Solubility of hydrogen in toluene for the ternary system H2 + CO2 + toluene from 305 to 343 K and 1.2 to 10.5 MPa |
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| Institution: | 1. State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, People’s Republic of China;2. Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, People’s Republic of China;1. School of Science, China University of Petroleum, Qingdao 266580, Shandong, China;2. School of Petroleum Engineering, China University of Petroleum, Qingdao 266580, Shandong, China;1. Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan;2. Unit of Elements Strategy Initiative for Catalysts & Batteries (ESICB), Kyoto University, Katsura, Kyoto 615-8520, Japan;3. Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), 1-1 Higashi, Tsukuba, Ibaraki, Japan;1. Department of Mechanical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India;2. Advanced Technology Development Center, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India |
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| Abstract: | The solubility of hydrogen in toluene in the presence of the compressed CO2 at the temperatures from 305 to 343 K and the pressures from 1.2 to 10.5 MPa was measured by using a continuous flow technique. The obtained data indicate that more hydrogen could be dissolved in toluene at the pressures higher than a certain value depending on temperature and the molar ratio of H2 to CO2 in gas. The Peng–Robinson equation of state associated with the van der Waals mixing rule were found to correlate the VLE data of the ternary system H2 + CO2 + toluene satisfactorily. From the volume expansion resulted from the dissolution of CO2 in toluene calculated by the proposed model, it was found that hydrogen solubility was generally increased with increasing volume expansion. A large volume expansion was required to enhance hydrogen solubility when the mole fraction of hydrogen in gas was low. |
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