Adsorption–desorption of CO<sub>2</sub> on zeolite-Y-templated carbon at various temperatures

Gunawan, Triyanda; Wijiyanti, Rika; Widiastuti, Nurul

doi:10.1039/c8ra09200a

Cited by 41 publications

(40 citation statements)

References 32 publications

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“…Both zeolite-Y and ZTC showed typical type I adsorption isotherm, which corresponds to the microporous material. However, the type H4 hysteresis was observed in the ZTC, which suggests the presence of mesopores and narrow slit pores [ 37 , 45 ]. The important parameters obtained from N 2 adsorption/desorption are listed in table 1 .…”

Section: Resultsmentioning

confidence: 99%

“…The ZTC filler preparation followed our previously reported method [ 37 ]. The hollow fibre membranes were fabricated using the dry/wet spin method illustrated in figure 1 .…”

Section: Methodsmentioning

confidence: 99%

“…In this study, ZTC, a structurally unique form of three-dimensional graphene, was prepared by the impregnation of sucrose into zeolite-Y pores and used as membrane filler in hollow fibre BTDA-TDI/MDI (P84) co-polyimide membrane for gas separation. Our motive uses this material as a filler, owing to the benefits of material such as high surface area, high microporosity and ordered pore structure [ 36 , 37 ]. With such characteristics, it is predicted that the use of ZTC into polymer matrix would improve the gas permeability owing to ordered free main path (ordered pore) and gas selectivity owing to high microporosity.…”

Section: Introductionmentioning

confidence: 99%

“…As a result, making this material fits the required properties for the gas separation membrane. Previously, ZTC has decent CO 2 and H 2 adsorption capacity indicating good affinity towards the respective gas [ 37 , 38 ]. Thus, the gas flow behaviour needs to be controlled so that the adsorption of the stated gas can be avoided to improve the selectivity value.…”

Section: Introductionmentioning

confidence: 99%

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The utilization of micro-mesoporous carbon-based filler in the P84 hollow fibre membrane for gas separation

et al. 2021

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This research involved carrying out a unique micro-mesoporous carbon particle incorporation into P84 co-polyimide membrane for improved gas separation performance. The carbon filler was prepared using a hard template method from zeolite and known as zeolite-templated carbon (ZTC). This research aims to study the loading amount of ZTC into P84 co-polyimide toward the gas separation performance. The ZTC was prepared using simple impregnation method of sucrose into hard template of zeolite Y. The SEM result showing a dispersed ZTC particle on the membrane surface and cross-section. The pore size distribution (PSD) of ZTC revealed that the particle consists of two characteristics of micro and mesoporous region. It was noted that with only 0.5 wt% of ZTC addition, the permeability was boosted up from 4.68 to 7.06 and from 8.95 to 13.15 barrer, for CO 2 and H 2 respectively when compared with the neat membrane. On the other hand, the optimum loading was at 1 wt%, where the membrane received thermal stability boost of 10% along with the 62.4 and 35% of selectivity boost of CO 2 /CH 4 and H 2 /CH 4 , respectively. It was noted that the position of the filler on the membrane surface was significantly affecting the gas transport mechanism of the membrane. Overall, the results demonstrated that the addition of ZTC with proper filler position is a potential candidate to be applicable in the gas separation involving CO 2 and H 2 .

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Section: Resultsmentioning

confidence: 99%

“…The ZTC filler preparation followed our previously reported method [ 37 ]. The hollow fibre membranes were fabricated using the dry/wet spin method illustrated in figure 1 .…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The utilization of micro-mesoporous carbon-based filler in the P84 hollow fibre membrane for gas separation

et al. 2021

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“…Under these conditions, the presence of abundant moisture can lead to the formation of hydrogen bonding between water molecules in the moisture and oxygen species in the Si–O–Al frameworks of the zeolite structure [ 25 , 26 , 27 ], which reduces the permeation rate of the permeating gas. In addition, high zeolite loading leads to the formation of interfacial gaps that cause an increase in the membrane brittleness and a loss of selectivity [ 28 ]. Therefore, in this research, the zeolite pore wall was coated with a less hydrophilic material without compromising the permeation rate of penetrated gas.…”

