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Dec 13, 2021 The development of novel and efficient heterogeneous catalysts plays a crucial role in biomass utilization; insights into developing prospects of the metal/heteroatom-doped carbon catalysts in biomass hydrodeoxygenation applications are highlighted, and distinctive viewpoints on heteroatom doping mechanisms are presented in this Perspective. View the article.
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Designing a photocatalyst for hydrogen production is pivotal role in renewable energy technologies. Herein, the synthesis of nanosized NiSe 2 particles via supercritical fluid process with the short reaction time of 30 min was reported. Then, it was used as a co-catalyst over TiO 2 to improve H 2 production rate. Supercritical fluid process is an effective and alternative …
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Feb 22, 2022 Hydrogenations and hydrodeoxygenations represent two of the most important reactions in the production of both bulk and fine chemicals. Despite the wide and long use of metal-based catalysts for this reaction, there is still some uncertainty with respect to the properties governing the catalyst activity. Using the hydrogenation of benzaldehyde as a model reaction, …
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Jan 12, 2022 An unzipped carbon nanotube embedded graphene oxide membrane is reported. The multiwalled carbon nanotubes were longitudinally cut into multilayer graphene oxide nanoribbons by a modified Hummer method. They show remarkable water permeability and selectivity when this combination of graphene oxide and unzipped carbon nanotubes was …
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Lithium-sulfur batteries are among the rising rechargeable batteries due to their high energy density, theoretical capacity, and low cost. However, their large-scale application is delayed by several challenges, such as degradation due to polysulfide dissolution, low conductivity, and other restricting factors.
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Reactor was initially purged with N 2 (99.999%) for 5 min to create an oxygen-free environment. Later, the reactor was heated to the pre-determined temperature (240, 260, 280, 300, 320, and 340 C) and maintained there for desired time (0, 0.5, 1, 1.5, and 2 h). The stir kept rotating at a speed of 65 rpm to ensure the uniform of the samples.
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Tous les d c s depuis 1970, volution de l'esp rance de vie en France, par d partement, commune, pr nom et nom de famille ! Combien de temps vous reste-t …
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