Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Arno Parviainen"'
Autor:
Sandip B. Bankar, Hakim Hebal, Sasikala Anbarasan, Ossi Turunen, Arno Parviainen, Laura Makkonen, Said Benallaoua, He Li, Alistair W. T. King, Ilkka Kilpeläinen
Publikováno v:
Hebal, H, Parviainen, A, Anbarasan, S, Li, H, Makkonen, L, Bankar, S, King, A W T, Kilpeläinen, I, Benallaoua, S & Turunen, O 2020, ' Inhibition of hyperthermostable xylanases by superbase ionic liquids ', Process Biochemistry, vol. 95, pp. 148-156 . https://doi.org/10.1016/j.procbio.2020.03.022
The use of enzymes in aqueous solutions of ionic liquids (ILs) could be useful for the enzymatic treatment of lignocellulose. Hydrophilic ILs that dissolve lignocellulose are harmful to enzymes. The toleration limits and enzyme-friendly superbase IL
Publikováno v:
ChemCatChem. 10:2908-2914
A homogeneous Mn(NO3)(2)/2,2,6,6-tetramethylpiperidin-1-yl)oxyl/2-picolinic acid catalyst system is highly active and versatile for the selective aerobic oxidation of alcohols (2,2,6,6-tet-ramethylpiperidin-1-yl)oxyl = TEMPO, 2-picolinic acid = PyCOO
Publikováno v:
RSC Advances. 8:15111-15118
Herein, we report an efficient transition metal triflate catalyzed approach to convert biomass-based compounds, such as monoterpene alcohols, sugar alcohols, octyl acetate and tea tree oil, to their corresponding olefins in high yields. The reaction
Autor:
Ilkka Kilpeläinen, Arno Parviainen, Sasikala Anbarasan, Jenni Rahikainen, Anna Suurnäkki, Alistair W. T. King, Ossi Turunen, Terhi Puranen, Kristiina Kruus, Ronny Wahlström
Publikováno v:
Rahikainen, J, Anbarasan, S, Wahlström, R, Parviainen, A, King, A W T, Puranen, T, Kruus, K, Kilpeläinen, I, Turunen, O & Suurnäkki, A 2018, ' Screening of glycoside hydrolases and ionic liquids for fibre modification ', Journal of Chemical Technology and Biotechnology, vol. 93, no. 3, pp. 818-826 . https://doi.org/10.1002/jctb.5435
BACKGROUNDThis study elaborates the possibility to apply combined ionic liquid (IL) and enzyme treatments for pulp fibre modification. The approach involves swelling of fibre surfaces with IL followed by enzymatic modification of the disrupted fibre
Autor:
Lauri K. J. Hauru, Herbert Sixta, Arno Parviainen, Unna Liimatainen, Shoaib Azhar, Tia Kakko, Juha Fiskari, Ilkka Kilpeläinen, Tuomas Kulomaa, Martin Lawoko, Somdatta Deb, Sara R. Labafzadeh, Marc Borrega, Alistair W. T. King
Publikováno v:
Deb, S, Labafzadeh, S R, Liimatainen, U, Parviainen, A, Hauru, L K J, Azhar, S, Lawoko, M, Kulomaa, T, Kakko, T, Fiskari, J, Borrega, M, Sixta, H, Kilpelainen, I & King, A W T 2016, ' Application of mild autohydrolysis to facilitate the dissolution of wood chips in direct-dissolution solvents ', Green Chemistry, vol. 18, no. 11, pp. 3286-3294 . https://doi.org/10.1039/c6gc00183a
Wood is not fully soluble in current non-derivatising direct-dissolution solvents, contrary to the many reports in the literature quoting wood 'dissolution' in ionic liquids. Herein, we demonstrate that the application of autohydrolysis, as a green a
Autor:
Ronny Wahlström, Anna Suurnäkki, Stella Rovio, Uula Hyväkkö, Arno Parviainen, Ilkka Kilpeläinen, U. Liimatainen, Alistair W. T. King, Tiina Liitiä, Jussi Helminen
Publikováno v:
