Výsledky vyhledávání - "Martta Asikainen"

Akademický článek

The effect of mixing and consistency on cellulose cationization

Autor: Pia Willberg-Keyriläinen, Pauliina Pitkänen, Janne Hulkko, Martta Asikainen, Harri Setälä

Publikováno v: Heliyon, Vol 5, Iss 3, Pp e01349- (2019)

Traditional chemical modifications of cellulose are usually done at low or medium consistencies. Processing at high solids content is expected to provide a leap forward in reduction of manufacturing costs such as minimization of chemical use, energy

Externí odkaz: https://doaj.org/article/d2a7bcd9fe58435284090e581b9554cd

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Akademický článek

Experiences of Kraft Lignin Functionalization by Enzymatic and Chemical Oxidation

Autor: Anna Kalliola, Martta Asikainen, Riku Talja, Tarja Tamminen

Publikováno v: BioResources, Vol 9, Iss 4, Pp 7336-7351 (2014)

Linear hydrophilic derivatives are expected to soften lignin and improve its utilization in composite applications. Oxidation by means of laccase in the presence of oxygen was employed in an attempt to functionalize commercial kraft lignin by vanilli

Externí odkaz: https://doaj.org/article/a224e502fddf462fa81fa426a4d51cc9

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A unique pathway to platform chemicals

Autor: Klaus Niemelä, Nicolaas van Strien, Juha Linnekoski, Ali Harlin, Sari Rautiainen, David Thomas, Martta Asikainen

Publikováno v: Strien, N V, Rautiainen, S, Asikainen, M, Thomas, D A, Linnekoski, J, Niemelä, K & Harlin, A 2020, ' A unique pathway to platform chemicals : aldaric acids as stable intermediates for the synthesis of furandicarboxylic acid esters ', Green Chemistry, vol. 22, no. 23, pp. 8271-8277 . https://doi.org/10.1039/D0GC02293D

2,5-Furandicarboxylic acid (FDCA) has received attention as an emerging bio-based building block with many applications, especially in renewable polyesters. The common route to FDCA uses the unstable 5-hydroxymethylfurfural (HMF) as an intermediate.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9bcee14c86dde094b9db434e3446eadc
https://doi.org/10.1039/D0GC02293D

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Synthesis and purification of muconic acid ester from aldaric acid esters

Autor: David Thomas, Juha Linnekoski, Martta Asikainen, Nicolaas van Strien, Anneloes Berghuis

Publikováno v: Thomas, D, Linnekoski, J, Asikainen, M, Van Strien, N & Berghuis, A Feb. 18 2021, Synthesis and purification of muconic acid ester from aldaric acid esters, Patent No. US10968161 .
VTT Technical Research Centre of Finland-PURE

According to an example aspect of the present invention, there is provided a method for producing muconic acid ester from aldaric acid ester, and for separating and purifying the produced muconic acid ester by high vacuum distillation in a total heat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::a048a28ce7145317d16e6e71af9a8ade
https://cris.vtt.fi/en/publications/b7040889-d0a5-4174-bf8d-9817745dfb5d

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Synthesis of furandicarboxylic acid and ester thereof

Autor: David Thomas, Anneloes Berghuis, Nicolaas van Strien, Martta Asikainen, Marco Huotari, Juha Linnekoski

Publikováno v: Thomas, D, Berghuis, A, Van Strien, N, Asikainen, M, Huotari, M & Linnekoski, J Jun. 11 2020, Synthesis of furandicarboxylic acid and ester thereof, Patent No. FI20186062 .
VTT Technical Research Centre of Finland-PURE

According to an example aspect of the present invention, there is provided both a continuous method and a batch method for producing furandicarboxylic acid (FDCA) and furandicarboxylic acid ester (FDCAE) from aldaric acid ester by utilizing cheap and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::b457aa2f539f80dbc8a5d5203150689c
https://cris.vtt.fi/en/publications/fbb827eb-e66e-4ca1-bd75-b2efcd74990c

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Experiences of kraft lignin functionalization by enzymatic and chemical oxidation

