ying YANG, Bu Xing HAN, Xi Feng ZHANG, Hai Ke YAN. A Calorimeter for Measuring the Enthalpy of Solution of Solid Solutes in supercritical Fluids and Study of CO2-Naphthlene System[J]. Chinese Chemical Letters, 2001, 12(1): 79-80.
Citation: Xiao Gang ZHANG, Guang Ying YANG, Bu Xing HAN, Xi Feng ZHANG, Hai Ke YAN. A Calorimeter for Measuring the Enthalpy of Solution of Solid Solutes in supercritical Fluids and Study of CO2-Naphthlene System[J]. Chinese Chemical Letters, 2001, 12(1): 79-80.
A Calorimeter for Measuring the Enthalpy of Solution of Solid Solutes in supercritical Fluids and Study of CO2-Naphthlene System
摘要:
An apparatus for measuring the enthalpy of solution of solids in supercritical fluids (SCFs) was constructed. The enthalpy of solution (ΔH) of naphthalene in supercritical (SC) CO2 was measured at 308.15 K in the pressure range from 8~11 MPa. It was found that ΔH was negative in the pressure range from 8 to 10 MPa, and the absolute value of ΔH decreases with increasing pressure. However, ΔH became positive at the pressures higher than 10 MPa. This unusual phenomenon can be explained by clustering between CO2 and naphthalene.
English
A Calorimeter for Measuring the Enthalpy of Solution of Solid Solutes in supercritical Fluids and Study of CO2-Naphthlene System
Abstract:
An apparatus for measuring the enthalpy of solution of solids in supercritical fluids (SCFs) was constructed. The enthalpy of solution (ΔH) of naphthalene in supercritical (SC) CO2 was measured at 308.15 K in the pressure range from 8~11 MPa. It was found that ΔH was negative in the pressure range from 8 to 10 MPa, and the absolute value of ΔH decreases with increasing pressure. However, ΔH became positive at the pressures higher than 10 MPa. This unusual phenomenon can be explained by clustering between CO2 and naphthalene.
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Key words:
- Solution enthalpy
- / supercritical fluid
- / molecular interaction
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