Synthesis of silicalite-1 membranes with high ethanol permeation in ultradilute solution containing fluoride

Xiaoliang Zhang; Meihua Zhu; Rongfei Zhou; Xiangshu Chen; Hidetoshi Kita

doi:10.1016/j.seppur.2011.08.009

Synthesis of silicalite-1 membranes with high ethanol permeation in ultradilute solution containing fluoride

Xiaoliang Zhang, Meihua Zhu, Rongfei Zhou, Xiangshu Chen, Hidetoshi Kita

Research output: Contribution to journal › Article › peer-review

36 Scopus citations

Abstract

Defect free silicalite-1 membranes were successfully prepared on the surface of tubular mullite supports in ultradilute solution containing fluoride by hydrothermal synthesis. The typical molar composition of synthesis solutions was 1SiO₂:0.2TPABr:0.2TPAOH:0.15NH₄F:800H₂O. The results of X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM) of zeolite membranes were confirmed that the outer surface of support was fully covered with a randomly oriented and intergrown silicalite zeolite layer. The membrane prepared at 180 °C for 20 h showed high ethanol permselectivity for separation of ethanol/water mixtures. The flux and separation factor are achieved to 2.85 kg m^-2 h^-1 and 60 for 5 wt.% ethanol/water mixture at 60 °C, respectively.

Original language	English
Pages (from-to)	480-484
Number of pages	5
Journal	Separation and Purification Technology
Volume	81
Issue number	3
DOIs	https://doi.org/10.1016/j.seppur.2011.08.009
State	Published - 10 Oct 2011
Externally published	Yes

Keywords

Ethanol/water mixture separation
Fluoride
Hydrothermal synthesis
Silicalite membrane
Ultradilute solution

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10.1016/j.seppur.2011.08.009

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title = "Synthesis of silicalite-1 membranes with high ethanol permeation in ultradilute solution containing fluoride",

abstract = "Defect free silicalite-1 membranes were successfully prepared on the surface of tubular mullite supports in ultradilute solution containing fluoride by hydrothermal synthesis. The typical molar composition of synthesis solutions was 1SiO2:0.2TPABr:0.2TPAOH:0.15NH4F:800H2O. The results of X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM) of zeolite membranes were confirmed that the outer surface of support was fully covered with a randomly oriented and intergrown silicalite zeolite layer. The membrane prepared at 180 °C for 20 h showed high ethanol permselectivity for separation of ethanol/water mixtures. The flux and separation factor are achieved to 2.85 kg m-2 h-1 and 60 for 5 wt.% ethanol/water mixture at 60 °C, respectively.",

keywords = "Ethanol/water mixture separation, Fluoride, Hydrothermal synthesis, Silicalite membrane, Ultradilute solution",

author = "Xiaoliang Zhang and Meihua Zhu and Rongfei Zhou and Xiangshu Chen and Hidetoshi Kita",

year = "2011",

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T1 - Synthesis of silicalite-1 membranes with high ethanol permeation in ultradilute solution containing fluoride

AU - Zhang, Xiaoliang

AU - Zhu, Meihua

AU - Zhou, Rongfei

AU - Chen, Xiangshu

AU - Kita, Hidetoshi

PY - 2011/10/10

Y1 - 2011/10/10

N2 - Defect free silicalite-1 membranes were successfully prepared on the surface of tubular mullite supports in ultradilute solution containing fluoride by hydrothermal synthesis. The typical molar composition of synthesis solutions was 1SiO2:0.2TPABr:0.2TPAOH:0.15NH4F:800H2O. The results of X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM) of zeolite membranes were confirmed that the outer surface of support was fully covered with a randomly oriented and intergrown silicalite zeolite layer. The membrane prepared at 180 °C for 20 h showed high ethanol permselectivity for separation of ethanol/water mixtures. The flux and separation factor are achieved to 2.85 kg m-2 h-1 and 60 for 5 wt.% ethanol/water mixture at 60 °C, respectively.

AB - Defect free silicalite-1 membranes were successfully prepared on the surface of tubular mullite supports in ultradilute solution containing fluoride by hydrothermal synthesis. The typical molar composition of synthesis solutions was 1SiO2:0.2TPABr:0.2TPAOH:0.15NH4F:800H2O. The results of X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM) of zeolite membranes were confirmed that the outer surface of support was fully covered with a randomly oriented and intergrown silicalite zeolite layer. The membrane prepared at 180 °C for 20 h showed high ethanol permselectivity for separation of ethanol/water mixtures. The flux and separation factor are achieved to 2.85 kg m-2 h-1 and 60 for 5 wt.% ethanol/water mixture at 60 °C, respectively.

KW - Ethanol/water mixture separation

KW - Fluoride

KW - Hydrothermal synthesis

KW - Silicalite membrane

KW - Ultradilute solution

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U2 - 10.1016/j.seppur.2011.08.009

DO - 10.1016/j.seppur.2011.08.009

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VL - 81

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JO - Separation and Purification Technology

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ER -

Synthesis of silicalite-1 membranes with high ethanol permeation in ultradilute solution containing fluoride

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Keywords

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