Zobrazeno 1 - 10
of 73
pro vyhledávání: '"Ivar M. Dahl"'
Publikováno v:
Adsorption Science & Technology, Vol 15 (1997)
Two dealuminated β-zeolites, zeolite Y and MCM-22 as well as silicalite, MCM-41 and AlPO 4 -5 have been studied as hydrophobic adsorbents in water solutions. Dealuminated β-zeolite, MCM-22 and silicalite all adsorb alcohols from water solutions. En
Externí odkaz:
https://doaj.org/article/b5a0b02c61b14c19975fbe185d2177c5
Publikováno v:
Applied Catalysis A: General. 375:213-221
Cracking of cyclohexane has been performed over a HZSM-5 catalyst with Si/Al ratios 28, 85 and 200, in the temperature region 400–650 °C and with partial pressures of cyclohexane up to 2 bar. The cracking kinetics for Si/Al = 200 can be adequately
Autor:
Elisabeth M. Myhrvold, Trond Myrstad, Michael Stöcker, Elisabeth Tangstad, Ivar M. Dahl, Anne Andersen
Publikováno v:
Applied Catalysis A: General. 313:35-40
An equilibrium FCC (ECAT) sample containing 2800 ppm vanadium and 2500 ppm nickel was characterized by ESR and ESCA, and tested in a microactivity test (MAT) to study the effect of reductive pretreatments at elevated temperatures. From ESR and ESCA s
Autor:
Morten Bjørgen, Sharmala Aravinthan, Stein Kolboe, Ivar M. Dahl, Unni Olsbye, Karl Petter Lillerud, Stian Svelle
Publikováno v:
Journal of Catalysis. 241:243-254
Methyl chloride (MeCl) and methyl bromide (MeBr) were converted to hydrocarbons over a H-SAPO-34 catalyst in a fixed-bed reactor at atmospheric total pressure. The feed rate (WHSV, equivalent to the mass of methanol) was in the range of 0.8–7.7 h
Publikováno v:
The Journal of Physical Chemistry A. 110:9801-9804
An experimental and theoretical study of the absolute value of the one-bond spin-spin coupling constant |(1)J(Si,H)| in SiH(n)Cl(4-n) (n = 0-4) dissolved in THF-d(8) is presented. We found |(1)J(Si,H)| to increase with an increasing number of chlorin
Publikováno v:
Applied Catalysis A: General. 303:131-137
High hydrogen yields can be obtained by sorbent enhanced steam reforming (SESR) of methane at temperatures below 600 °C by using calcined dolomite as internal sorbent together with a Ni/NiAl 2 O 4 catalyst in a fluidized bed reactor. Effluent gas co
Publikováno v:
Applied Catalysis A: General. 228:289-303
Reduction of the steam-to-carbon ratio in methane-to-synthesis gas reactions is a major concern in industrial research on natural gas conversion processes. A major obstacle is coke formation. In this work, comparative coke formation studies were perf
Autor:
Duncan Akporiaye, Martin Plassen, Arne Karlsson, Robert W. Broach, Mark A. Miller, Jaime G. Moscoso, David S. Bem, Gregory J. Lewis, Ivar M. Dahl, Rune Wendelbo
Publikováno v:
Microporous and Mesoporous Materials. 48:367-373
Considering the increasing pressures and constraints on research and development towards focussed innovation, the prospects of new fast and cost-effective approaches addressing the many challenges faced in more rapidly developing next generation prod
Publikováno v:
Industrial & Engineering Chemistry Research. 40:2226-2235
The gas-phase chlorination of ethane has been studied experimentally and by simulation of the corresponding gas-phase reaction scheme. In addition, some key reactions in ethane chlorination have be...
Autor:
Richard Blom, Ivar M. Dahl
Publikováno v:
Macromolecular Chemistry and Physics. 202:719-725
A modelling strategy is presented for prediction of molecular weight distribution (MWD) obtained by single-site catalysts when polymerising ethylene in the presence of hydrogen as chain transfer agent. The different ways of hydrogen addition into the