Enhanced pervaporation performance of MIL-101 (Cr) filled polysiloxane hybrid membranes in desulfurization of model gasoline

Yu, Sifan; Pan, Fusheng; Ding, He; Jiang, Zhongyi; Wang, Boyu; Li, Zhuoxin; Cao, Xingzhong

doi:10.1016/j.ces.2014.11.058

Cited by 75 publications

(19 citation statements)

References 63 publications

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“…1c) 33 . Further, the presence of bands at 1016 cm −1 (assigned to in-plane bending vibration of C-H on the benzene ring), 884 cm −1 (assigned to out-of-plane bending vibration of C-H on the benzene ring) and 745 cm −1 (assigned to deviational vibration of carboxylate groups) are consistent with the literature reports 34,35 .…”

Section: Resultssupporting

confidence: 91%

In situ casting of rice husk ash in metal organic frameworks induces enhanced CO2 capture performance

Panda

Saini

Kumar

et al. 2020

Sci Rep

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Incorporation of rice-husk-ash (RHA), an agricultural waste, in situ during the synthesis of MIL-101(Cr) resulted in a significant improvement in the CO2 adsorption properties over the synthesized RHA-MIL-101(Cr). The newly synthesized RHA-MIL-101(Cr) composite exhibited an enhancement of 14–27% in CO2 adsorption capacity as compared to MIL-101(Cr) at 25 °C and 1 bar. The content of RHA incorporated in RHA-MIL-101(Cr) fine tuned the CO2 capture performance to achieve high working capacity (0.54 mmol g−1), high purity (78%), superior CO2/N2 selectivity (18) and low isosteric heat of adsorption (20–30 kJ mol−1). The observed superior CO2 adsorption performance of RHA-MIL-101(Cr) is attributed to the fine tuning of textural characteristics—enhancement of 12–27% in BET surface area, 12–33% in total pore volume and 18–30% in micropore volume—upon incorporation of RHA in MIL-101(Cr).

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Section: Resultssupporting

confidence: 91%

In situ casting of rice husk ash in metal organic frameworks induces enhanced CO2 capture performance

Panda

Saini

Kumar

et al. 2020

Sci Rep

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“…Whereas for the methanol flux, it shows a maximum flux at around 50 wt.% as shown in Figure b, because many factors that affect the methanol flux contradict each other. As shown in Figure , the driving force for methanol shows a decreasing trend with the increasing feed methyl acetate concentration, leading to a decrease in the methanol flux, whereas membrane swelling will favor the transportation of methanol molecules through the membrane because of smaller methanol molecules, resulting in higher flux than the methanol flux obtained by a membrane without swelling phenomenon . However, as methyl acetate concentration increases further, sorption affinity quickly rules against methanol permeance capability.…”

Section: Resultsmentioning

confidence: 97%

Pervaporative separation of methyl acetate–methanol azeotropic mixture using high‐performance polydimethylsiloxane/ceramic composite membrane

Zong

Zhou

et al. 2019

Asia-Pacific J Chem Eng

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Methyl acetate is a very important green solvent, which is often produced by esterification using excess methanol as one of the reagents. Therefore, costefficient separation of the methyl acetate/methanol mixture is important. However, the formation of a methanol/methyl acetate azeotrope at atmospheric pressure results in high energy consumption for their separation using distillation such as extractive distillation. In order to reduce the energy consumption, pervaporation (PV) was used to replace the distillation in this study. Two membranes, polydimethylsiloxane and polyoctylmethylsiloxane, were first compared in the PV separation of the methyl acetate/methanol mixture. Then the effects of different operating parameters such as temperature, feed flow rate, permeate pressure, and so on were investigated. Total flux was up to 100 kg/(m 2 ·hr) at 50°C, whereas the separation factor ranges from 1.2 to 5.0.Results showed that the methyl acetate/methanol azeotrope could be broken in the studied concentration range and high flux could be obtained. Furthermore, the change of activation energy with feed methyl acetate concentration and membrane thickness with temperature was investigated. To demonstrate the potential of the industrial applications, the stability in separation of 32 wt.% methyl acetate-methanol mixtures for 15 days was investigated. ORCIDWanqin Jin https://orcid.org/0000-0001-8103-4883 FIGURE 15 Membrane stability in the PV of 32 wt.% methyl acetate-methanol mixture at 25°C FIGURE 14Effects of downstream pressure on separation factor and total flux at 20°C and a fixed flow rate of 1,000 ml/min 10 of 12 LI ET AL.

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“…As shown in Figure 2a, the vibration of O–H leads to the peak at 3415 cm −1 appearing in the infrared (IR) spectrum. The two peaks observed at 1627 cm −1 and 1399 cm −1 can be attributed to symmetric carbonyl stretching vibrations [29]. The vibration of Cr–O causes a deep peak at 578 cm −1 [30].…”

Section: Resultsmentioning

confidence: 99%

Fabrication of Composite Beads Based on Calcium Alginate and Tetraethylenepentamine-Functionalized MIL-101 for Adsorption of Pb(II) from Aqueous Solutions

et al. 2018

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In this work, a tetraethylenepentamine (TEPA)-grafted metal-organic framework material (MIL-101) was synthesized. The introduction of TEPA increased the abundance of functional groups on the MIL-101. As a powdery adsorbent, MIL-101-TEPA can be difficult to separate. In order to solve this problem, we combined MIL-101-TEPA with sodium alginate (SA) and injected the mixture into a CaCl 2 solution to solidify the powder into beads with a particle size of 3 mm. The easily recovered adsorbent was applied to the adsorption of Pb(II) from water. The structure and characterization of the adsorbent were investigated through scanning electron microscope (SEM), Fourier-transform infrared spectroscopy (FTIR), X-Ray diffraction (XRD), thermogravimetric analysis (TGA), and X-ray photoelectron spectroscopy (XPS). We also optimized the adsorption conditions. The results of the study showed that the adsorption process was chemisorptive and endothermic in nature. The maximum adsorption capacity of the composite beads was 558.6 mg/g. Meanwhile MIL-101-TEPA@CA showed good repeatable utilization.

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Enhanced pervaporation performance of MIL-101 (Cr) filled polysiloxane hybrid membranes in desulfurization of model gasoline

Cited by 75 publications

References 63 publications

In situ casting of rice husk ash in metal organic frameworks induces enhanced CO2 capture performance

In situ casting of rice husk ash in metal organic frameworks induces enhanced CO2 capture performance

Pervaporative separation of methyl acetate–methanol azeotropic mixture using high‐performance polydimethylsiloxane/ceramic composite membrane

Fabrication of Composite Beads Based on Calcium Alginate and Tetraethylenepentamine-Functionalized MIL-101 for Adsorption of Pb(II) from Aqueous Solutions

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