Results 51 to 60 of about 23,214 (252)
Molecules, 2023 To further our understanding of the change in association between lignin and carbohydrates after kraft pulping, isotope-labeled kraft pulp (KP) was prepared using 13C and D double-isotope-labeled wheat straw, and it was subjected to enzymatic hydrolysis ...
Hujun Niu +4 more
doaj +1 more source
Analysis of products from the oxidation of technical lignins by oxygen and H3PMo12O40 in water and aqueous methanol by size-exclusion chromatography [PDF]
, 2017 One kraft lignin and two lignosulfonates were oxidized in aqueous acidic solutions containing a polyoxometalate (POM). The degradations were carried out in H2O or MeOH/H2O mixtures in the presence of oxygen.
Nagel, Marina V. +2 more
core
Kraft lignin reaction with paraformaldehyde
Holzforschung, 2019 AbstractLignin is the second most abundant biopolymer and will be an important source for carbon-containing compounds in the future. Based on their similar phenolic structures, lignin has great potential to become a valuable substitute for phenol in phenol-formaldehyde resin adhesives. To meet this aim, the sodium hydroxide (NaOH)-catalyzed reaction of
Paananen, Hanna, Pakkanen, Tuula T
openaire +3 more sources
Zwischen Ordnung und Verwirrung: Missverständnisse in der Nomenklatur von Kohlenstoffmaterialien
Angewandte Chemie, EarlyView.Trotz der vielfältigen Einsatzmöglichkeiten von Kohlenstoffmaterialien führen uneinheitliche Terminologie und unzureichende Charakterisierung – insbesondere im Hinblick auf die Ordnung der zugrunde liegenden Graphenen – häufig zu Fehlinterpretationen. Der Artikel klärt Begriffe wie Graphit, graphitischer Kohlenstoff, nicht‐graphitischer Kohlenstoff und
Chantal Glatthaar +3 more
wiley +1 more source
Frontiers in Bioengineering and Biotechnology, 2021 The conversion of Kraft lignin in plant biomass into renewable chemicals, aiming at harvesting aromatic compounds, is a challenge process in biorefinery.
Wen-Jie Guo +7 more
doaj +1 more source
Management of the Rice Tungro Virus Vector \u3ci\u3eNephotettix virescens\u3c/i\u3e (Homoptera: Cicadellidae) with Controlled-Release Formulations of Carbofuran [PDF]
, 1984 Field trials were conducted in lowland flooded rice in the Philippines to evaluate a number of carbofuran controlled-release formulations in comparison with commercial formulations. The test formulations were based on a biodegradable matrix of pine kraft
Aquino, G. B. +4 more
core +1 more source
Protein engineering of Pseudomonas fluorescens peroxidase Dyp1B for oxidation of phenolic and polymeric lignin substrates [PDF]
, 2019 Directed evolution was applied to dye-decolourizing peroxidase Dyp1B from Pseudomonas fluorescens Pf-5, in order to enhance the activity for oxidation of phenolic and lignin substrates.
Ashley, Ben +6 more
core +2 more sources
Between Order and Confusion: Clearing up Structural Misconceptions in Carbon Materials Nomenclature
Angewandte Chemie International Edition, EarlyView.Despite the versatile use of carbon materials, inconsistent terminology and inadequate characterization – especially regarding graphene structures based on sp2‐hybridized carbon atoms – often cause confusion. This perspective clarifies terms like graphite, graphitic carbon, non‐graphitic carbon, and amorphous carbon by aligning IUPAC definitions with X‐
Chantal Glatthaar +3 more
wiley +1 more source
BioResources, 2014 Kraft pulping is one possible pretreatment for softwood to economically produce bioethanol. This work evaluates the techno-economic potential of using the kraft process for producing bioethanol from softwoods in a repurposed or co-located kraft mill ...
Shufang Wu +3 more
doaj +1 more source
A Study of the Use of Borates in Semi-Chemical Pulping [PDF]
, 1997 The purpose of this project was to identify sodium metaborate as a pulping chemical in semi-chemical pulping with soda ash. The experimental design included four digester cooks with 0%, 10%, 20%, and 40% addition of.the borate compound.
Hebner, Dan
core +1 more source