An elevated temperature titration calorimeter

Technical Report · Sat Jun 01 00:00:00 EDT 1991

OSTI ID:5550793

Smith, J R; Zanonato, P L; Choppin, G R ^[1]

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1. Florida State Univ., Tallahassee, FL (USA). Dept. of Chemistry

A variable-temperature (313 K to 353 K) titration calorimeter of high sensitivity has been constructed. The purpose of the calorimeter is to study temperature effects on the enthalpies of complex formation and of other reactions of metal cations such as hydrolysis and precipitation. Operation of the calorimetric system, including that final calculation of the heat released during titration, is automatic via computer control. Calibration tests of the calorimeter using 2-amino-2-hydroxymethyl-1,3-propanediol gave -(46.0 {plus minus} 0.3) kJ mol{sup {minus}1} and -(46.2 {plus minus} 0.2) kJ mol{sup {minus}1} for the enthalpy of protonation, at 318 K and at 343 K, respectively. For titrations of 2-bis(2-hydroxyethyl) amino-2-hydroxymethyl-1,3-propanediol, enthalpy of protonation values of -(28.4 {plus minus} 0.3) kJ mol{sup {minus}1} and -(29.3 {plus minus} 0.2) kJ mol{sup {minus}1} were obtained at 318 K and at 343 K, respectively. 6 refs., 3 figs., 2 tabs.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5550793
• Report Number(s): UCRL-CR-107905; ON: DE91015765
• Country of Publication: United States
• Language: English

Related Subjects

47 OTHER INSTRUMENTATION
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CALORIMETERS
DESIGN
TESTING
GLYCOLS
TITRATION
COMPUTERIZED CONTROL SYSTEMS
ENTHALPY
HIGH TEMPERATURE
PROTONS
ALCOHOLS
BARYONS
CONTROL SYSTEMS
ELEMENTARY PARTICLES
FERMIONS
HADRONS
HYDROXY COMPOUNDS
MEASURING INSTRUMENTS
NUCLEONS
ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
440800* - Miscellaneous Instrumentation- (1990-)
400102 - Chemical & Spectral Procedures