Тип публикации: статья из журнала
Год издания: 2020
Идентификатор DOI: 10.1134/S2070050420030125
Ключевые слова: larch wood, delignification, hydrogen peroxide, acetic acid, mnso(4)catalyst, mathematical optimization, cellulose, mnso4 catalyst
Аннотация: Experiments and calculations are used to determine the optimum parameters of the peroxide delignification of larch wood in the presence of MnSO(4)catalyst that provides high yields of cellulose (44.3 wt %) with low residual lignin contents at a temperature of 100 degrees C, an H(2)O(2)content of 6 wt %, a CH3COOH content of 25 wt %Показать полностью, a LWR of 15, and a duration of 3 h The cellulose obtained under optimum conditions has a chemical composition of cellulose, 92.7 wt %; lignin, 0.6 wt %; and hemicellulose, 5.7 wt %. IRS and X-ray diffraction are used to determine that cellulose obtained from larch wood has a structure similar to that of industrial microcrystalline cellulose. The proposed catalytic approach allows cellulose to be obtained from larch wood with a minimal lignin content under mild conditions in one step and with a high yield, a degree of crystallinity of 0.8, and a crystallite size of 3.0 nm.
Журнал: CATALYSIS IN INDUSTRY
Выпуск журнала: Vol. 12, Is. 3
Номера страниц: 265-272
ISSN журнала: 20700504
Место издания: MOSCOW
Издатель: MAIK NAUKA-INTERPERIODICA