Autor: Riku Talja, Tarja Tamminen, Anna Kalliola, Martta Asikainen

Publikováno v: Kalliola, A, Asikainen, M, Talja, R & Tamminen, T 2014, ' Experiences of kraft lignin functionalization by enzymatic and chemical oxidation ', BioResources, vol. 9, no. 4, pp. 7336-7351 . https://doi.org/10.15376/biores.9.4.7336-7351
BioResources, Vol 9, Iss 4, Pp 7336-7351 (2014)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b0d129304c6383c0a2dd2a95e5b2598
https://cris.vtt.fi/en/publications/c2067b23-67cf-4e8d-aceb-e46b9b059a4f

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Combined coinage metal catalysis for the synthesis of bioactive molecules

Autor: Carl Deutsch, Viola Breker, Hong-Tao Fan, Norbert Krause, Jörg Erdsack, Frank Volz, Yuka Sawama, Yoshinari Sawama, Tao Sun, Christian Winter, Birgit Gockel, Manojkumar Poonoth, Stefan R. K. Minkler, Özge Aksin-Artok, Martta Asikainen

Publikováno v: Journal of Organometallic Chemistry. 704:1-8

The use of the coinage metals copper, silver, and gold enables an efficient and stereoselective assembly of bioactive heterocycles via allenic intermediates. Whereas copper is mediating or catalyzing the synthesis of functionalized allenes by SN2′-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7ca0c30ed49eeafffe782af960b9a816
https://doi.org/10.1016/j.jorganchem.2012.01.008

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Tandem Enzyme/Gold-Catalysis: From Racemic α-Allenic Acetates to Enantiomerically Enriched 2,5-Dihydrofurans in One Pot

Autor: Norbert Krause, Martta Asikainen

Publikováno v: Advanced Synthesis & Catalysis. 351:2305-2309

We report the first example of a tandem kinetic resolution/cycloisomerization of racemic allenic acetates in the presence of Burkholderia cepacia lipase (PS Amano SD) and catalytic amounts of chloroauric acid (HAuCl 4 ) which affords 2,5-dihydrofuran

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3dfb04d4a3512a189d3bcb7934404646
https://doi.org/10.1002/adsc.200900434

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Conversion of polar and non-polar algae oil lipids to fatty acid methyl esters with solid acid catalysts--A model compound study

Autor: Juha Linnekoski, Tony Munter, Martta Asikainen

Publikováno v: Asikainen, M, Munter, T & Linnekoski, J 2015, ' Conversion of polar and non-polar algae oil lipids to fatty acid methyl esters with solid acid catalysts : A model compound study ', Bioresource Technology, vol. 191, pp. 300-305 . https://doi.org/10.1016/j.biortech.2015.05.001

Bio-based fuels are becoming more and more important due to the depleting fossil resources. The production of biodiesel from algae oil is challenging compared to terrestrial vegetable oils, as algae oil consists of polar fatty acids, such as phosphol

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9bd2d3d5eef61722900117f47715dbf3
https://pubmed.ncbi.nlm.nih.gov/26004380

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Production of p-cymene from crude sulphate turpentine with commercial zeolite catalyst using a continuous fixed bed reactor

Autor: Reetta Kaila, Ali Harlin, Juha Linnekoski, Harri Heikkinen, Jari Räsänen, Antero Laitinen, Martta Asikainen

Publikováno v: Linnekoski, J, Asikainen, M, Heikkinen, H, Kaila, R, Räsänen, J, Laitinen, A & Harlin, A 2014, ' Production of p-cymene from crude sulphate turpentine with commercial zeolite catalyst using a continuous fixed bed reactor ', Organic Process Research and Development, vol. 18, no. 11, pp. 1468-1475 . https://doi.org/10.1021/op500160f

Crude sulphate turpentine (CST), containing α-pinene, 3-carene, other terpene isomers, and organic sulphur compounds, was used as feedstock in the production of cymenes with commercial zeolite catalysts. The catalysts used were not sensitive to sulp

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c9a1784743f0a03b3f4dbdc892a1a8df
https://cris.vtt.fi/en/publications/777294ca-5fcb-4c08-a9f1-a52fa849fa3b

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