Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Marja Tiitta"'
Autor:
Emma Verkama, Paavo Auvinen, Sylvia Albersberger, Marja Tiitta, Reetta Karinen, Riikka L. Puurunen
Publikováno v:
Topics in Catalysis.
Understanding how hydrotreating oxygen-containing compounds together with nitrogen-containing compounds affects the reactivity and selectivity is relevant for processing renewable feedstocks. In this work, competitive hydrodeoxygenation (HDO) and hyd
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::099b5164c538aa3a39e946c8e6febab0
https://doi.org/10.1007/s11244-023-01784-w
https://doi.org/10.1007/s11244-023-01784-w
Autor:
Marja Tiitta, Heidi Österholm, Väinö Sippola, Narendra Kumar, Jaana Makkonen, Marina Lindblad
Publikováno v:
Chemie Ingenieur Technik. 93:974-980
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4ea1d99034a6cc2961b1f66ca1414c4e
https://doi.org/10.1002/cite.202000168
https://doi.org/10.1002/cite.202000168
Publikováno v:
Chemical Engineering Journal. 238:3-8
The activity and selectivity of Pt/Beta, Pt/Ir-Beta/alumina and Pt/Ir-Beta/silica was investigated in the ring opening of decalin at 250–350 °C in the presence of hydrogen. Time on stream experiments were performed in a special tailor made reactor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dcbf185f97135b04b9acc83fc5891c00
https://doi.org/10.1016/j.cej.2013.06.101
https://doi.org/10.1016/j.cej.2013.06.101
Autor:
Marja Tiitta, Krisztian Kordas, Heidi Österholm, D. Yu. Murzin, Teemu Heikkilä, Narendra Kumar, Tapio Salmi, Matias Kangas, Päivi Mäki-Arvela, David Kubička, Niko Musakka, Anne-Riikka Leino
Publikováno v:
Catalysis in Industry. 5:105-122
Embedded materials prepared from MCM-41 together with BE or TON were synthesized, characterized and tested in the ring opening of decalin in a temperature range of 523–623 K. The characterization results revealed that both microporous and mesoporou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60b2ddfaba5d32ddef8940f104d4e4ae
https://doi.org/10.1134/s2070050413020074
https://doi.org/10.1134/s2070050413020074
Publikováno v:
Chemical Engineering Journal. 213:235-244
Isooctane is a typically used vehicle fuel component. However, the synthesis of isooctane is limited due to the coking phenomenon when using zeolite catalysts. In this paper the suitability of CO2 as a solvent for zeolite based acid catalytic reactio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e10a31e4f5cd6d0770d91a0286d2eb9c
https://doi.org/10.1016/j.cej.2012.09.118
https://doi.org/10.1016/j.cej.2012.09.118
Autor:
Marja Tiitta, Narendra Kumar, Dmitry Yu. Murzin, Tapio Salmi, Marina Lindblad, Heidi Österholm
Publikováno v:
Microporous and Mesoporous Materials. 154:124-132
MFI and BEA zeolite seeds were embedded in MCM-41 gel mixture with or without additional aluminum isopropoxide. These novel meso–microporous molecular sieves, NK-MM-MFI and NK-MM-BEA, contain zeolite crystallites surrounded by a mesoporous ordered
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2993864d9d12b673df453d71878c527
https://doi.org/10.1016/j.micromeso.2011.10.006
https://doi.org/10.1016/j.micromeso.2011.10.006
Autor:
J.I. Villegas, Marja Tiitta, Anne-Riikka Leino, Päivi Mäki-Arvela, T. Heikkilä, Narendra Kumar, D. Y. Murzin, Krizstian Kordas, T. Yläsalmi, Tapio Salmi, Sigmund Fugleberg, Heidi Österholm
Publikováno v:
Catalysis for Sustainable Energy. 1:1-10
Dimerization of 1-butene in the liquid phase was studied at relatively mild conditions, 523 K under 20 bar over both microporous and embedded microporous mesoporous catalysts. Embedded catalysts were prepared by introducing Beta zeolite nuclei into t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87d1d7964034f769e186cfa9ff53cc60
https://doi.org/10.2478/cse-2012-0001
https://doi.org/10.2478/cse-2012-0001
Publikováno v:
Biomass and Bioenergy. 35:1967-1976
Catalytic transformation of levoglucosan (1-6-anhdyro-β-d-glucopyranose) was carried out in a fixed bed reactor at 573 K over zeolite and mesoporous material catalysts. Proton forms of MCM-22-30 and MCM-41-20 catalysts were tested in the conversion,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a258994ad82f5e850554cd19d1f28e43
http://juuli.fi/Record/0051547611
http://juuli.fi/Record/0051547611
Publikováno v:
ChemCatChem. 2:539-546
Catalytic transformations of levoglucosan (1-6-anhydro-β-D-glucopyranose) and furfural were carried out in a fixed-bed reactor at 573 K over mesoporous materials. Proton forms of MCM-41, MCM-48, SBA-15, and platinum form of MCM-48 catalysts were tes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::303985a8faaaf46b2cc2b7e14bcbe439
https://doi.org/10.1002/cctc.201000024
https://doi.org/10.1002/cctc.201000024
Publikováno v:
Fuel. 88:366-373
Upgrading of the low-quality feedstocks into high-quality diesel fuel fractions by hydrogenation combined with ring-opening of naphthenes offers a new possibility to improve the diesel fuel properties. Decalin was selected as a probe molecule for din
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3959ac0b1a8c5c4e0b7ddde58480b3a4
https://doi.org/10.1016/j.fuel.2008.09.004
https://doi.org/10.1016/j.fuel.2008.09.004