Results 71 to 80 of about 12,466,864 (267)

A hydrothermally stable Ytterbium metal-organic framework as a bifunctional solid-acid catalyst for glucose conversion [PDF]

open access: yes, 2019
Yb6(BDC)7(OH)4(H2O)4 contains both bridging hydroxyls and metal-coordinated waters, possessing Brønsted and Lewis acid sites. The material crystallises from water at 200C.
Burnett, David L.   +8 more
core   +1 more source

5-Hydroxymethylfurfural (HMF) formation during subcritical water extraction [PDF]

open access: yesFood Science and Biotechnology, 2018
The aim of this study was to investigate the effect of material type (artichoke leave, lemon peel, flaxseed meal), extraction temperature (50, 100, 120, 140, 160, 180, 200 °C) and static extraction time (5, 15, 30, 45 min) on 5-hydroxymethylfurfural (5-HMF) formation during subcritical water extraction.
openaire   +2 more sources

Advances in Selective Electrochemical Oxidation of 5‐Hydroxymethylfurfural to Produce High‐Value Chemicals

open access: yesAdvancement of science, 2022
The conversion of biomass is a favorable alternative to the fossil energy route to solve the energy crisis and environmental pollution. As one of the most versatile platform compounds, 5‐hydroxymethylfural (HMF) can be transformed to various value‐added ...
Lei Guo   +7 more
semanticscholar   +1 more source

Oxophilicity‐Driven Potential Window Engineering Enables Scalable and Low‐Emission Paired Electrosynthesis on Asymmetric CuOx@Ag Platform

open access: yesCarbon and Hydrogen, EarlyView.
An asymmetric CuOx@Ag electrocatalyst platform enables paired electrochemical valorization of glycerol and 4‐nitrophenol, while effectively decoupling both half‐reactions from OER and HER. Ag‐mediated surface engineering expands the potential window and boosts reaction selectivity, achieving > 90% Faradaic efficiencies at both electrodes.
Xulai Gong   +14 more
wiley   +1 more source

Effect of novel sequential soaking treatments on Maillard reaction products in potato and alternative vegetable crisps

open access: yesHeliyon, 2021
Frying leads to the formation of numerous food contaminants through the Maillard reaction (MR). In this paper, commercially available vegetable crisps were analysed for and established to have high levels of acrylamide. Consequentially, the capability of
Moira Ledbetter   +6 more
doaj   +1 more source

Direct catalytic conversion of cellulose to 5-hydroxymethylfurfural using ionic liquids

open access: yes, 2016
Cellulose is the single largest component of lignocellulosic biomass and is an attractive feedstock for a wide variety of renewable platform chemicals and biofuels, providing an alternative to petrochemicals and petrofuels.
Brandt, A   +4 more
core   +1 more source

5-Hydroxymethylfurfural (HMF) levels in honey and other food products: effects on bees and human health

open access: yesChemistry Central Journal, 2018
An organic compound known as 5-hydroxymethylfurfural (HMF) is formed from reducing sugars in honey and various processed foods in acidic environments when they are heated through the Maillard reaction. In addition to processing, storage conditions affect
Ummay Mahfuza Shapla   +4 more
semanticscholar   +1 more source

Selective Oxidation Strategies for Cost‐Efficient Green Hydrogen Production via Hybrid Water Electrolysis

open access: yesCarbon Energy, EarlyView.
Hybrid water electrolysis has emerged as a promising alternative to conventional electrolysis for sustainable hydrogen production. The economic potential of replacing water oxidation with organic substrates is assessed. For each substrate, representative electrocatalysts and mechanistic insights are reviewed to identify design principles for optimized ...
Conor Brennan‐Pollak   +12 more
wiley   +1 more source

Production of 5-Hydroxymethylfurfural from Glucose Using a Combination of Lewis and Brønsted Acid Catalysts in Water in a Biphasic Reactor with an Alkylphenol Solvent [PDF]

open access: yes, 2012
We report the catalytic conversion of glucose in high yields (62%) to 5-hydroxymethylfurfural (HMF), a versatile platform chemical. The reaction system consists of a Lewis acid metal chloride (e.g., AlCl 3) and a Bronsted acid (HCl) in a biphasic reactor
Dumesic, James   +5 more
core   +3 more sources

High‐Efficiency S‐Scheme Bi4O5IBr/Bi5O7I0.7Br0.3 Double Solid Solution Heterojunction Photocatalyst for Levofloxacin Degradation via Optimized Carrier Dynamics

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Particulate Bi4O5 IBr anchored on rod‐like Bi5O7I0.7Br0.3 forms an S‐scheme heterojunction that facilitates charge separation via a built‐in electric field, leading to exceptional photocatalytic activity and stability for LEV degradation. The remediation of antibiotic‐polluted water demands advanced photocatalytic systems with high efficiency and ...
Yangwen Xia   +4 more
wiley   +1 more source

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