2020
DOI: 10.1021/acs.energyfuels.0c01720
|View full text |Cite
|
Sign up to set email alerts
|

Separation Performance of Si-CHA Zeolite Membrane for a Binary H2/CH4 Mixture and Ternary and Quaternary Mixtures Containing Impurities

Abstract: The separation of H2/CH4 mixtures is very common in the natural gas and petrochemical industries. There are some higher C2–C4 hydrocarbons and water vapor that are used as impurity gases. Si-CHA zeolite membranes display a high H2 permeance of 1.44 × 10–6 mol/(m2 s Pa) (permeability of 10800 barrers) and H2/CH4 selectivity of 85 for an equimolar H2/CH4 mixture at 298 K and 0.2 MPa pressure drop. A third gas decreased H2 permeance and H2/CH4 selectivity of the membrane. Hydrogen permeance was reduced in an orde… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3
1
1

Citation Types

0
17
0

Year Published

2020
2020
2023
2023

Publication Types

Select...
9
1

Relationship

1
9

Authors

Journals

citations
Cited by 29 publications
(17 citation statements)
references
References 53 publications
0
17
0
Order By: Relevance
“…Industrial gas streams often contain impurities such as other small hydrocarbons such as C2H6 . [58][59] Refinery off-gas mixtures usually consist of around 20 mol% of C2 gases, whereas ethylene off-gas mixtures usually consist only trace amount of H2 and C2H6 with a large amount of CH4. 60 To evaluate how C2H6 impurities affect the H2/CH4 separation capability of P5, the gas permeabilities were measured for ternary mixtures of H2/CH4/C2H6 of varying H2 and C2H6 compositions fed at a total pressure of 6.9 bar.…”
Section: Resultsmentioning
confidence: 99%
“…Industrial gas streams often contain impurities such as other small hydrocarbons such as C2H6 . [58][59] Refinery off-gas mixtures usually consist of around 20 mol% of C2 gases, whereas ethylene off-gas mixtures usually consist only trace amount of H2 and C2H6 with a large amount of CH4. 60 To evaluate how C2H6 impurities affect the H2/CH4 separation capability of P5, the gas permeabilities were measured for ternary mixtures of H2/CH4/C2H6 of varying H2 and C2H6 compositions fed at a total pressure of 6.9 bar.…”
Section: Resultsmentioning
confidence: 99%
“…Huang et al report a new supramolecular porous material, named NTU-69, which has a one-dimensional (1D) channel with an alternating cage and tube associated with reversible crystal transformation. Activated NTU-69 shows complete C 2 H 2 capture from the C 2 H 2 /C 2 H 4 mixture associated with a high ideal adsorbed solution theory (IAST) selectivity and uptake ratio at 298 K. Wu et al report H 2 /CH 4 separations using a Si-CHA zeolite membrane, which displays high H 2 permeance and H 2 /CH 4 selectivity for an equimolar H 2 /CH 4 mixture at 298 K and 0.2 MPa pressure drop. A third gas decreases the H 2 permeance and H 2 /CH 4 selectivity of the Si-CHA zeolite membrane, and the hydrogen permeance was reduced in an order similar to the adsorption amount in zeolite: H 2 O > C 3 H 8 > n -butane > ethane.…”
Section: Gas Separation/purificationmentioning
confidence: 99%
“…The zeolite thin film/membranes are among inorganic membranes which consist of hydrated crystalline aluminosilicates with open three-dimensional framework structures, made up of SiO 4 and AlO 4 tetrahedrons linked by sharing their oxygen atom to form regular intracrystalline cavities and channels of atomic dimensions. The research of zeolite thin film/membrane is an attractive topic of inorganic membrane technology due to their various applications, such as gas or liquid separation [ 1 , 2 , 3 , 4 , 5 ], chemical sensors [ 6 , 7 , 8 ], catalytic membrane [ 9 , 10 ], dielectric thin films [ 11 , 12 ], corrosion-resistant coatings [ 12 , 13 ] and biological application [ 14 ].…”
Section: Introductionmentioning
confidence: 99%