Results 101 to 110 of about 2,238 (210)

Oxygen delignification of kraft pulp catalysed by polyoxometalates

, 2002
A deslenhificação com oxigénio catalisada com polioxometalatos (POMs) sob condições aeróbicas constitui o tema do presente trabalho. Várias séries de POMs foram testadas como catalisadores e os parâmetros dos potênciais sistemas de deslenhificação POM/
Gaspar, Armindo Ribeiro
core  

ANALYSIS OF STRUCTURAL CHANGES OF MASSON PINE LIGNIN REACTED WITH SUPEROXIDE ANION RADICAL BY NMR SPECTROSCOPIES

BioResources, 2010
Oxygen delignification can be considered to be the most important part of TCF and ECF bleaching sequences because it allows for cleaner production of pulp.
Gang Chen, Shiyu Fu, Ruiheng Liu, Huaiyu Zhan, Yuancai Chen   +4 more
doaj  

Analysis of novel transition metals as catalysts for oxygen delignification

, 2001
grantor: University of TorontoThree catalysts, vanadyl sulfate hydrate (VS), ceric(IV) sulfate (CS), and molybdenyl acetylacetonate (MA) were studied for their effectiveness in enhancing oxygen delignification.
Ahuja, Vishal
core   +1 more source

EVALUATION OF PRE-HYDROLYZED SODA-AQ DISSOLVING PULP FROM POPULUS DELTOIDES USING AN ODED BLEACHING SEQUENCE

BioResources, 2012
In the present work, the production of dissolving pulp from fast growing 30-year-old local plantation aspen was investigated. The mill-made chips of aspen (Populus deltoides) after being pre-hydrolyzed with water at 170 ºC, were pulped with a soda-AQ ...
Mostafa Nikkhah Dafchahi,, Hossein Resalati   +1 more
doaj  

Apparent and actual delignification response in industrial oxygen-alkali delignification of birch kraft pulp

, 2003
The time-dependent behavior of material that affects the kappa number of birch kraft pulp was experimentally tested in an industrial, two-stage, oxygen-alkali delignification process. The pulps were leached, and the leached material was divided into four
Ala-Kaila, K., Li, Jiebing,, Gellerstedt, Göran,, Sevastyanova, O.   +3 more
core  

LACCASE: PROPERTIES AND APPLICATIONS

BioResources, 2009
Laccases (benzenediol:oxygen oxidoreductase, EC 1.10.3.2) are multi-copper oxidases that are widely distributed among plants, insects, and fungi.
Vernekar Madhavi, S. S. Lele
doaj  

Development of pulp fiber charge in oxygen delignification of softwood

, 2021
According to a previous study from Esteves et. al. 2020, it was found that oxygen delignification can increase the total fiber charge but does not always increase the paper strength. This study aims to investigate how fiber charge has an impact on pulp properties.
openaire   +1 more source

Optimization of Bleaching Process and Evaluation of Pulp Performance for Super-Arundo Donax Kraft Pulp. [PDF]

Polymers (Basel)
Cai Z, Ji X, Liang J, Tian Z, Zhou J.
europepmc   +1 more source

Third-Component-Regulated Choline Chloride-Monoethanolamine-Based Solvent Systems for Enhanced Valorization of Bamboo Toward Concurrent Bioethanol and Carbon Dot Production. [PDF]

Molecules
Jin S, Meng Y, Miao D, Shi C, Yang J, Shi Z, Yang H.   +6 more
europepmc   +1 more source

Na₂CO₃-assisted oxygen-alkali recyclable cellulose separation/pulping technology of straw and silicon controllable migration. [PDF]

iScience
Xu Q, Chen J, Zhang K, Li J, Zhou M, Yang G.   +5 more
europepmc   +1 more source