2019
DOI: 10.1021/acs.iecr.9b01250
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Influences of Acid Post-Treatment on High Silica SSZ-13 Zeolite Membrane

Abstract: Single gas permeance performance of the high silica SSZ-13 zeolite membrane (Si/Al = 79) was greatly improved by acid post-treatment in this work. Effects of post-treatment conditions, such as post-treatment temperature (25, 60, 80, and 100 °C) and time (0–2 h), acid concentration (0–0.6 H+ mol/L), and acid type (HCl, HNO3, H2SO4, and H3PO4), on the single gas permeance performance of the membrane were investigated in this study. Morphology and structure of the acid post-treated membrane is identical with the … Show more

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Cited by 23 publications
(18 citation statements)
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“…SSZ-13 zeolite membranes were prepared on different supports, and the preparation procedure of the membranes was similar to that reported in our previous studies. 20,22 The molar composition of the initial synthesis gel for membranes is 1000SiO 2 : 100Na 2 O: 5Al 2 O 3 : 100TMAdaOH: 80000H 2 O. It is noted that the SSZ-13 zeolite membranes are fabricated on the homemade α-alumina supports (Foshan Ceramics Research Institute, pore size: 2∼3 μm, porosity: 38%, 100 mm length, 12 mm OD, 9 mm ID) and mullite supports (Noritake, pore size: 1.3 μm, porosity: 40%, 100 mm length, 12 mm OD, 9 mm ID).…”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…SSZ-13 zeolite membranes were prepared on different supports, and the preparation procedure of the membranes was similar to that reported in our previous studies. 20,22 The molar composition of the initial synthesis gel for membranes is 1000SiO 2 : 100Na 2 O: 5Al 2 O 3 : 100TMAdaOH: 80000H 2 O. It is noted that the SSZ-13 zeolite membranes are fabricated on the homemade α-alumina supports (Foshan Ceramics Research Institute, pore size: 2∼3 μm, porosity: 38%, 100 mm length, 12 mm OD, 9 mm ID) and mullite supports (Noritake, pore size: 1.3 μm, porosity: 40%, 100 mm length, 12 mm OD, 9 mm ID).…”
Section: Methodsmentioning
confidence: 99%
“…It is noted that the SSZ-13 zeolite membranes are fabricated on the homemade α-alumina supports (Foshan Ceramics Research Institute, pore size: 2∼3 μm, porosity: 38%, 100 mm length, 12 mm OD, 9 mm ID) and mullite supports (Noritake, pore size: 1.3 μm, porosity: 40%, 100 mm length, 12 mm OD, 9 mm ID). The assynthesized membranes were post-treated by 0.2 M H 2 SO 4 aqueous solution at room temperature for 0.5 h, and the acid-treated membranes were washed and dried in an oven at 373 K. 20 2.2. Characterization and Gas Separation.…”
Section: Methodsmentioning
confidence: 99%
“…The Al of the network generates a negative charge that is compensated by cations, thus giving the material a cation-exchange property. These materials are used in diverse processes, including adsorption, cation exchange, separation, and catalysis [ 25 , 26 , 27 , 28 , 29 , 30 ].…”
Section: Introductionmentioning
confidence: 99%
“…A zeolite CHA framework has an 8-member-ring, straight, and 3D pore structure with a pore window size of 3.8 Å × 3.8 Å. It is a promising membrane material for distinguishing hydrogen (kinetic diameter of 2.8 Å) from methane (kinetic diameter of 3.8 Å) or higher hydrocarbons by size difference . There were some reports to develop CHA zeolite membranes such as chabazite, SSZ-13, and Si-CHA for CO 2 separation from N 2 and CH 4.…”
Section: Introductionmentioning
confidence: 99%
“…It is a promising membrane material for distinguishing hydrogen (kinetic diameter of 2.8 Å) from methane (kinetic diameter of 3.8 Å) or higher hydrocarbons by size difference. 13 There were some reports 14−19 to develop CHA zeolite membranes such as chabazite, SSZ-13, and Si-CHA for CO 2 separation from N 2 and CH 4. But, the literature for H 2 /CH 4 separation using CHA zeolite membranes is very scare.…”
Section: Introductionmentioning
confidence: 99%