Results 211 to 220 of about 12,466,864 (267)

Electrochemical Hydrogenation, Hydrogenolysis, and Dehydrogenation for Reductive and Oxidative Biomass Upgrading Using 5-Hydroxymethylfurfural as a Model System

ACS Catalysis, 2022
. For oxidative upgrading, partial oxidation of biomass intermediates to molecules that have greater value than the starting molecules while avoiding their complete oxidation to CO2 is needed. Since most biomass intermediates contain multiple alcohol and
Michael T. Bender, Xin Yuan, M. Goetz, Kyoung-Shin Choi   +3 more
semanticscholar   +1 more source

Ultrathin layered double hydroxides nanosheets array towards efficient electrooxidation of 5-hydroxymethylfurfural coupled with hydrogen generation

Applied Catalysis B: Environmental, 2021
Electrochemical organic oxidation into commodity products coupled with hydrogen evolution in aqueous media serves as a promising formulation for harvesting both value-added chemicals and clean energy.
Yingjie Song, Zhenhua Li, Kui Fan, Zheng Ren, Wenfu Xie, Yusen Yang, Mingfei Shao, Min Wei   +7 more
semanticscholar   +1 more source

Levels Of 5-hydroxymethylfurfural in dextrose injection

American Journal of Health-System Pharmacy, 1977
The levels of the degradation product, 5-hydroxymethylfurfural (5-HMF), in Dextrose Injection USP were determined by spectrophotometry. A freshly prepared solution of dextrose (1 g/2 ml) had a 5-HMF level of 0.10 mug/ml. The level in 50% dextrose injection, within 24 hours of manufacturing, was 0.72 mug/ml. The level of 5-HMF in 50% dextrose injection,
B S, Murty, J N, Kapoor, F X, Smith
openaire   +2 more sources

Parameters affecting 5-hydroxymethylfurfural exposure from beer

Food Additives & Contaminants: Part A, 2018
5-Hydroxymethylfurfural (HMF) is generated during food and beverage heating processes and/or storage. Its daily intake, estimated as 4-10 mg day-1, is several orders of magnitude higher than other process contaminants. Beer can be of relevance to the evaluation of HMF exposure; however, the information concerning its occurrence in different types of ...
Viegas, Olga, Prucha, M, Gokmen, V, Ferreira, IMPLVO   +3 more
openaire   +3 more sources

An Overall Reaction Integrated with Highly Selective Oxidation of 5‐Hydroxymethylfurfural and Efficient Hydrogen Evolution

Advanced Functional Materials, 2021
Thermodynamically favorable electrooxidation reactions of biomass derivatives integrated with hydrogen evolution reaction (HER) can simultaneously provide value‐added chemicals and hydrogen, and eventually meeting the need for clean and sustainable ...
Yanan Xie, Zhaoyu Zhou, N. Yang, Guohua Zhao   +3 more
semanticscholar   +1 more source

Degradation of 5-hydroxymethylfurfural during yeast fermentation

Food Additives & Contaminants: Part A, 2011
5-Hydroxymethyl furfural (HMF) may occur in malt in high quantities depending on roasting conditions. However, the HMF content of different types of beers is relatively low, indicating its potential for degradation during fermentation. This study investigates the degradation kinetics of HMF in wort during fermentation by Saccharomyces cerevisiae.
Halise Gül, Akıllıoglu, Burçe Ataç, Mogol, Vural, Gökmen   +2 more
openaire   +2 more sources

Fluorometric measurement of furfural and 5-hydroxymethylfurfural

Analytical Biochemistry, 1982
Abstract Zine(II) forms highly fluorescent chelates with the aroyl hydrazones of furfural and 5-hydroxymethylfurfural, with the latter being more fluorescent than the former. The choice of aromatic acid hydrazide (aroyl hydrazine) as analytical reagents for furfurals was examined; 4-toluenesulfonic acid hydrazine was the most sensitive reagent ...
T A, Walmsley, M, Lever
openaire   +2 more sources

CoSe2@NiSe‐CoSe2 Heterojunction for Enhanced Electrocatalytic 5‐Hydroxymethylfurfural Oxidation Coupled with Hydrogen Evolution

Advanced Functional Materials
Electrochemical 5‐hydroxymethylfurfural oxidation reaction (HMFOR) offers a promising approach to producing valuable chemicals and facilitating coupled H2 production.
Shuai Liu, Wenting Cai, Mengmeng Jin, Tongxue Zhang, Zhi‐Wang Zhang, Qingzhao Liu, Xijun Liu, Xubin Zhang, Fumin Wang   +8 more
semanticscholar   +1 more source

Electrocatalytic Hydrogenation of 5‐Hydroxymethylfurfural in Acidic Solution

ChemSusChem, 2015
AbstractElectrocatalytic hydrogenation of 5‐hydroxymethylfurfural (HMF) is studied on solid metal electrodes in acidic solution (0.5 M H2SO4) by correlating voltammetry with on‐line HPLC product analysis. Three soluble products from HMF hydrogenation are distinguished: 2,5‐dihydroxymethylfuran (DHMF), 2,5‐dihydroxymethyltetrahydrofuran (DHMTHF), and 2 ...
Kwon, Y., Birdja, Y.Y., Raoufmoghaddam, S., Koper, M.T.M.   +3 more
openaire   +4 more sources

5‐Hydroxymethylfurfural and its Downstream Chemicals: A Review of Catalytic Routes

Advances in Materials
Biomass assumes an increasingly vital role in the realm of renewable energy and sustainable development due to its abundant availability, renewability, and minimal environmental impact.
Chunlin Chen, Mingxin Lv, Hualei Hu, Liyuan Huai, Bin Zhu, Shilin Fan, Qiuge Wang, Jian Zhang   +7 more
semanticscholar   +1 more source