LOTUS: A Co-operation for Low Temperature Urea-Based Selective Catalytic Reduction of NOx

Palmqvist, Anders; Jobson, Edward; Andersson, Lennart; Granbro, Roland; Wendin, Marcus; Megas, Lucas; Nisius, Patrick; Wiartalla, Andreas; Lepperhoff, Gerhard; Blakeman, Philip G.; Ilkenhans, Thomas; Webster, Dennis; Haeffler, Gunnar; Voorde, Patrick Van de; Schmidt‐Zhang, Peter; Guth, U.; Wallin, Mikaela

doi:10.4271/2004-01-1294

Cited by 7 publications

(2 citation statements)

References 18 publications

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“…It has been reported that Fe 2 O 3 [3][4][5], Fe containing oxides [6,7] and Fe-exchanged materials [8,9] have a greater SCR activity than that of other types of catalyst. The process of SCR of NOx at a low temperature with ammonia has been investigated with metal Ni [10][11][12], the results show that Ni is efficient for the reduction of NOx.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Performance of Fe-Based Catalysts for NOx Reduction with NH3

Xiao

Zhou

Zhang³

et al. 2009

2009 Asia-Pacific Power and Energy Engineering Conference

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Selective catalytic reduction (SCR) with ammonia is a well-proven technique for NOx removal in power stations. It is very effective in NOx reduction with an efficient up to 98%. However, the current SCRs have a limitation on operation temperature and a narrow operation temperature window.Metal Fe based catalysts were used in the investigation to improve the low temperature performance of NOx conversion. The temperature range studied was between 150 °C and 350 °C with an interval of 50 °C. The honeycomb catalysts were prepared by an impregnation method. The study also included characterization of catalysts by XRD, H 2 -TPR and SEM methods.It is found an increase in metal Fe content from 2 to 6 % wt. offers an improvement in the catalytic performance. However, a further increment in Fe content will result in a decrease in its performance. More than 90 % NOx conversion rate could be achieved over the Fe-based honeycomb catalyst at a low temperature by doping the catalysts with Ni and Zr at different weights. Among all the catalysts studied, the mixed metal catalyst of Fe-Ni-Zr is found the most potential one, not only because of its higher NOx conversion rate at a low temperature, but also because of its wider operation temperature window.

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Section: Introductionmentioning

confidence: 99%

Investigation of the Performance of Fe-Based Catalysts for NOx Reduction with NH3

Xiao

Zhou

Zhang³

et al. 2009

2009 Asia-Pacific Power and Energy Engineering Conference

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“…Iron-based catalysts have been extensively used in several processes related to NOx elimination, mainly due to their low cost compared with that of noble metals and their good performance with different reducing agents. It has been reported that Fe 2 O 3 , [10][11][12][13][14][15][16] Fe containing oxides [17][18][19] and Fe-exchanged materials [20][21][22][23][24] have greater SCR activity than other types of catalyst. The process of selective catalytic reduction of NOx at low temperature with ammonia has been investigated with metal Ni [25][26][27][28] and the results show that Ni is efficient for the reduction of NOx.…”

mentioning

confidence: 99%

An investigation into catalysts to improve low temperature performance in the selective catalytic reduction of NO with NH₃

Xiao¹,

Zhou²,

Zhang

et al. 2009

Journal of Marine Engineering & Technology

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Selective catalytic reduction with NH 3 is considered one of the most effective technologies controlling NOx emission. Metal Fe-based catalysts were used in the investigation to improve low temperature performance of NOx conversion. The temperature range studied was between 1508C and 3508C in increments of 508C. The honeycomb catalysts were prepared by an impregnation method. The study also included characterisation of catalysts by BET, XRD, H 2 -TPR and XPS methods.It was found that an increase in metal Fe content from 2 to 6% wt offered an improvement in the catalytic performance. However, a further increase in Fe content resulted in a decrease in its performance. More than 90% NOx conversion rate could be achieved over the Fe-based honeycomb catalyst at a low temperature by doping with different weights of Ni and Zr metals. Amongst all the catalysts studied, the mixed metal catalyst of Fe-Ni-Zr was the one with most potential. This was because of its higher NOx conversion rate at a low temperature and also because of its wider operating temperature window. The effect of gas hourly space velocity (GHSV) was also investigated and the results showed that as GHSV increased, the reduction of NOx decreased. AUTHORS' BIOGRAPHIESYouhong Xiao is a PhD student in the Department of Naval Architecture & Marine Engineering at the Universities of Glasgow and Strathclyde. His researches have identified catalysts that offer improved performances in SCR to reduce NOx from marine diesel engines. He is also a lecturer

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Electrochemical investigations on multi-metallic electrodes for amperometric NO gas sensors

Schmidt‐Zhang

Zhang

Gerlach

et al. 2005

Sensors and Actuators B: Chemical

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LOTUS: A Co-operation for Low Temperature Urea-Based Selective Catalytic Reduction of NOx

Cited by 7 publications

References 18 publications

Investigation of the Performance of Fe-Based Catalysts for NOx Reduction with NH3

Investigation of the Performance of Fe-Based Catalysts for NOx Reduction with NH3

An investigation into catalysts to improve low temperature performance in the selective catalytic reduction of NO with NH₃

Electrochemical investigations on multi-metallic electrodes for amperometric NO gas sensors

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LOTUS: A Co-operation for Low Temperature Urea-Based Selective Catalytic Reduction of NOx

Cited by 7 publications

References 18 publications

Investigation of the Performance of Fe-Based Catalysts for NOx Reduction with NH3

Investigation of the Performance of Fe-Based Catalysts for NOx Reduction with NH3

An investigation into catalysts to improve low temperature performance in the selective catalytic reduction of NO with NH3

Electrochemical investigations on multi-metallic electrodes for amperometric NO gas sensors

Contact Info

Product

Resources

About

An investigation into catalysts to improve low temperature performance in the selective catalytic reduction of NO with NH₃