Parviainen, A, Wahlström, R, Liimatainen, U, Liitiä, T, Rovio, S, Helminen, J K J, Hyväkkö, U, King, A W T, Suurnäkki, A & Kilpeläinen, I 2015, ' Sustainability of cellulose dissolution and regeneration in 1,5-diazabicyclo[4.3.0]non-5-enium acetate: a batch simulation of the IONCELL-F process ', RSC Advances, vol. 5, pp. 69728-69737 . https://doi.org/10.1039/C5RA12386K
The recyclability of 1,5-diazabicyclo[4.3.0] non-5-enium acetate ([DBNH][OAc]), as a direct dissolution solvent for cellulose, was evaluated during laboratory scale recycling trials. The main objective was to simulate the conditions of a spinning bat
Autor:
Héctor Rodríguez, Ilkka Kilpeläinen, Arno Parviainen, Ashley J. Holding, Alistair W. T. King, Ana Soto
Publikováno v:
Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
instname
Holding, A J, Parviainen, A, Kilpeläinen, I, Soto, A, King, A W T & Rodríguez, H 2017, ' Efficiency of hydrophobic phosphonium ionic liquids and DMSO as recyclable cellulose dissolution and regeneration media ', RSC Advances, vol. 7, no. 28, pp. 17451-17461 . https://doi.org/10.1039/c7ra01662j
instname
Holding, A J, Parviainen, A, Kilpeläinen, I, Soto, A, King, A W T & Rodríguez, H 2017, ' Efficiency of hydrophobic phosphonium ionic liquids and DMSO as recyclable cellulose dissolution and regeneration media ', RSC Advances, vol. 7, no. 28, pp. 17451-17461 . https://doi.org/10.1039/c7ra01662j
Hydrophobic, long-chain tetraalkylphosphonium acetate salts (ionic liquids) were combined with a dipolar aprotic co-solvent, dimethylsulfoxide (DMSO), and the feasibility of these solvent systems for cellulose dissolution and regeneration was studied
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2875cb74348770b78f82c275627035f5
http://hdl.handle.net/10347/23010
http://hdl.handle.net/10347/23010
Autor:
Ritva Serimaa, Helena Parviainen, Ilkka Kilpeläinen, Tommi Virtanen, Stina Grönqvist, Arno Parviainen, Patrik Ahvenainen, Sirkka Liisa Maunu, Thaddeus Maloney
Publikováno v:
Parviainen, H, Parviainen, A, Virtanen, T, Kilpeläinen, I, Ahvenainen, P, Serimaa, R, Grönqvist, S, Maloney, T & Maunu, S L 2014, ' Dissolution enthalpies of cellulose in ionic liquids ', Carbohydrate Polymers, vol. 113, pp. 67-76 . https://doi.org/10.1016/j.carbpol.2014.07.001
In this work, interactions between cellulose and ionic liquids were studied calorimetrically and by optical microscopy. Two novel ionic liquids (1,5-Diazabicyclo[4.3.0]non-5-enium propionate and N-methyl-1,5-diazabicyclo[4.3.0]non-5-enium dimethyl ph
Publikováno v:
ChemPlusChem. 81(11)
A method for aerobic alcohol oxidation catalysed by Fe(NO3 )3 /2,2'-bipyridine/TEMPO has allowed highly selective conversion of primary alcohols into either aldehydes or carboxylic acids in one-step. The oxidation of primary alcohols proceeded select
Autor:
Jorma Matikainen, Arno Parviainen, Pirkko Karhunen, Alistair W. T. King, Ilkka Kilpeläinen, Herbert Sixta, Lauri K. J. Hauru
Publikováno v:
King, A W T, Parviainen, A, Karhunen, P, Matikainen, J, Hauru, L K J, Sixta, H & Kilpelainen, I 2012, ' Relative and inherent reactivities of imidazolium-based ionic liquids : The implications for lignocellulose processing applications ', RSC Advances, no. 21, pp. 8020-8026 . https://doi.org/10.1039/c2ra21287k
Novel methods for the fractionation of wood, as a major renewable chemical and material feedstock, are in demand. Ionic liquids, such as 1-ethyl-3-methylimidazolium acetate ([emim][OAc]), are promoted as potential media for these processes. However,