Highly selective high-silica SSZ-13 zeolite membranes for H2 production from syngas |
| |
| Affiliation: | 1. State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 210009, PR China;2. School of Mechanical and Power Engineering, Nanjing Tech University, Nanjing, 210009, PR China;3. Research Institute of Innovative Technology for the Earth (RITE), 9-2 Kizugawadai, Kizugawa, Kyoto, 619-0292, Japan;1. Ceramic Membrane Division, Central Glass & Ceramic Research Institute, CSIR, Jadavpur, Kolkata 700 032, India;2. BARC, Trombay, Mumbai 400 085, India;1. School of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China;2. Research Center for Advanced Micro/Nano Fabrication Materials, Shanghai University of Engineering Science, Shanghai 201620, China;3. Linfen Bolishi Nanomaterials Co., Ltd., Xiangyuan county, Linfen city, Shanxi 041507, China;4. Shanghai Yingzhi Polishing Materials Co., Ltd., 10688 Beiqing Rd, Qingpu District, Shanghai 201700, China |
| |
| Abstract: | A highly CO2-selective high-silica SSZ-13 zeolite membrane was used for H2 production by separating CO2 from syngas (CO2/H2 mixture). High-silica SSZ-13 zeolite membranes were fabricated using outside asymmetric alumina tubes by secondary growth of ball-milled SSZ-13 seeds. The composition of membrane gel and synthesis time were modified. The Si/Al ratio in framework of the membrane was as high as 42 when SiO2/Al2O3 ratio of the gel increased to 140. The effects of test parameters such as pressure drop, temperature, feed flow rate and concentration on membrane performance were investigated. The test pressure drop was up to 2 MPa. The ultra-high CO2/H2 selectivity of 161 with excellent CO2 permeances of ~6.3 × 10?7 mol/(m2 s Pa) (=3760 GPU) were observed for the best membrane at 243 K and pressure drop of 0.2 MPa. Carbon dioxide permeance through high-silica SSZ-13 zeolite membrane was 4.2 × 10?7 mol/(m2 s Pa) (=2500 GPU) at 298 K and pressure drop of 2.0 MPa, and the CO2/H2 selectivity was 17.4. The current high-silica SSZ-13 zeolite membranes exceeded the upper bound of polymeric membranes and other inorganic membranes in CO2/H2 plots and owned great potentials for H2 production from syngas. |
| |
| Keywords: | Hydrogen production High-silica SSZ-13 zeolite membrane Syngas purification |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