Section: Introductionmentioning

confidence: 99%

P84/ZCC Hollow Fiber Mixed Matrix Membrane with PDMS Coating to Enhance Air Separation Performance

et al. 2020

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This research introduces zeolite carbon composite (ZCC) as a new filler on polymeric membranes based on the BTDA-TDI/MDI (P84) co-polyimide for the air separation process. The separation performance was further improved by a polydimethylsiloxane (PDMS) coating to cover up the surface defect. The incorporation of 1 wt% ZCC into P84 co-polyimide matrix enhanced the O2 permeability from 7.12 to 18.90 Barrer (2.65 times) and the O2/N2 selectivity from 4.11 to 4.92 Barrer (19.71% improvement). The PDMS coating on the membrane further improved the O2/N2 selectivity by up to 60%. The results showed that the incorporation of ZCC and PDMS coating onto the P84 co-polyimide membrane was able to increase the overall air separation performance.

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An investigation into the adverse effects of O2, SO2, and NOx on polyethyleneimine functional CO2 adsorbents

Jiang

2021

SN Appl. Sci.

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In this study, we investigated the influence of O2, SO2, and NOx on branched and linear polyethyleneimine (PEI) functional silica CO2 adsorbents (BPEI-SiO2 and LPEI-SiO2, respectively). O2 was much more likely to oxidize BPEI-SiO2, compared with LPEI-SiO2, to form C=O and C=N groups and led to a 23.0% decrease in the CO2 adsorption capacity after 990 min of cumulative contact with 10% O2. In contrast, LPEI-SiO2 lost only approximately 3.6% of its CO2 adsorption capacity, although O2 oxidized LPEI-SiO2 to form C=O groups. SO2 can cause severe degradation of BPEI-SiO2 and LPEI-SiO2 by forming heat-stable NH3+—and/or NH2+—containing adducts and by promoting the formation of urea linkages. After cumulative contact with 10, 50, and 200 ppm SO2 for 990 min, BPEI-SiO2 lost 18.2%, 61.4%, and 89.0% of its CO2 adsorption capacity, and LPEI-SiO2 lost 18.5%, 60.6%, and 78.5% of its CO2 adsorption capacity, respectively. NO2 at 10 ppm and NO at 200 ppm caused almost no loss in CO2 adsorption capacity after cumulative contact for 990 min, but both led to degradation of adsorbents. NO2 can cause irreversible formation of NH3+—and/or NH2+—containing adducts, acid products, N-nitro compounds (N–NO2), C-nitroso compounds (C–N=O), and C-nitro (C–NO2) compounds, and can promote the formation of urea linkages. NO can lead to the formation of NH3+—and/or NH2+—containing adducts and N-nitroso (N–N = O) compounds.

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Adsorption–desorption of CO₂ on zeolite-Y-templated carbon at various temperatures

Abstract: A micro-mesoporous structure of ZTC was synthesized via an impregnation method, and the structure assisted in a faster CO2 adsorption–desorption equilibrium.

Cited by 41 publications

References 32 publications

The utilization of micro-mesoporous carbon-based filler in the P84 hollow fibre membrane for gas separation

The utilization of micro-mesoporous carbon-based filler in the P84 hollow fibre membrane for gas separation

P84/ZCC Hollow Fiber Mixed Matrix Membrane with PDMS Coating to Enhance Air Separation Performance

An investigation into the adverse effects of O2, SO2, and NOx on polyethyleneimine functional CO2 adsorbents

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Adsorption–desorption of CO2 on zeolite-Y-templated carbon at various temperatures

Abstract: A micro-mesoporous structure of ZTC was synthesized via an impregnation method, and the structure assisted in a faster CO2 adsorption–desorption equilibrium.

Cited by 41 publications

References 32 publications

The utilization of micro-mesoporous carbon-based filler in the P84 hollow fibre membrane for gas separation

The utilization of micro-mesoporous carbon-based filler in the P84 hollow fibre membrane for gas separation

P84/ZCC Hollow Fiber Mixed Matrix Membrane with PDMS Coating to Enhance Air Separation Performance

An investigation into the adverse effects of O2, SO2, and NOx on polyethyleneimine functional CO2 adsorbents

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Product

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About

Adsorption–desorption of CO₂ on zeolite-Y-templated carbon at various temperatures