Results 41 to 50 of about 23,645 (231)
Chemie und Pharmazie in die Nachhaltigkeit einbetten
Angewandte Chemie, EarlyView.Chemie und Pharmazie sind mit ihren Produkten und Prozessen grundlegend für unseren hohen Lebensstandard. Es ist wesentlich, ihre Verbindung mit der Nachhaltigkeit zu verstehen, damit sie auf nachhaltige Weise nachhaltig zur Nachhaltigkeit beitragen können.
Klaus Kümmerer
wiley +1 more source
Liquefaction o Kraft Lignin at Atmospheric Pressure
Journal of Renewable Materials, 2019 Kraft lignin was liquefied using polyethylene glycol #400 (PEG) and glycerol (G) in a weight ratio of 80/20 (w/w) and sulphuric acid (SA) as catalyst under atmospheric pressure at 160ºC. The three independent variables: reaction time (60, 80 and 100 min), percentage of lignin (15, 20 and 25%, w/w), and catalyst concentration (0, 3 and 6%, w/w), were ...
Silvia Helena Fuentes da Silva +5 more
openaire +3 more sources
Lignin Valorization for Added-Value Chemicals: Kraft Lignin versus Lignin Fractions
ChemEngineering, 2023 Lignin is a raw material that can potentially be converted into valuable compounds through depolymerization reactions in addition to its use as a polymer or material. However, the chemical recalcitrance and the heterogeneous composition and structure of lignin make it challenging to establish processes that add value to this complex aromatic biopolymer.
Carina A. E. Costa +3 more
openaire +4 more sources
Battery Energy, Volume 4, Issue 2, March 2025.Three biobased membranes are synthesized by crosslinking oxidized Kraft lignin with poly(ethylene glycol) diglycidyl ether of increasing molecular weights. After incorporation of solvated potassium salts, potassium batteries including these biobased gel polymer electrolytes are able to deliver a maximum specific capacity at 0.05 A g−1 as high as 130 ...
Giuseppe Pascuzzi +5 more
wiley +1 more source
Modification of the lignin structure during alkaline delignification of eucalyptus wood by kraft, soda-AQ, and soda-O2 cooking [PDF]
, 2015 11 páginas.-- 5 figuras.-- 4 tablas.-- 50 referencias.-- Supporting Information The general conditions for the kraft, soda-AQ, and soda-O2 alkaline cooking of eucalyptus feedstock, are shown in Table S1.
Berbís, Manuel Álvaro +9 more
core +2 more sources
Carbon Energy, EarlyView.A scalable strategy utilizing native impurities in bamboo lignin black liquor is proposed to construct a closed‐pore, rich hard carbon. Controlled impurity removal and high‐temperature reconstruction enable the conversion of open pores into abundant closed pores, thereby promoting sodium cluster storage.
Zhenbing Sun +9 more
wiley +1 more source
Process for purification of waste water produced by a Kraft process pulp and paper mill [PDF]
, 1979 The water from paper and pulp wastes obtained from a mill using the Kraft process is purified by precipitating lignins and lignin derivatives from the waste stream with quaternary ammonium compounds, removing other impurities by activated carbon produced
Humphrey, M. F.
core +1 more source
Comparison of Py-GC/FID and Wet Chemistry Analysis for Lignin Determination in Wood and Pulps from Eucalyptus globulus [PDF]
, 2013 The kraft pulps produced from heartwood and sapwood of Eucalyptus globulus at 130 degrees C, 150 degrees C, and 170 degrees C were characterized by wet chemistry (total lignin as sum of Klason and soluble lignin fractions) and pyrolysis (total lignin ...
Gominho, Jorge +3 more
core +1 more source
Chemistry – A European Journal, EarlyView.A straightforward one‐step protocol enables the synthesis of bio‐based and biologically active isochromans through the Oxa‐Pictet cyclization involving diverse aldehydes, including vanillin in combination with lignin‐derivable homovanillyl alcohol, a prominent aromatic platform chemical obtainable via diol‐assisted fractionation of lignocellulose ...
Anjali Kottayi +6 more
wiley +1 more source
Novel biological approaches for the removal of chlorophenolics [AOX] from bleach plant effluent [PDF]
, 2005 No abstract ...
Veeramani, Harish
core