Novel PTMSP-based membranes containing elastomeric fillers: Enhanced 1-butanol/water pervaporation selectivity and permeability

Borisov, Ilya L.; Малахов, А. О.; Khotimsky, V. S.; Литвинова, Е. Г.; Финкельштейн, Е. Ш.; Ушаков, Н. В.; Volkov, V. V.

doi:10.1016/j.memsci.2014.04.037

Cited by 65 publications

(34 citation statements)

References 35 publications

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“…To overcome this problem, several insitu product recovery techniques have been developed to remove butanol as it is made. These methods include liquid phase adsorption [20], liquid-liquid extraction [21], pervaporation [22], and gas stripping [23]. While advancements have been made in each of these areas, the expense of recovering butanol from diluted solutions has hindered commercial deployment.…”

Section: Introductionmentioning

confidence: 99%

Butanol vapor adsorption behavior on active carbons and zeolite crystal

Cao

Wang

et al. 2015

Applied Surface Science

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a b s t r a c tButanol is considered a promising, infrastructure-compatible biofuel. Unfortunately, the fermentation pathway for butanol production is restricted by its toxicity to the microbial strains used in the process. Gas stripping technology can efficiently remove butanol from the fermentation broth as it is produced, thereby decreasing its inhibitory effects. Adsorption can then be used to recover butanol from the vapor phase. Active carbon samples and zeolite were investigated for their butanol vapor adsorption capacities. Commercial activated carbon was modified via hydrothermal H 2 O 2 treatment, and the specific surface area and oxygen-containing functional groups of activated carbon were tested before and after treatment. Hydrothermal H 2 O 2 modification increased the surface oxygen content, Brunauer-Emmett-Teller surface area, micropore volume, and total pore volume of active carbon. The adsorption capacities of these active carbon samples were almost three times that of zeolite. However, the un-modified active carbon had the highest adsorption capacity for butanol vapor (259.6 mg g −1 ), compared to 222.4 mg g −1 after 10% H 2 O 2 hydrothermal treatment. Both modified and un-modified active carbon can be easily regenerated for repeatable adsorption by heating to 150 • C. Therefore, surface oxygen groups significantly reduced the adsorption capacity of active carbons for butanol vapor.

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Section: Introductionmentioning

confidence: 99%

Butanol vapor adsorption behavior on active carbons and zeolite crystal

Cao

Wang

et al. 2015

Applied Surface Science

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“…Figures 5 and 6 show the comparison of the membrane performance for pervaporation of the 1-butanol/water system from the literature. It can be seen that the best performance is in the case of PTMSP membranes [12,43,45]. Borisov et al [12] obtained a selectivity above 10 for the modified PTMSP membrane at 25 °C and between 5 and 10 for the original PTMSP membrane at 25 °C.…”

Section: Resultsmentioning

confidence: 97%

“…It can be seen that the best performance is in the case of PTMSP membranes [12,43,45]. Borisov et al [12] obtained a selectivity above 10 for the modified PTMSP membrane at 25 °C and between 5 and 10 for the original PTMSP membrane at 25 °C. Fadeev et al [43,45] obtained a selectivity between 5 and 10 for the PTMSP membrane at 25 °C, however the selectivity changed significantly with temperature (increase from 5.5 at 25 °C to 8.7 at 37 °C, but significant decrease to 2.5 at 70 °C).…”

Section: Resultsmentioning

confidence: 97%

“…For instance, PIM-1 (Fig. 1) has a high value of gas permeability, just a little lower than acetylene-based polymers such as poly(1-trimethylsilyl-1-propyne) (PTMSP), but better selectivity [11][12][13]. Other recently reported membrane separation materials, such as blended poly(dimethylsiloxane) (PDMS) -ionic liquid membranes [14][15][16], have been proposed as an alternative to pure PDMS membranes, frequently used in the butanol-water and acetone-water pervaporation processes [17,18] or for recovery of different solutes [14,15].…”

Section: Introductionmentioning

confidence: 99%

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Selective removal of butanol from aqueous solution by pervaporation with a PIM-1 membrane and membrane aging

Žák¹,

Klepić²,

Šťastná³

et al. 2015

Separation and Purification Technology

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“…PTMSP는 구조적으로 trimethylsily group을 가지고 있어 큰 자유부피 때문에 높 은 기체투과성을 보이지만 낮은 선택도와 투과 실험 시 시간이 경과 함에 따라 투과특성이 감소하는 단점을 갖고 있다 [19]. 이러한 PTMSP의 분리 성질들과 안정성을 개선하기 위하여 crosslinking, functionalization, co-and graft-polymerization 시키는 화학적 방법과 무기물질(silica, metal oxide, zeolite 등)과 유기물질(oil, surfactant, fullerene, rubbery polymer 등)을 첨가하는 물리적 방법들이 이용될 수 있다 [20][21][22][23][24]. 그러나 T. C. Merkel 등은 PTMSP에 silica를 첨가하여 복합막을 제조한 후 이 복합막에 대한 기체분리 특성을 보고하였는데 silica의 함량이 증가하면 n-C4H10의 기체투과도는 증가하나 Knudsen 확산의 영향을 받아 선택도(C4H10/CH4)는 감소한다고 보고하였다 [25].…”

Section: Askari 등[12]과 C Zhang 등[4]은 고분자에 Zif-8을 도입시켜 복합막unclassified

Gas Permeation Properties of PTMSP-ZIF Composite Membrane

Lee¹,

Hong

2015

Applied Chemistry for Engineering

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PTMSP-ZIF composite membranes were prepared by the addition of zeolitic imidazolate framework (ZIF-8) into poly (1-trimethylsilyl-1-propyne) (PTMSP) having high gas permeability to improve trade-off relationship of the polymer membrane. PTMSP-ZIF composite membranes were prepared with different amounts of ZIF-8; 0, 5, 10, 20, 30 and 40 wt%. Gas permeation properties for H2, N2, CO2, and CH4 were investigated by increasing the amount of ZIF-8 in the PTMSP. The gas permeability of PTMSP-ZIF composite membranes within 5∼30 wt% of ZIF-8 contents increased as ZIF-8 contents went up and decreased thereafter. The gas permeability for CO2 showed the maximum value of 76080 barrer at 30 wt% of ZIF-8 content and PTMSP-ZIF composite membrane containing 20 wt% of ZIF-8 content had the highest selectivity (CO2/N2) with the value of 8.2. The selectivity (H2/N2) and selectivity (CO2/CH4) were almost the same as PTMSP in the range 10∼40 wt% of the ZIF-8. Overall, PTMSP-ZIF composite membranes resulted in maintained selectivity and increased permeability compared to those of PTMSP membranes. Keywords: PTMSP, ZIF-8, permeability, selectivity

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Novel PTMSP-based membranes containing elastomeric fillers: Enhanced 1-butanol/water pervaporation selectivity and permeability

Cited by 65 publications

References 35 publications

Butanol vapor adsorption behavior on active carbons and zeolite crystal

Butanol vapor adsorption behavior on active carbons and zeolite crystal

Selective removal of butanol from aqueous solution by pervaporation with a PIM-1 membrane and membrane aging

Gas Permeation Properties of PTMSP-ZIF Composite Membrane

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