S. Natarajan, Raja S., Pitchandi K., Sivachandiran Loganathan
{"title":"用于选择性催化还原氮氧化物的锑负载锰氧化物/二氧化钛/碳纳米管催化剂：对二氧化硫和水的耐受性的见解","authors":"S. Natarajan, Raja S., Pitchandi K., Sivachandiran Loganathan","doi":"10.1108/aeat-11-2023-0299","DOIUrl":null,"url":null,"abstract":"<h3>Purpose</h3>\n<p>This paper aims to synthesize and test Mn-Sb/TiO<sub>2</sub>-CNT catalysts with different Sb/Mn molar ratios to be used in NH<sub>3</sub>-SCR reaction.</p><!--/ Abstract__block -->\n<h3>Design/methodology/approach</h3>\n<p>A series of Sb-loaded carbon nanotubes (CNTs)-based Mn/TiO<sub>2</sub> catalysts were prepared by the incipient wetness co-impregnation method and tested for the selective catalytic reduction (SCR) of NOx with NH<sub>3</sub>.</p><!--/ Abstract__block -->\n<h3>Findings</h3>\n<p>The Sb-loaded Mn/TiO<sub>2</sub>-CNTs catalyst outperformed other catalysts and presented the highest activity in the temperature regime of 100–400°C. The catalyst loaded with Sb also showed good SO<sub>2</sub> and H<sub>2</sub>O resistance and exhibited better thermal stability. A stepwise study of SO<sub>2</sub> addition evidenced that Mn-Sb/TiO<sub>2</sub>-CNTs catalyst exhibited better SO<sub>2</sub> resistance than the base catalyst Mn/TiO<sub>2</sub>, where the Sb doping greatly inhibited the sulphating of active phase of the catalyst.</p><!--/ Abstract__block -->\n<h3>Originality/value</h3>\n<p>In Sb-loaded catalysts, the formed SOx species fused with SbOx instead of MnOx. This favoured interaction of SO<sub>2</sub> with SbOx successfully prevents the MnOx from being sulphated by SO<sub>2</sub> which substantially improves the SO<sub>2</sub> tolerance of Sb-loaded catalysts.</p><!--/ Abstract__block -->","PeriodicalId":55540,"journal":{"name":"Aircraft Engineering and Aerospace Technology","volume":"77 1","pages":""},"PeriodicalIF":1.2000,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Sb-loaded MnOx/TiO2/CNTs catalysts for selective catalytic reduction of NOx: insight to the SO2 and H2O tolerance\",\"authors\":\"S. Natarajan, Raja S., Pitchandi K., Sivachandiran Loganathan\",\"doi\":\"10.1108/aeat-11-2023-0299\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<h3>Purpose</h3>\\n<p>This paper aims to synthesize and test Mn-Sb/TiO<sub>2</sub>-CNT catalysts with different Sb/Mn molar ratios to be used in NH<sub>3</sub>-SCR reaction.</p><!--/ Abstract__block -->\\n<h3>Design/methodology/approach</h3>\\n<p>A series of Sb-loaded carbon nanotubes (CNTs)-based Mn/TiO<sub>2</sub> catalysts were prepared by the incipient wetness co-impregnation method and tested for the selective catalytic reduction (SCR) of NOx with NH<sub>3</sub>.</p><!--/ Abstract__block -->\\n<h3>Findings</h3>\\n<p>The Sb-loaded Mn/TiO<sub>2</sub>-CNTs catalyst outperformed other catalysts and presented the highest activity in the temperature regime of 100–400°C. The catalyst loaded with Sb also showed good SO<sub>2</sub> and H<sub>2</sub>O resistance and exhibited better thermal stability. A stepwise study of SO<sub>2</sub> addition evidenced that Mn-Sb/TiO<sub>2</sub>-CNTs catalyst exhibited better SO<sub>2</sub> resistance than the base catalyst Mn/TiO<sub>2</sub>, where the Sb doping greatly inhibited the sulphating of active phase of the catalyst.</p><!--/ Abstract__block -->\\n<h3>Originality/value</h3>\\n<p>In Sb-loaded catalysts, the formed SOx species fused with SbOx instead of MnOx. This favoured interaction of SO<sub>2</sub> with SbOx successfully prevents the MnOx from being sulphated by SO<sub>2</sub> which substantially improves the SO<sub>2</sub> tolerance of Sb-loaded catalysts.</p><!--/ Abstract__block -->\",\"PeriodicalId\":55540,\"journal\":{\"name\":\"Aircraft Engineering and Aerospace Technology\",\"volume\":\"77 1\",\"pages\":\"\"},\"PeriodicalIF\":1.2000,\"publicationDate\":\"2024-07-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Aircraft Engineering and Aerospace Technology\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1108/aeat-11-2023-0299\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, AEROSPACE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Aircraft Engineering and Aerospace Technology","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1108/aeat-11-2023-0299","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, AEROSPACE","Score":null,"Total":0}
Sb-loaded MnOx/TiO2/CNTs catalysts for selective catalytic reduction of NOx: insight to the SO2 and H2O tolerance
Purpose
This paper aims to synthesize and test Mn-Sb/TiO2-CNT catalysts with different Sb/Mn molar ratios to be used in NH3-SCR reaction.
Design/methodology/approach
A series of Sb-loaded carbon nanotubes (CNTs)-based Mn/TiO2 catalysts were prepared by the incipient wetness co-impregnation method and tested for the selective catalytic reduction (SCR) of NOx with NH3.
Findings
The Sb-loaded Mn/TiO2-CNTs catalyst outperformed other catalysts and presented the highest activity in the temperature regime of 100–400°C. The catalyst loaded with Sb also showed good SO2 and H2O resistance and exhibited better thermal stability. A stepwise study of SO2 addition evidenced that Mn-Sb/TiO2-CNTs catalyst exhibited better SO2 resistance than the base catalyst Mn/TiO2, where the Sb doping greatly inhibited the sulphating of active phase of the catalyst.
Originality/value
In Sb-loaded catalysts, the formed SOx species fused with SbOx instead of MnOx. This favoured interaction of SO2 with SbOx successfully prevents the MnOx from being sulphated by SO2 which substantially improves the SO2 tolerance of Sb-loaded catalysts.
期刊介绍：
Aircraft Engineering and Aerospace Technology provides a broad coverage of the materials and techniques employed in the aircraft and aerospace industry. Its international perspectives allow readers to keep up to date with current thinking and developments in critical areas such as coping with increasingly overcrowded airways, the development of new materials, recent breakthroughs in navigation technology - and more.
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