Results 161 to 170 of about 426,028 (222)

Biodegradation of N-Methylmorpholine-N-oxide

Biodegradation, 1998
N-Methylmorpholine-N-oxide (NMMO) is capable of dissolving cellulose without any further addition of chemicals. The solution can be used to produce cellulosic staple fibres by pressing it through spinning jets into an aqueous spinning bath. Because of results from conventional biodegradation tests using non-adapted activated sludge, the solvent is ...
G, Meister, M, Wechsler
openaire   +2 more sources

Ozonation of wastewater containing N-methylmorpholine-N-oxide

Water Research, 1996
Abstract Ozonation of synthetic wastewater containing N-methylmorpholine-N-oxide (NMMO) was investigated in batch experiments at different pH-values. Increasing pH caused higher initial elimination rates of NMMO as well as higher formation rates of nitrate.
Hermann Stockinger, Oemer M. Kut, Elmar Heinzle   +2 more
openaire   +1 more source

Interactions between cellulose and N-methylmorpholine-N-oxide

Carbohydrate Polymers, 2007
Abstract Cellulose II structure was obtained when cellulose precipitated from NMMO/H 2 O/cellulose solution by adding excess water. The regenerated cellulose was three times more reactive than that of untreated cellulose in hydrolysis reactions. X-ray diffraction (XRD), 13 C Solid-State Nuclear Magnetic Resonance (NMR) and Fourier Transform Infrared
Zhao, Haibo, Kwak, Jahun, Wang, Yong, Franz, James A., White, John M., Holladay, Johnathan E.   +5 more
openaire   +2 more sources

Crystallisation of cellulose/N-methylmorpholine-N-oxide hydrate solutions

Polymer, 2002
N-methylmorpholine-N-oxide (NMMO) hydrates are direct solvents for cellulose used commercially in the preparation of cellulose spinning dopes for fibre and film manufacturing. The fact that the cellulose/NMMO/water solutions can crystallise under cooling is important in the process of preparing fibres and films and in their structure formation.
Biganska, Olga, Navard, Patrick, Bédué, Olivier   +2 more
openaire   +1 more source

Heterogeneity in the system cellulose-N-methylmorpholine-N-oxide

Fibre Chemistry, 1987
Data obtained by the turbidity spectrum method indicate a comparatively high heterogeneity of cellulose solutions in N-methylmorpholine-N-oxide monohydrate. The particle size of the disperse phase depends on the temperature-time regime of solution preparation.
V. N. Smirnova, Yu. Ya. Belousov, M. M. Iovleva   +2 more
openaire   +1 more source

Biogas Production from N-Methylmorpholine-N-oxide (NMMO) Pretreated Forest Residues

Applied Biochemistry and Biotechnology, 2014
Lignocellulosic biomass represents a great potential for biogas production. However, a suitable pretreatment is needed to improve their digestibility. This study investigates the effects of an organic solvent, N-Methylmorpholine-N-oxide (NMMO) at temperatures of 120 and 90 °C, NMMO concentrations of 75 and 85% and treatment times of 3 and 15 h on the ...
Solmaz, Aslanzadeh, Andreas, Berg, Mohammad J, Taherzadeh, Ilona, Sárvári Horváth   +3 more
openaire   +2 more sources

Structural transformations in the N-methylmorpholine N-oxide-water system

Fibre Chemistry, 1997
The structural and phase transitions in formation of anhydrous MMO during vacuum drying of DH-MMO and MH-MMO were investigated. The characteristics of the structural changes in MH-MMO in repeated processing of the sample in a heating-cooling regime were determined.
L. K. Kuznetsova, L. K. Golova, G. Ya. Rudinskaya, T. A. Lyubova, N. V. Vasil'eva, O. E. Borodina   +5 more
openaire   +1 more source

Ru on Modified Carbon Submicrometric Spheres as Novel Catalysts for the Oxidative Cleavage of Oleic Acid with N‐Methylmorpholine‐N‐Oxide as Green Oxidizing Agent

ChemCatChem, 2022
Oxidative cleavage of unsaturated fatty acids involves the rupture of carbon‐carbon double bonds to produce carbonyl compounds of high added value. This reaction is mainly performed using homogenous catalysts which are pollutant and cannot be recovered ...
Sebastián Gámez, E. Torre, Eric M. Gaigneaux   +2 more
semanticscholar   +1 more source

Vapor pressure over the system cellulose-N-methylmorpholine-N-oxide-water

Fibre Chemistry, 1987
The vapor pressure over solid cellulose-N-methylmorpholine-N-oxide-water systems and over liquid solutions is higher than that over the MMO·H2O solvent.
M. M. Iovleva, A. N. Sokira
openaire   +1 more source

N‐methylmorpholine‐N‐oxide molecules coated ammonium polyphosphates for dope spinning of flame‐retardant lyocell fiber

Polymer Engineering & Science
Lyocell fiber, hailed as the “verdant filament of the 21st century,” boasts elevated tensile strength, environmentally conscientious production practices, and innate biodegradability.
Shuyu Bai, Junwu Peng, Ling Nie, Xinglin Liu, Yaoting Liang, Zongmin Zhu, Kunkun Zhu   +6 more
semanticscholar   +1 more source