Facile synthesis of zirconia doped hybrid organic inorganic silica membranes

Hove, Marcel ten; Nijmeijer, Arian; Winnubst, Louis

doi:10.1016/j.seppur.2014.12.033

Cited by 43 publications

(10 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Till now, Pd, Zr, Cr, Co, Al, Ag, Nb, Ta, La and Y have been incorporated into organosilica sols to prepare a hybrid organosilica membrane [27,81,82,83,84,85]. Before the organosilica membranes were extensively investigated, metals such as Zr, Ti, Pd and Co were introduced into pure silica membranes derived by TEOS to enhance the affinity with gas or water and improve hydrothermal stability [4,86,87].…”

Section: Hybrid Organosilica Membranementioning

confidence: 99%

“…Metal salts and oxide are commonly used in the preparation of hybrid metal-doped organosilica membranes. Ten Hove et al investigated the effect of zirconia concentrations when doped into BTESE-derived silica membranes (molar ratio Si/Zr = 1/0.1), and found that 0.2 mol/L silica-zirconia membrane showed permselectivities for H 2 /CO 2 , H 2 /N 2 and H 2 /CH 4 that were improved from 4 to 16, 12 to 100, and 12 to 400, respectively, compared with pure BTESE membranes [82]. A larger content of Zr in the BTESE membranes (Si/Zr = 1/0.34) reported by Qi’s groups exhibited a very high selectivity of H 2 /CH 4 over 1150 when tested at 200 °C [91].…”

Section: Hybrid Organosilica Membranementioning

confidence: 99%

See 1 more Smart Citation

Organosilica-Based Membranes in Gas and Liquid-Phase Separation

Ren

Tsuru

2019

Membranes

View full text Add to dashboard Cite

Organosilica membranes are a type of novel materials derived from organoalkoxysilane precursors. These membranes have tunable networks, functional properties and excellent hydrothermal stability that allow them to maintain high levels of separation performance for extend periods of time in either a gas-phase with steam or a liquid-phase under high temperature. These attributes make them outperform pure silica membranes. In this review, types of precursors, preparation method, and synthesis factors for the construction of organosilica membranes are covered. The effects that these factors exert on characteristics and performance of these membranes are also discussed. The incorporation of metals, alkoxysilanes, or other functional materials into organosilica membranes is an effective and simple way to improve their hydrothermal stability and achieve preferable chemical properties. These hybrid organosilica membranes have demonstrated effective performance in gas and liquid-phase separation.

show abstract

Section: Hybrid Organosilica Membranementioning

confidence: 99%

Section: Hybrid Organosilica Membranementioning

confidence: 99%

Organosilica-Based Membranes in Gas and Liquid-Phase Separation

Ren

Tsuru

2019

Membranes

View full text Add to dashboard Cite

show abstract

“…In addition, other strategies, such as adding appropriate metals in the networks that partially block the pore size and/or improve the affinity of specific molecules to a membrane layer, were also proposed to enhance the gas selectivity. 23 , 24 …”

Section: Introductionmentioning

confidence: 99%

“…Prevailing methods, such as employing different types of alkylene bridging groups, , incorporating a second or third alkoxysilane precursors for co-condensation, , and controlling the sol–gel processing parameters, , had been demonstrated for effectively controlling the pore size and improving the separation performances of prepared membranes. In addition, other strategies, such as adding appropriate metals in the networks that partially block the pore size and/or improve the affinity of specific molecules to a membrane layer, were also proposed to enhance the gas selectivity. , …”

Section: Introductionmentioning

confidence: 99%

Ultrathin Reduced Graphene Oxide/Organosilica Hybrid Membrane for Gas Separation

Zhao

Zhou

Kong

et al. 2021

JACS Au

View full text Add to dashboard Cite

Here, reduced graphene oxide (r-GO) nanosheets were embedded in an organosilica network to assemble an ultrathin hybrid membrane on the tubular ceramic substrate. With the organosilica nanocompartments inside the r-GO stacks and the intensified polymerization, r-GO sheets endow the as-prepared hybrid membranes with high H 2 and CO 2 separation performance. The resulting selectivities of H 2 /CH 4 and CO 2 /CH 4 are found to be 223 and 55, respectively, together with gas permeance of approximately 2.5 × 10 –7 mol·m –2 ·s –1 ·Pa –1 for H 2 and 6.1 × 10 –8 mol·m –2 ·s –1 ·Pa –1 for CO 2 at room temperature and 0.2 MPa. To separate larger molecules from H 2 , the H 2 /C 3 H 8 and H 2 / i -C 4 H 10 selectivities are as high as 1775 and 2548, respectively. Moreover, at 150 °C and 0.2 MPa, the hybrid membrane retains high separation performances with ideal selectivities higher than 200 and 30 for H 2 /CH 4 and CO 2 /CH 4 , respectively, which are attractive for gas separation and purification of practical applications.

show abstract

“…To facilitate CO 2 transport, several papers investigated a strategy by copolymerization of amine-contained alkoxysilanes with BTESE to prepare hybrid organosilica membranes [11][12][13][14]. The pore size and affinity were tuned by the appropriate selection of material and composition.…”

Section: Introductionmentioning

confidence: 99%

Multiple Amine-Contained POSS-Functionalized Organosilica Membranes for Gas Separation

et al. 2021

View full text Add to dashboard Cite

A new polyhedral oligomeric silsesquioxane (POSS) designed with eight –(CH2)3–NH–(CH2)2–NH2 groups (PNEN) at its apexes was used as nanocomposite uploading into 1,2-bis(triethoxysilyl)ethane (BTESE)-derived organosilica to prepare mixed matrix membranes (MMMs) for gas separation. The mixtures of BTESE-PNEN were uniform with particle size of around 31 nm, which is larger than that of pure BTESE sols. The characterization of thermogravimetric (TG) and gas permeance indicates good thermal stability. A similar amine-contained material of 3-aminopropyltriethoxysilane (APTES) was doped into BTESE to prepare hybrid membranes through a copolymerized strategy as comparison. The pore size of the BTESE-PNEN membrane evaluated through a modified gas-translation model was larger than that of the BTESE-APTES hybrid membrane at the same concentration of additions, which resulted in different separation performance. The low values of Ep(CO2)-Ep(N2) and Ep(N2) for the BTESE-PNEN membrane at a low concentration of PNEN were close to those of copolymerized BTESE-APTES-related hybrid membranes, which illustrates a potential CO2 separation performance by using a mixed matrix membrane strategy with multiple amine POSS as particles.

show abstract

Facile synthesis of zirconia doped hybrid organic inorganic silica membranes

Cited by 43 publications

References 32 publications

Organosilica-Based Membranes in Gas and Liquid-Phase Separation

Organosilica-Based Membranes in Gas and Liquid-Phase Separation

Ultrathin Reduced Graphene Oxide/Organosilica Hybrid Membrane for Gas Separation

Multiple Amine-Contained POSS-Functionalized Organosilica Membranes for Gas Separation

Contact Info

Product

Resources

About