Synthesis of manganese oxide supported on mesoporous titanium oxide: Influence of the block copolymer

Schmit, F.; Bois, Laurence; Chiriac, Rodica; Toche, François; Chassagneux, Fernand; Бессон, М.; Descorme, C.; Khrouz, Lhoussain

doi:10.1016/j.jssc.2014.10.010

Cited by 4 publications

(2 citation statements)

References 73 publications

(82 reference statements)

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“…Sol-gel methods gives possibility to introduce doping elements [11][12][13][14] or their combination simultaneously [15], to prepare composite type TiO 2 -based materials [16,17]. Sol-gel method is a possible way to obtain coatings or nanocoatings [18], porous films [19] or ordered mesoporous structures [20,21].…”

Section: Introductionmentioning

confidence: 99%

PtOx-SnOx-TiO2 catalyst system for methanol photocatalytic reforming: Influence of cocatalysts on the hydrogen production

et al. 2018

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Abstract:Effects of modification of PtO x -TiO 2 photocatalysts by tin were elucidated by exploring relationships between the structural properties of variously prepared tin-loaded catalysts and their catalytic activity in methanol photocatalytic reforming. Tin free and amorphous tinoxide decorated TiO 2 samples were prepared by sol-gel method from titanium-isopropoxide.In other approach, Sn was loaded onto the sol-gel prepared TiO 2 by impregnation followed by calcination. Pt was introduced by impregnation followed by either reduction in H 2 at 400 o C or calcination at 300 o C. TEM, XRD and Raman spectroscopic measurements proved that TiO 2 existed in the form of aggregates of polycrystalline anatase with primary particle size of 15-20 nm in each of the samples. Photocatalytic hydrogen production was influenced by the combined effect of many parameters. Both the presence of Sn and the way of Pt co-catalyst formation played important role in the activity of these photocatalysts. The Sn introduction by both sol-gel method and impregnation clearly enhanced the photocatalytic activity.

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Section: Introductionmentioning

confidence: 99%

PtOx-SnOx-TiO2 catalyst system for methanol photocatalytic reforming: Influence of cocatalysts on the hydrogen production

et al. 2018

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“…Among the available porous materials use for catalysis, mesoporous materials have attracted growing interest, owing to their fascinating properties such as tunable large pore sizes, large pore volumes, alternative pore shapes, high surface areas and controllable framework compositions (Feinle et al, 2015;Schmit et al, 2015;Yu et al, 2015). According to International Union of Pure and Applied Chemistry (IUPAC), mesoporous materials are materials possessing pore dimensions between 2 to 50 nm, that is between micro-pores and macropores in size.…”

Section: Mesoporous Catalyst In the Transesterification Reactionmentioning

confidence: 99%

Synthesis of mesoporous calcium titanate catalyst for transesterification of used cooking oil: A review of the synthesized potential

Yahya¹,

Ngadi²

2020

Int. j. adv. appl. sci.

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Biodiesel is a promising alternative for conventional diesel fuel due to the unsustainable feature of the resources and unstable price of the fuels. However, the production cost is higher compared to the conventional ones and is significantly contributed from the feedstock. Realizing that a large portion of used cooking oil (UCO) is generated daily, this review aims to investigate and explore the production of biodiesel from UCO. In the production reaction process, undoubtedly, the catalyst plays an important role. It has been shown that calcium oxide (CaO) is one of the best heterogeneous basic catalysts in the transesterification reaction for biodiesel production. However, the catalyst has a low surface area which restricts the active basic sites to disperse on the catalyst surface. Moreover, CaO catalyst faces leaching problem, poor stability, and porosity which hinder its catalytic activity and reusability. Therefore, in this study, it is aimed to review the potential of titanium as a support catalyst to modify CaO supported titanium with a mesoporous structure (mesoporous calcium titanate) by a sol-gelhydrothermal method to overcome the limitations of CaO catalyst.

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Manganese oxidation states repartition in a channel-like mesoporous zirconium oxide

et al. 2020

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Here, we present a mesoporous mixed manganese zirconium oxide (MnZr) synthesized by evaporation induced self-assembly (EISA) method involving a block copolymer self-assembly method. The MnZr oxide has been fully characterized by X-ray diffraction, transmission electronic microscopy, analytical electronic tomography, nitrogen adsorption/desorption isotherms, thermogravimetric analysis, X-ray photoelectron spectroscopy and electronic paramagnetic resonance. Electronic tomography analysis reveals that a mesoporous solid solution MnZr was successfully obtained by this way, with a homogeneous dispersion of Mn. X-ray diffraction, X-ray photoelectron spectroscopy, thermal analysis and electronic paramagnetic resonance inform about the manganese oxidation states present (II, III and IV) and their location within the sample.

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Synthesis of manganese oxide supported on mesoporous titanium oxide: Influence of the block copolymer

Cited by 4 publications

References 73 publications

PtOx-SnOx-TiO2 catalyst system for methanol photocatalytic reforming: Influence of cocatalysts on the hydrogen production

PtOx-SnOx-TiO2 catalyst system for methanol photocatalytic reforming: Influence of cocatalysts on the hydrogen production

Synthesis of mesoporous calcium titanate catalyst for transesterification of used cooking oil: A review of the synthesized potential

Manganese oxidation states repartition in a channel-like mesoporous zirconium oxide

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