Memory effect in DDR zeolite powder and membrane synthesis

Vo, Phuong Nguyen Xuan; Phan, Phuong D.; Ngo, Phuong Thuy; Le-Phuc, Nguyen; Tran, Tri Van; Luong, Thuy Ngoc; Wotzka, Alexander; Seeburg, Dominik; Wohlrab, Sebastian

doi:10.1016/j.micromeso.2018.12.031

Cited by 3 publications

(3 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, despite the advancements in DD3R membrane preparation owing to the ozone detemplating method, large-scale production remains a challenge because of the issues associated with the fabrication process. These include the formation of competitive phases, like Dodecasil-1H (DOH) and Sigma-2 (SGT) zeolites 6,7 , and the development of intercrystalline defects, which reduce the selectivity at higher pressures, as observed by Wang et al 8 , where the selectivity decreased from 200 at 1.4 bar to 15 at 40 bar.…”

Section: Introductionmentioning

confidence: 95%

A Low-Cost Dual Layer Deca-Dodecasil 3 Rhombohedral-Alumina Hollow Fiber for CO2/CH4 Separation

Barbosa,

Habert,

Borges

2024

Mat. Res.

View full text Add to dashboard Cite

Membrane technology offers solutions for separation of complex gas mixtures. Therefore, new efficient and durable membranes are required to produce gas permeation modules with high area/volume for CO 2 removal from natural gas. This study aims to develop cost-effective zeolite DD3R alumina composite hollow fibers to achieve these process requirements. A porous hollow fiber support from low-cost alumina was prepared via phase inversion followed by thermal treatment. DD3R zeolite seeds were then implanted over the surface of the microporous hollow fibers to form a selective layer by hydrothermal synthesis. The thickness of the selective layer was controlled by the seed concentration, which also affected the crystal intergrowth and competing zeolite phase formation, Sigma-2, which influenced the membrane performance. A reduced-diameter composite DD3R-alumina hollow fiber was obtained with a selectivity of 203 and a CO 2 permeance of 5.4 x 10 -8 mol m −2 s −1 Pa −1 at a pressure of 2 bar.

show abstract

Section: Introductionmentioning

confidence: 95%

A Low-Cost Dual Layer Deca-Dodecasil 3 Rhombohedral-Alumina Hollow Fiber for CO2/CH4 Separation

Barbosa,

Habert,

Borges

2024

Mat. Res.

View full text Add to dashboard Cite

show abstract

“…Almost ideally, deca-dodecasil 3 rhombohedral (DDR) type zeolites that have a pore size of 0.36 × 0.44 nm 2 can differentiate the molecular transport of slightly different sized molecules. − Indeed, the DDR zeolite membrane based separation of CO 2 (kinetic diameter of 0.33 nm) from the slightly larger molecules CH 4 (0.38 nm) and N 2 (0.364 nm) is suitable for biogas upgrading and postcombustion carbon capture, respectively. , In particular, biogas (a clean renewable energy source) upgrading through DDR zeolite membranes is highly desirable for recovering CH 4 (which can be used for fuels and chemicals) and segregating CO 2 (which must be stored or converted). ,, Despite this high potential of DDR zeolites, it is quite challenging to synthesize the corresponding DDR membranes. Some related issues addressed in the literature − are the wide particle size distribution of seed crystals, long synthesis duration, low reproducibility of the synthesis, and susceptibility of the synthesis to the preparation methods. Among them, the synthesis of monodispersed, small DDR seed particles (around 50–300 nm), apparently requiring alternative approaches, , is a prerequisite for reliable membrane manufacturing.…”

Section: Introductionmentioning

confidence: 99%

“…In this study, the conventional OSDA of 1-adamantylamine (ADA) , was used for the first time for the heteroepitaxial secondary growth of a CHA seed layer, though an ADA-based DDR zeolite synthesis is not reportedly reliable for forming homogeneous DDR particles or film/membrane. ,,, Desirably, this heteroepitaxial growth allowed for the formation of a few micrometers thick, hydrophobic film (DDR@CHA hybrid) with a majority of DDR zeolite on industrially desirable high-flux α-Al 2 O 3 tubular supports. In particular, low-temperature ozone calcination was the key to eliminating apparent defects.…”

