Pressure-volume-temperature relationships of trimethoxymethylsilane and tetramethyl orthosilicate at temperatures ranging from 303.2 to 363.2 K and pressures up to 160 MPa
The pressure-volume-temperature (PVT) relationships for trimethoxymethylsilane (MTMS, CH3(CH3O)3Si) and tetramethyl orthosilicate (TMOS, (CH3O)4Si) were measured at temperatures ranging from 303.2 to 363.2 K and pressures up to 160 MPa. Density measurements were carried out with an experimental appa...
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| Main Authors: | , , , , |
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| Format: | Article |
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ACS Publications
2020
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| Subjects: | |
| Online Access: | http://eprints.utm.my/id/eprint/89938/ http://dx.doi.org/10.1021/acs.jced.9b00765 |
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| Summary: | The pressure-volume-temperature (PVT) relationships for trimethoxymethylsilane (MTMS, CH3(CH3O)3Si) and tetramethyl orthosilicate (TMOS, (CH3O)4Si) were measured at temperatures ranging from 303.2 to 363.2 K and pressures up to 160 MPa. Density measurements were carried out with an experimental apparatus based on the variable volume method. The standard uncertainties u(T) = 0.17 K and u(P) = 0.14 MPa, and the relative combined expanded uncertainty Ur (0.95 level of confidence) were Ur(ρ) = (0.0016 and 0.0022) for MTMS and TMOS, respectively. The obtained PVT relationships were correlated using the Tait equation and the Sanchez-Lacombe equation of state to determine the characteristic parameters. |
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