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Utilization of waste straw and husks from ... - ScienceDirect

Utilization of waste straw and husks from ... - ScienceDirect

Aug 01, 2020 1. Introduction1.1. Rice production and waste biomass. Rice is the staple food for much of the world's population, especially in Asia and Africa, but its annual production generates huge quantities of straw (estimated as ∼8 10 11 kg by Domnguez-Escrib and Porcar, 2010) and husks (∼1.5 10 11 kg by Singh, 2018).Currently, only ∼20% of rice straw is used for …

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Carbon quantum dots: synthesis properties and ...

Carbon quantum dots: synthesis properties and ...

Carbon quantum dots (CQDs, C-dots or CDs), which are generally small carbon nanoparticles (less than 10 nm in size) with various unique properties, have found wide use in more and more fields during the last few years. In this feature article, we describe the recent progress in the field of CQDs, focusing on JMC C Top Picks collection: The many faces of carbon 2014 Journal of …

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Dynamic structural evolution of iron catalysts involving ...

Dynamic structural evolution of iron catalysts involving ...

Feb 04, 2022 Nanoscale metallic iron and iron carbide are easily oxidized with exposure to air, which brings uncertainty to the characterizations. The phase transformation and surface reconstruction of iron carbide occur during CO hydrogenation [Fischer-Tropsch synthesis (FTS)] (15, 16), which possibly also occur during CO 2 hydrogenation, given that the two reactions …

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Review on Template Removal Techniques for Synthesis of ...

Review on Template Removal Techniques for Synthesis of ...

Feb 19, 2022 Wang et al. used the SDBD reactor to eliminate the P123 copolymer from SBA-15. The FT-IR spectra of as-synthesis SBA-15, SBA-15-C, and SBA-15-DBD are illustrated in Figure 10(b). Normally, the aliphatic stretching and bending vibrations are observed at wavenumbers between 2950 and 2840 cm –1 and 1500–1350 cm –1, respectively.

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Hydrophobic zeolite modification for in situ peroxide ...

Hydrophobic zeolite modification for in situ peroxide ...

Jan 10, 2020 The enrichment efficacy is the percentage of H 2 O 2 in zeolite crystals to the total amount of H 2 O 2 in the reactor. Reaction conditions for H 2 O 2 synthesis: 5.6 g of MeOH, 4.4 g of H 2 O, 30 min, 0C, 10 mg of catalyst, 4.0 MPa of feed gas with 5% H 2 /10% O 2 /45% Ar/40% He, and 1200 rpm.

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Nanoparticle synthesis assisted by machine learning ...

Nanoparticle synthesis assisted by machine learning ...

Jul 13, 2021 Nanoparticle synthesis has a large design space for reaction conditions (for example, precursor, ligand and solvent selection, reagent concentrations, temperature, reaction time, reactor geometry ...

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Review of Research on Template Methods in Preparation of ...

Review of Research on Template Methods in Preparation of ...

Jul 25, 2016 The nanomaterials have been widely used in various fields, such as photonics, catalysis, and adsorption, because of their unique physical and chemical properties. Therefore, their production methods are of utmost importance. Compared with traditional synthetic methods, the template method can effectively control the morphology, particle size, and structure during …

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Greenhouse-inspired supra-photothermal CO2 catalysis ...

Greenhouse-inspired supra-photothermal CO2 catalysis ...

Jul 26, 2021 Ni(OH) 2 nanoplates were firstly synthesized through a hydrothermal method. In a typical synthesis, 0.117 g of Ni(NO 3) 2 6H 2 O and 200 mg of PVP were dissolved in 25 ml of ultrapure water ...

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Scale-Up of a Heterogeneous Photocatalytic Degradation ...

Scale-Up of a Heterogeneous Photocatalytic Degradation ...

Many chemical reactions contain heterogeneous reagents, products, byproducts, or catalysts, making their transposition from batch to continuous-flow processing challenging. Herein, we report the use of a photochemical rotor–stator spinning disk reactor (pRS-SDR) that can handle and scale solid-containing photochemical reaction conditions in flow. Its ability to handle slurries …

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Chinese Journal of Chemical Engineering

Chinese Journal of Chemical Engineering

MoS 2 /NiS 2 and WS 2 /NiS 2 p-p heterojunctions are constructed via a simple solid-state synthesis strategy for boosting the oxygen evolution reaction (OER). Importantly, the difference of energy levels can induce the formation of the well-designed built-in electric field and lead to local charge redistribution at the heterointerface of MoS 2 /NiS 2 and WS 2 /NiS 2, thus …

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Serpentinite - Wikipedia

Serpentinite - Wikipedia

Serpentinite is a rock composed of one or more serpentine group minerals, the name originating from the similarity of the texture of the rock to that of the skin of a snake. Minerals in this group, which are rich in magnesium and water, light to dark green, greasy looking and slippery feeling, are formed by serpentinization, a hydration and metamorphic transformation of ultramafic rock …

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Surfactant-assisted preparation of Mo-Co-K sulfide ...

Surfactant-assisted preparation of Mo-Co-K sulfide ...

Synthesis and characterization of flowerlike MoS 2 nanostructures through CTAB-assisted hydrothermal process Mater. Lett. , 86 ( 2012 ) , pp. 9 - 12 , 10.1016/j.matlet.2012.07.014

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Development and Recent Progress on Ammonia Synthesis ...

Development and Recent Progress on Ammonia Synthesis ...

They synthesized the support material using two different methods, the solid phase reaction method and the hydrothermal method. [7, 96] The temperature at which water and hydroxyl groups were removed during the hydrothermal synthesis was varied between 873 and 1273 K to find out how this affected the surface area and catalytic performance.

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