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Träfflista för sökning "WFRF:(Jobson Edward) "

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Numrering	Referens	Omslagsbild	Hitta
1.	Amberntsson, Annika, 1974, et al. (författare) Influence of sulphur carrier on the deactivation of NOx storage catalysts 2001 Ingår i: 5th European Congress on Catalysis, Limerick, Ireland, September 2-7, 2001. Konferensbidrag (refereegranskat)
2.	Amberntsson, Annika, 1974, et al. (författare) SO2 deactivation of NOx storage catalysts: Influence of noble metal composition and SO2 exposure conditions 2001 Ingår i: 17th North American Catalysis Society Meeting, Toronto, Canada, June 3-8, 2001. Konferensbidrag (refereegranskat)
3.	Carlsson, Per-Anders, 1972, et al. (författare) Improved low-temperature catalytic activity by transient changes in the gas composition 2001 Ingår i: Proceedings of the 17th North American Catalysis Society Meeting, Toronto, Canada, June 3-8. Konferensbidrag (refereegranskat)
4.	Carlsson, Per-Anders, 1972, et al. (författare) Induced low-temperature catalytic ignition by transient changes in the gas composition 2001 Ingår i: Proceedings of the 5th European Congress on Catalysis, Limerick, Ireland, September 2-7. Konferensbidrag (refereegranskat)
5.	Carlsson, Per-Anders, 1972, et al. (författare) Induced low temperature catalytic ignition by transient changes in the gas composition 2002 Ingår i: Catalysis Today. - 0920-5861. ; 73:3-4, s. 307-313 Tidskriftsartikel (refereegranskat)abstract The effect of gas composition changes on the low temperature activity for supported platinum model catalysts has been studied. By introducing well-controlled periodic O2 pulses to a simple diluted gas mixture of CO and O2, a substantial improvement of the low temperature oxidation activity was observed. The reason for low activity on noble metals at low temperatures is often attributed to self-poisoning by CO. The improved catalytic performance observed is proposed to origin from the transients causing a surface reactant composition that is favourable for the reaction rate, i.e. lower degree of self-poisoning. This was also confirmed by in situ Fourier transform infrared spectroscopy in combination with mass spectrometry measurements, which gave evidence for the existence of a strong interplay between the gas phase concentration and the adsorbate composition for these catalysts.
6.	Carlsson, Per-Anders, 1972, et al. (författare) Periodic control for improved low-temperature catalytic activity 2001 Ingår i: Topics in Catalysis. - 1572-9028 .- 1022-5528. ; 16-17:1-4, s. 343-347 Tidskriftsartikel (refereegranskat)abstract The influence of transient changes in the gas composition on the low-temperature activity of a commercial three-way catalyst and a Pt/Al2O3 model catalyst has been studied. By introducing well-controlled periodic O2 pulses to simple gas mixtures of CO or C3H6 (in N2), a substantial improvement of the low temperature oxidation activity was observed for both catalysts. The reason for low activity at low temperatures is normally attributed to self-poisoning by CO or hydrocarbons. The improved catalytic performance observed here is suggested to origin from the transients causing a surface reactant composition that is favourable for the reaction rate.
7.	Carlsson, Per-Anders, 1972, et al. (författare) Periodic control for improved low-temperature ignition 2000 Ingår i: Proceedings of the 9th Nordic Symposium on Catalysis, Stockholm, Sweden, June 4-6. Konferensbidrag (refereegranskat)
8.	Carlsson, Per-Anders, 1972, et al. (författare) Periodic control for low-temperature ignition 2000 Ingår i: Proceedings of the 5th International Congress on Catalysis and Automotive Pollution Control (CAPoC5), Brussels, Belgium, April 12-14. Konferensbidrag (refereegranskat)
9.	Erkfeldt, Sara U, 1974, et al. (författare) NOx Reduction Performance of Lean NOx Catalyst and Lean NOx Adsorber Using DME as Reducing Agent 2007 Ingår i: Topics in Catalysis. ; 42/43, s. 149-152 Tidskriftsartikel (refereegranskat)
10.	Holma, Thomas, 1974, et al. (författare) Continuous lean NOx reduction with hydrocarbons over dual pore system catalysts 2004 Ingår i: Applied Catalysis B: Environmental. - : Elsevier BV. - 0926-3373 .- 1873-3883. ; 48:2, s. 95-100 Tidskriftsartikel (refereegranskat)abstract In order to reduce CO2 emissions there is a trend towards an increased use of more fuel-efficient lean burn combustion engines and thus an increased need for deNOx catalysts for such engines. In this study a mechanical mixture of CoFER and HZSM-5 zeolites was studied as a dual pore system catalyst for the continuous lean reduction of NOx with isobutane as reducing agent. The degree of NOx conversion was found to be strongly dependent on the oxygen concentration in the gas mixture, and the highest degree of reduction was achieved with 10% O2. This optimum is explained by the need for NO2 as an intermediate for the catalyst to work efficiently, and that above a certain oxygen concentration O2 oxidises the hydrocarbon resulting in a lower reduction potential for NOx. At an operating temperature of 350 °C the conversion of NOx to N2 was 52% under steady-state conditions, but the efficiency can be improved further by optimisation of the oxidising zeolite and of the mixing ratio of the two zeolites.

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Typ av publikation: konferensbidrag (14); tidskriftsartikel (13); annan publikation (1)

Typ av innehåll: refereegranskat (27); övrigt vetenskapligt/konstnärligt (1)

Författare/redaktör: Jobson, Edward, 1961 (23); Skoglundh, Magnus, 1 ... (22); Fridell, Erik, 1963 (16); Thormählen, Peter, 1 ... (12); Andersson, Bengt, 19 ... (8); Carlsson, Per-Anders ... (7); visa fler...; Palmqvist, Anders, 1 ... (7); Persson, Hans (5); Jobson, Edward (5); Erkfeldt, Sara U, 19 ... (4); Larsson, Mikael (3); Törncrona, Anders, 1 ... (3); Petersson, Martin, 1 ... (3); Holma, Thomas, 1974 (3); Svedberg, Pernilla, ... (3); Olsson, Louise, 1974 (2); Amberntsson, Annika, ... (2); Cruise, Neil, 1969 (2); Augustsson, Ola (2); Drewsen, Astrid, 197 ... (2); Ljungqvist, Anna (2); Smedler, Gudmund, 19 ... (1); Nilsson, Mikael, 197 ... (1); Jonsson, Martin (1); Ljungström, Evert, 1 ... (1); Kasemo, Bengt Herber ... (1); Andersson, Lennart (1); Carlsson, Anna (1); Karlsson, Hanna (1); Jozsa, Peter (1); Hinz, Andreas (1); Zhao, Dongmei, 1963 (1); Wendin, Marcus (1); Van de Voorde, Patri ... (1); Abdul-Milh, Miroslav ... (1); Granbro, Roland (1); Megas, Lucas (1); Nisius, Patrick (1); Wiartalla, Andreas (1); Lepperhoff, Gerhard (1); Blakeman, Phil (1); Ilkenhans, Thomas (1); Webster, Dennis (1); Haeffler, G. (1); Schmidt-Zhang, Peter (1); Guth, Ulrich (1); Wallin, Mikaela, 197 ... (1); Hajbolouri, Fageh, 1 ... (1); Hajbolouri, Faegeh (1); visa färre...

Lärosäte: Chalmers tekniska högskola (28); Göteborgs universitet (1)

Språk: Engelska (28)

Forskningsämne (UKÄ/SCB): Teknik (28); Naturvetenskap (5)

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