Optimisation of SBA-15 properties using Soxhlet solvent extraction for template removal

Ávila, Simone Garcia de; Silva, Luís Carlos C.; Matos, J. R.

doi:10.1016/j.micromeso.2016.07.027

Cited by 44 publications

(28 citation statements)

References 22 publications

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“…[4] However,t od ate, complete removal of templates from MCM-41 or SBA-15 through solvente xtractionh as not been possible. [5,14] This is caused by the largee nergetic driving force requiredt ob reakt he organic-inorganic interfacial interaction. Therefore, several studies have used microwave [15] or other irradiation [16] and supercritical [17] or refluxing solvents [18,19] to achieve complete extraction of templates and template recycling after elution.…”

Section: Introductionmentioning

confidence: 99%

An Eco‐Friendly, Tunable and Scalable Method for Producing Porous Functional Nanomaterials Designed Using Molecular Interactions

et al. 2017

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Despite significant improvements in the synthesis of templated silica materials, post‐synthesis purification remains highly expensive and renders the materials industrially unviable. In this study this issue is addressed for porous bioinspired silica by developing a rapid room‐temperature solution method for complete extraction of organic additives. Using elemental analysis and N2 and CO2 adsorption, the ability to both purify and controllably tailor the composition, porosity and surface chemistry of bioinspired silica in a single step is demonstrated. For the first time the extraction is modelled using molecular dynamics, revealing that the removal mechanism is dominated by surface‐charge interactions. This is extended to other additive chemistry, leading to a wider applicability of the method to other materials. Finally the environmental benefits of the new method are estimated and compared with previous purification techniques, demonstrating significant improvements in sustainability.

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Section: Introductionmentioning

confidence: 99%

An Eco‐Friendly, Tunable and Scalable Method for Producing Porous Functional Nanomaterials Designed Using Molecular Interactions

et al. 2017

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“…Preferentially solubilized in the core of micelles, these molecules lead, as expected, to an increase of the pore volume but also to a modification of the porosity organization [2]. Since, resulting MCF with large spherical cell sizes up to 40 nm, 3D interconnected pore system and large pore volumes [3] have shown great potential as supports for drug molecule release [1] or for the design of heterogeneous catalysts through the incorporation of enzymes/proteins [4], metal nanoparticles [5] to name only a few. Up to now, various synthesis methods of MCF have been reported in the literature.…”

Section: Introductionmentioning

confidence: 76%

Influence of synthesis parameters of mesocellular silica foams doped by nickel on methane reforming by CO₂

et al. 2018

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Abstract-New catalysts based on Ni(0) dispersed onto mesocellular silica foams (MCF) were prepared for Dry Reforming of Methane (DRM). Different synthesis methods of MCF supports (with and without using NH 4 F or n-butanol) were tested in order to study the influence of the textural properties of the support on the catalytic performances of the catalysts. In all cases, nickel was incorporated using the double solvents method. The resulting calcined materials were characterized by N 2 sorption, X-Ray diffraction (XRD) and transmission electron microscopy. Their reducibility was tested by temperature-programmed reduction (TPR). Interestingly, particularly large specific surfaces, pores diameters and pores volumes were observed when NH 4 F was added to the synthesis gel (MCF(N) materials). The corresponding Ni-MCF(N) catalysts were shown to be the most attractive among other prepared samples with respect to their performances in DRM.

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“…KIT-6 disintesis dari campuran triblok kopolimer-butanol sebagai agen pengarah struktur menghasilkan silika mesopori tipe batang dan tabung dengan simetri kubus Ia3d [16], [7], [10], [34] CKT-1 semi heksagonal [88] CKT-2 disorder cubic [89] C-125 semi batang inner-outer [90] CMM semi sangkar pori ganda [91] CSS Seminkubus [92] CP-1 sangkar kubus [93] OMCG sangkar semi kubus [94] Ada dua macam teknik sintesis karbon mesopori yaitu cetakan padat dan cetakan lunak. Cetakan padat menggunakan padatan berpori sebagai tempat pengendapan prekursor karbon [20], [77], [78], [57], [61], [79], [80], sedangkan cetakan lunak menggunakan surfaktan sebagai agen pengarah struktur [25], [59], [67], [70], [81]- [86]. Kedua teknik tersebut menghasilkan beragam struktur karbon mesopori terutama di 25 tahun terakhir.…”

Section: Perkembangan Prekursor Karbon Mesoporiunclassified

Mesoporous Carbon in the Global World

Ulfa

2017

JKPK

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Selama 25 tahun terakhir, fokus penelitian material bergeser ke arah nanomaterial.Material berbasis karbon khususnya jenis karbon mesopori menarik perhatian banyak peneliti karena faktor keteraturan struktur dan sifat fisika-kimia yang bagus. Keterlibatan karbon mesopori cukup besar dalam dunia khususnya industri karena faktor porositas dan regularitas struktur yang baik untuk reaksi-reaksi skala makro. Dalam 25 tahun terakhir topik utama penelitian karbon mesopori fokus untuk menghasilkan material tiga dimensi yang mempu mengakomodir mekanisme reaksi yang melibatkan molekul besa dengan memperhatikan aspek preparasi, sintesis dan aplikasinya. Review ini akan mengkaji perkembangan kabon mesopori antara tahun 1999 hingga 2017. Kajian akan difokuskan pada perkembangan karbon mesopori dari sisi prekursor, metode sintesis, serta aplikasinya dalam dunia modern baik sebagai adsorben, katalis maupun material canggih lainnya.

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Optimisation of SBA-15 properties using Soxhlet solvent extraction for template removal

Cited by 44 publications

References 22 publications

An Eco‐Friendly, Tunable and Scalable Method for Producing Porous Functional Nanomaterials Designed Using Molecular Interactions

An Eco‐Friendly, Tunable and Scalable Method for Producing Porous Functional Nanomaterials Designed Using Molecular Interactions

Influence of synthesis parameters of mesocellular silica foams doped by nickel on methane reforming by CO₂

Mesoporous Carbon in the Global World

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Optimisation of SBA-15 properties using Soxhlet solvent extraction for template removal

Cited by 44 publications

References 22 publications

An Eco‐Friendly, Tunable and Scalable Method for Producing Porous Functional Nanomaterials Designed Using Molecular Interactions

An Eco‐Friendly, Tunable and Scalable Method for Producing Porous Functional Nanomaterials Designed Using Molecular Interactions

Influence of synthesis parameters of mesocellular silica foams doped by nickel on methane reforming by CO2

Mesoporous Carbon in the Global World

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Influence of synthesis parameters of mesocellular silica foams doped by nickel on methane reforming by CO₂