Zobrazeno 1 - 10
of 1 519
pro vyhledávání: '"CP/MAS NMR"'
Publikováno v:
Journal of Natural Fibers, Vol 19, Iss 13, Pp 6365-6376 (2022)
Cellulose swelling using different protic, aprotic and alkaline solvents, which are capable of penetrating crystalline parts of cellulose is one of the important methods to enhance the accessibility and, as a result, the reactivity of cellulose in mo
Externí odkaz:
https://doaj.org/article/fc137027ca1d4dd4b0ccdfbaf5fb2024
Autor:
GU Ya-ting, ZHANG Wen-na, HAN Jing-feng, LOU Cai-yi, CHEN Hui-hui, XU Shu-tao, WEI Ying-xu, LIU Zhong-min
Publikováno v:
Chinese Journal of Magnetic Resonance, Vol 39, Iss 04, Pp 428-438 (2022)
In this paper, the conversion of methanol and butanol and the differences in product distribution over H-SAPO-34 were investigated. Some important reaction intermediates were captured during the reaction process by using gas chromatography-mass spect
Externí odkaz:
https://doaj.org/article/93e43587aa204c13afbaf203952f8c45
Akademický článek
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Autor:
Irina Vydrina, Alexey Malkov, Ksenia Vashukova, Irina Tyshkunova, Lyudmila Mayer, Anna Faleva, Semyon Shestakov, Evgenii Novozhilov, Dmitry Chukhchin
Publikováno v:
Carbohydrate Polymer Technologies and Applications, Vol 5, Iss , Pp 100305- (2023)
A new method was proposed which allowed more accurate crystallinity results for lignocellulose comparing to conventional calculation models. The method is based on the estimation of the changing rate of the XRD intensity I = f(2θ) over the entire ra
Externí odkaz:
https://doaj.org/article/b1f5632360004276a48f00fb5b4a4b6b
Autor:
Huajie Zhu, Shengnan Li, Yunjing Jia, Juxing Jiang, Feiliu Hu, Longfei Li, Fei Cao, Xiaoke Wang, Shenhui Li, Guanghui Ouyang, Gengfang Tian, Ke Gong, Guangjin Hou, Wei He, Zheng Zhao, Charles U. Pittman, Feng Deng, Minghua Liu, Kai Sun, Ben Zhong Tang
Publikováno v:
Frontiers in Chemistry, Vol 10 (2022)
We now report that some chiral compounds, like alcohols, which are not sterically hindered atropisomers nor epimer mixtures, exhibit two sets of simultaneous NMR spectra in CDCl3. Some other chiral alcohols also simultaneously exhibit two different N
Externí odkaz:
https://doaj.org/article/99f80914261e448bbd969dde9e248541
Publikováno v:
Journal of Wood Science, Vol 66, Iss 1, Pp 1-7 (2020)
Abstract Cellulose forms crystalline fibrils, via biosynthesis, that can be just a few nanometers wide. The crystallinity is a structural factor related to material performance. Recently, many routes to isolate these fibrils as nanocellulose have bee
Externí odkaz:
https://doaj.org/article/04fd8aafaf864a9e8ae4516db0f8cf19
Autor:
Alexandra Kremmyda, William MacNaughtan, Dimitris Arapoglou, Christos Eliopoulos, Maria Metafa, Stephen E. Harding, Cleanthes Israilides
Publikováno v:
Data in Brief, Vol 40, Iss , Pp 107765- (2022)
In the associated published article Kremmyda et al. (2021), the C1 region of the NMR spectra were examined in detail, as the C1 carbon was common to the crucial linkages in the glucan, and the most clearly separated region in the spectra. We provide
Externí odkaz:
https://doaj.org/article/0e35a5c6b2e7467f93b50e55c9166cd7
Akademický článek
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Autor:
Céline Moreau, Sandra Tapin-Lingua, Sacha Grisel, Isabelle Gimbert, Sophie Le Gall, Valérie Meyer, Michel Petit-Conil, Jean-Guy Berrin, Bernard Cathala, Ana Villares
Publikováno v:
Biotechnology for Biofuels, Vol 12, Iss 1, Pp 1-13 (2019)
Abstract Background Lytic polysaccharide monooxygenases (LPMOs) are copper-dependent enzymes that cleave polysaccharides through an oxidative mechanism. These enzymes are major contributors to the recycling of carbon in nature and are currently used
Externí odkaz:
https://doaj.org/article/a277fbbd93c542f2b114fda9271e6386