Zobrazeno 1 - 10
of 17
pro vyhledávání: '"John Gräsvik"'
Publikováno v:
BMC Biotechnology, Vol 17, Iss 1, Pp 1-10 (2017)
Abstract Background Ionic liquids (ILs) draw attention as green solvents for pretreatment of lignocellulose before enzymatic saccharification. Imidazolium-based ILs with different anionic constituents ([HSO4]−, [Cl]−, [MeCO2]−) were compared wi
Externí odkaz:
https://doaj.org/article/ff1ddd05c9264a8a8f9bc3fec7c3cbb9
Autor:
Javier H. Segura, Mats B. Nilsson, Mahsa Haei, Tobias Sparrman, Jyri-Pekka Mikkola, John Gräsvik, Jürgen Schleucher, Mats G. Öquist
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-8 (2017)
High latitude soils can store around 40 % of the Earth’s soil carbon. Here, the authors add 13C-labeled cellulose to frozen mesocosms of boreal forest soils and find that cellulose biopolymers are hydrolysed under frozen conditions and therefore co
Externí odkaz:
https://doaj.org/article/313fa3ce5bdc48bcbc97db9189e645b5
Autor:
Gabriela Hoffman, Sally Bloodworth, Shamim Alom, Mark E. Light, George Razvan Bacanu, Mark C. Walkey, Richard J. Whitby, Malcolm H. Levitt, John Gräsvik
Publikováno v:
Angewandte Chemie International Edition. 60:8960-8966
An open-cage fullerene incorporating phosphorous ylid and carbonyl group moieties on the rim of the orifice can be filled with gases (H2 , He, Ne) in the solid state, and the cage opening then contracted in situ by raising the temperature to complete
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5e6c16d73c8e13b22a11f518e27a61c2
https://doi.org/10.1002/anie.202100817
https://doi.org/10.1002/anie.202100817
Autor:
Gilbert F. De Gregorio, Cameron C. Weber, Agnieszka Brandt, Jason P. Hallett, Tom Welton, John Gräsvik
Publikováno v:
Green Chemistry. 18:5456-5465
Acidic anions of ionic liquids have been demonstrated as efficient catalysts for the cleavage of the β-O-4 ether linkage prevalent in the lignin superstructure. Through the use of lignin model compounds with varying functionality and by monitoring r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1569aa09d71bfde9c02578e6b2276b69
https://doi.org/10.1039/c6gc01295g
https://doi.org/10.1039/c6gc01295g
Autor:
Leif J. Jönsson, John Gräsvik, Sandra Winestrand, András Gorzsás, Monica Normark, Linda Pommer, Mattias Hedenström
Publikováno v:
BioEnergy Research. 9:355-368
The chemical effects of torrefaction and the possibility to combine torrefaction with biochemical conversion were explored in experiments with five preparations of wood of Norway spruce that had been torrefied using different degrees of severity. Com
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9850599333e8ad2986437dec985eed7f
https://doi.org/10.1007/s12155-015-9698-7
https://doi.org/10.1007/s12155-015-9698-7
Publikováno v:
BMC Biotechnology
BMC Biotechnology, Vol 17, Iss 1, Pp 1-10 (2017)
BMC Biotechnology, Vol 17, Iss 1, Pp 1-10 (2017)
Background Ionic liquids (ILs) draw attention as green solvents for pretreatment of lignocellulose before enzymatic saccharification. Imidazolium-based ILs with different anionic constituents ([HSO4]−, [Cl]−, [MeCO2]−) were compared with regard
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aacd93bca36bd8e3f6dfb63a1007f43c
https://doi.org/10.1186/s12896-017-0403-0
https://doi.org/10.1186/s12896-017-0403-0
Autor:
Benno Meier, Malcolm H. Levitt, Karel Kouřil, Shamim Alom, Richard J. Whitby, John Gräsvik, Christopher Wickens
Publikováno v:
Physical chemistry chemical physics : PCCP. 19(19)
We report the NMR of the molecular endofullerenes H2@C60, H2O@C60 and HF@C60 dissolved in the nematic liquid crystal N-(4-methoxybenzylidene)-4-butylaniline (MBBA). The 1H NMR lines of H2 and H2O display a doublet splitting due to residual dipole–d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d73079ec887dbc9892c3be02e6e64220
https://pubmed.ncbi.nlm.nih.gov/28443877
https://pubmed.ncbi.nlm.nih.gov/28443877
Publikováno v:
Chem. Commun.. 50:7258-7261
Introduced here is a quick, simple, robust method to measure acidity in ionic liquid (IL) systems by the use of the NMR-probe mesityl oxide. Acidity corresponding to a Hammett acidity of -1 to -9 can be measured reliably using this technique, a range
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df1f26f929beec54e5a8a1233d995dbd
https://doi.org/10.1039/c4cc02816c
https://doi.org/10.1039/c4cc02816c
Autor:
Leif J. Jönsson, John Gräsvik, Björn Alriksson, Jyri-Pekka Mikkola, Venkata Prabhakar Soudham
Publikováno v:
Journal of Chemical Technology & Biotechnology. 88:2209-2215
BACKGROUND Enzymatic hydrolysis of cellulose in lignocellulosic materials suffers from slow reaction rates due to limited access to enzyme adsorption sites and to the high crystallinity of the cell ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a9f097bc4f204da483a7d1906e546297
https://doi.org/10.1002/jctb.4089
https://doi.org/10.1002/jctb.4089
The synthesis and purification of ionic liquids is reviewed in this chapter. Brief discussions on the classical synthetic routes are included with the focus directed to those ionic liquids with novel moieties and synthetic routes, since the start of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb606e07c459ed93ac3483c1fcd1c0c0
https://doi.org/10.1016/b978-0-444-63713-0.00002-x
https://doi.org/10.1016/b978-0-444-63713-0.00002-x