Section: Introductionmentioning

confidence: 99%

A Hybrid Zeolite Membrane-Based Breakthrough for Simultaneous CO₂ Capture and CH₄ Upgrading from Biogas

Jeong

Kim

Lee

et al. 2022

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Biogas is an environmentally friendly and sustainable energy resource that can substitute or complement conventional fossil fuels. For practical uses, biogas upgrading, mainly through the effective separation of CO 2 (0.33 nm) and CH 4 (0.38 nm), is required to meet the approximately 90−95% purity of CH 4 , while CO 2 should be concomitantly purified. In this study, a high CO 2 perm-selective zeolite membrane was synthesized by heteroepitaxially growing a chabazite (CHA) zeolite seed layer with a synthetic precursor that allowed the formation of all-silica deca-dodecasil 3 rhombohedral (DDR) zeolite (with a pore size of 0.36 × 0.44 nm 2 ). The resulting hydrophobic DDR@CHA hybrid membrane on an asymmetric α-Al 2 O 3 tube was thin (ca. 2 μm) and continuous, thus providing both high flux and permselectivity for CO 2 irrespective of the presence or absence of water vapor (the third largest component in the biogas streams). To the best of our knowledge, the CO 2 permeance of (2.9 ± 0.3) × 10 −7 mol m −2 s −1 Pa −1 and CO 2 /CH 4 separation factor of ca. 274 ± 73 at a saturated water vapor partial pressure of ca. 12 kPa at 50 °C have the highest CO 2 / CH 4 separation performance yet achieved. Furthermore, we explored the membrane module properties of the hybrid membrane in terms of the recovery and purity of both CO 2 and CH 4 under dry and wet conditions. Despite the high intrinsic membrane properties of the current hybrid membrane, reflected by the high permeance and SF, the corresponding module properties indicated that high-performance separation of CO 2 and CH 4 for the desired biogas upgrading was achieved at a limited processing capacity. This supports the importance of understanding the correlation between the membrane and module properties, as this will provide guidance for the optimal operating conditions.

show abstract

Simultaneously enhanced permeability, selectivity and anti-plasticization of polyimide membrane for natural gas purification by incorporating surface-engineered DD3R zeolite

Chen,

Wang,

Yang

et al. 2024

Journal of Membrane Science

View full text Add to dashboard Cite

Memory effect in DDR zeolite powder and membrane synthesis

Cited by 3 publications

References 24 publications

A Low-Cost Dual Layer Deca-Dodecasil 3 Rhombohedral-Alumina Hollow Fiber for CO2/CH4 Separation

A Low-Cost Dual Layer Deca-Dodecasil 3 Rhombohedral-Alumina Hollow Fiber for CO2/CH4 Separation

A Hybrid Zeolite Membrane-Based Breakthrough for Simultaneous CO₂ Capture and CH₄ Upgrading from Biogas

Simultaneously enhanced permeability, selectivity and anti-plasticization of polyimide membrane for natural gas purification by incorporating surface-engineered DD3R zeolite

Contact Info

Product

Resources

About

Memory effect in DDR zeolite powder and membrane synthesis

Cited by 3 publications

References 24 publications

A Low-Cost Dual Layer Deca-Dodecasil 3 Rhombohedral-Alumina Hollow Fiber for CO2/CH4 Separation

A Low-Cost Dual Layer Deca-Dodecasil 3 Rhombohedral-Alumina Hollow Fiber for CO2/CH4 Separation

A Hybrid Zeolite Membrane-Based Breakthrough for Simultaneous CO2 Capture and CH4 Upgrading from Biogas

Simultaneously enhanced permeability, selectivity and anti-plasticization of polyimide membrane for natural gas purification by incorporating surface-engineered DD3R zeolite

Contact Info

Product

Resources

About

A Hybrid Zeolite Membrane-Based Breakthrough for Simultaneous CO₂ Capture and CH₄ Upgrading from Biogas