eprintid: 5977 rev_number: 2 eprint_status: archive userid: 1 dir: disk0/00/00/59/77 datestamp: 2023-11-09 16:17:43 lastmod: 2023-11-09 16:17:43 status_changed: 2023-11-09 16:04:26 type: article metadata_visibility: show creators_name: Ullah, Z. creators_name: Azmi Bustam, M. creators_name: Muhammad, N. creators_name: Man, Z. creators_name: Khan, A.S. title: Synthesis and thermophysical properties of hydrogensulfate based acidic ionic liquids ispublished: pub note: cited By 39 abstract: Abstract Three ionic liquids (ILs): 1-butyl-3-methyl-imidazolium hydrogensulfate C4C1ImHSO4, 1-butyl-imidazolium hydrogensulfate C4C0ImHSO4, and 1-methyl-imidazolium hydrogensulfate C1C0ImHSO4, were synthesized and characterized. The effect of alky group incorporation into the imidazolium cation was evaluated in terms of changes in density, surface tension, viscosity, and thermal degradation of the ILs. The viscosity and density were measured within the temperature range of 293.15-373.15 K, and experimental values of density were used to calculate molar volume, standard molar entropy, lattice energy, and thermal expansion coefficients. Glasser's approach was used to calculate the lattice energies of the ILs. Surface tensions in the temperature range of 293.15-353.15 K were also measured and surface tension values were used to estimate the surface entropy and enthalpy of the ILs. Refractive indices were measured with an ATAGO refractometer (RX-5000α) within the temperature range of 293.15-323.15 K. Thermal gravimetric analysis was performed in the temperature range of 323.15-773.15 K. © Springer Science+Business Media New York 2015. date: 2015 publisher: Springer New York LLC official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84937762993&doi=10.1007%2fs10953-015-0329-x&partnerID=40&md5=e697edf233ba54152784886986ff40c6 id_number: 10.1007/s10953-015-0329-x full_text_status: none publication: Journal of Solution Chemistry volume: 44 number: 3-4 pagerange: 875-889 refereed: TRUE issn: 00959782 citation: Ullah, Z. and Azmi Bustam, M. and Muhammad, N. and Man, Z. and Khan, A.S. (2015) Synthesis and thermophysical properties of hydrogensulfate based acidic ionic liquids. Journal of Solution Chemistry, 44 (3-4). pp. 875-889. ISSN 00959782