Zobrazeno 1 - 10
of 12
pro vyhledávání: '"R Z Pen"'
Autor:
Boris N. Kuznetsov, R. Z. Pen, Svetlana A. Kuznetsova, Nikolai V. Chesnokov, Evgeniya S. Skurydina, G. P. Skvortsova, Yu. N. Malyar, Oleg Khanchich
Publikováno v:
Theoretical Foundations of Chemical Engineering. 52:664-669
The effect of the conditions of the acetylation process of raw and activated birch bark on the yield and composition of the products is investigated. The structure of biologically active betulin diacetate (BDA) is confirmed with physicochemical metho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c859de299922b0c7a9847d227d076715
https://doi.org/10.1134/s0040579518040188
https://doi.org/10.1134/s0040579518040188
Publikováno v:
Journal of Physics: Conference Series. 2094:052034
The bonfire (Cannabis sativa) was delignified with the reaction mixture “acetic acid - hydrogen peroxide - sulfuric acid catalyst - water” at a sulfuric acid concentration of 0.45%, a liquid module of 6, and a temperature of 85 °C. The effect of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c123ae104604151b55f3843c40524d4
https://doi.org/10.1088/1742-6596/2094/5/052034
https://doi.org/10.1088/1742-6596/2094/5/052034
Publikováno v:
Journal of Physics: Conference Series. 2094:052043
Hemp fire (Cannabis sativa) was delignified with the reaction mix “acetic acid - hydrogen peroxide - sulfuric acid catalyst - water” under sulfuric acid concentration of 0.45%, liquid module of 6, and temperature of 85 ° C. The cellulose was gro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::75f89e4cb3e2e19db7524b7ff671c9ff
https://doi.org/10.1088/1742-6596/2094/5/052043
https://doi.org/10.1088/1742-6596/2094/5/052043
Autor:
O. G. Morozova, N. S. Veselkova, Mikhail Kudryavtsev, R. Z. Pen, T. L. Kamoza, A. S. Savelyev, I. N. Koyupchenko
Publikováno v:
Thermal Engineering. 64:617-622
Pond-coolers at heat and nuclear power stations are natural-technological systems, so the program of their monitoring should include the effect made by the SRPS (state regional power station) on the pond ecosystem, including thermal discharge of cool
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d833b37a8d71c405a325b5305683274f
https://doi.org/10.1134/s0040601517080079
https://doi.org/10.1134/s0040601517080079
Autor:
R. Z. Pen, A. A. Polyutov
Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала. An example of the potential for robust control of soluble cellulose production was proposed and i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::56f8768968af52c17b9a360b0ec34188
https://openrepository.ru/article?id=458995
https://openrepository.ru/article?id=458995
Publikováno v:
Fibre Chemistry. 38:32-36
Acid prehydrolysis does not impede subsequent peroxide delignification, increases the mass fraction of α-cellulose, and improves the reactivity of cellulose but does not ensure a high degree of modification. Aqueous prehydrolysis is less effective.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d9cd42ca1b58b460e8939b73cabee599
https://doi.org/10.1007/s10692-006-0036-x
https://doi.org/10.1007/s10692-006-0036-x
Publikováno v:
Russian Journal of Applied Chemistry. 76:831-834
A micromethod was developed for estimating the reactivity of cellulose to acetylation by monitoring temperature variation in the process.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::def8a308b7cba25656dde44ef8b0b707
https://doi.org/10.1023/a:1026098312070
https://doi.org/10.1023/a:1026098312070
Publikováno v:
Fibre Chemistry. 32:6-11
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e83a332659ce03fd65aec940f34b11e9
https://doi.org/10.1007/bf02359194
https://doi.org/10.1007/bf02359194
Publikováno v:
Fibre Chemistry. 36:116-118
An environmentally clean peroxide method of manufacturing cellulose was developed as an alternative to the traditional pulping method. Spruce and birch are delignified with hydrogen peroxide in acid medium in the presence of catalysts and the cellulo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e9bd41311d881060f2d44be496d93f4
https://doi.org/10.1023/b:fich.0000033896.97454.2a
https://doi.org/10.1023/b:fich.0000033896.97454.2a
Publikováno v:
Fibre Chemistry. 32:172-174
The possibility of fabricating cotton cellulose from linters with a process scheme which provides for altering the order of the stages of alkaline and acid cooking was investigated. The molecular and process indexes of the cellulose obtained were det
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d9a70e6d4020743df45732afbbc8a8f
https://doi.org/10.1007/bf02361055
https://doi.org/10.1007/bf02361055