{"id":479,"date":"2019-09-17T14:38:28","date_gmt":"2019-09-17T12:38:28","guid":{"rendered":"https:\/\/interkat.com\/?page_id=479"},"modified":"2019-09-17T14:38:29","modified_gmt":"2019-09-17T12:38:29","slug":"catalysts-for-selective-catalytic-reduction-scr","status":"publish","type":"page","link":"https:\/\/interkat.com\/en\/technologies\/catalysts-for-selective-catalytic-reduction-scr\/","title":{"rendered":"Catalysts for Selective Catalytic Reduction (SCR)"},"content":{"rendered":"\n<p>Nitrogen\noxides (NO<sub>X<\/sub>) consist of nitric oxide (NO) and nitrogen dioxide (NO<sub>2<\/sub>)\nwhich are known to cause irritations of the respiratory system and are\nresponsible for the formation of acid rain as well as smog. Due to these\nreasons there are harsh thresholds by the governments globally in order to\nminimize the NO<sub>X<\/sub> emissions which are mainly caused during combustion\nprocesses like in combustion engines or industrial applications.<\/p>\n\n\n\n<p>The most\nestablished method to reduce NO<sub>X<\/sub> emissions is the utilization of a\nSCR catalyst (selective catalytic reduction). For this process a reducing agent\n(mainly ammonia, NH<sub>3<\/sub>), is required. The ammonia is usually formed&nbsp; &nbsp;by decomposition\nof 32.5 % aqueous urea solution (trade name &#8220;AdBlue&#8221;), which is\ninjected into the exhaust pipe upstream of the SCR catalyst. The ammonia reacts\nselectively with the nitrogen oxides to harmless nitrogen (N<sub>2<\/sub>) and\nwater (H<sub>2<\/sub>O) in the presence of the catalyst.<\/p>\n\n\n\n<h6 class=\"wp-block-heading\">Standard SCR reaction with\nNO only:<\/h6>\n\n\n\n<p>4 NH<sub>3<\/sub> + 4 NO + O<sub>2<\/sub> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \u2192 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 4\nN<sub>2<\/sub> + 6 H<sub>2<\/sub>O<\/p>\n\n\n\n<h6 class=\"wp-block-heading\">Fast SCR reaction with NO\nand NO<sub>2<\/sub>:<\/h6>\n\n\n\n<p>4 NH<sub>3<\/sub> + 2 NO + 2 NO<sub>2<\/sub> &nbsp;&nbsp; \u2192 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 4\nN<sub>2<\/sub> + 6 H<sub>2<\/sub>O<\/p>\n\n\n\n<h6 class=\"wp-block-heading\">Slow SCR reaction with NO<sub>2<\/sub>\nonly:<\/h6>\n\n\n\n<p>4 NH<sub>3<\/sub> + 3 NO<sub>2<\/sub>&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \u2192&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3,5 N<sub>2<\/sub> + 6 H<sub>2<\/sub>O<\/p>\n\n\n\n<p>INTERKAT\nprovides SCR catalysts based on vanadia \/titania and zeolite technology,\nrespectively. Depending on the requirements of the customer we find the optimal\ncatalyst for the application and the specific operation temperature.<\/p>\n\n\n\n<p>Especially\nour latest development of a high temperature stable SCR catalyst based on the\ncost-effective and sulphur stable vanadia\/titania technology is becoming a\nleading product for all applications with temperature peaks above 500 \u00b0C. A\nmaximum temperature of 650 \u00b0C makes this vanadia catalyst unique.<\/p>\n\n\n\n<p><strong>\u201cINTERKAT\nwill always provide the optimal catalyst for your application\u201d<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nitrogen oxides (NOX) consist of nitric oxide (NO) and nitrogen dioxide (NO2) which are known to cause irritations of the respiratory system and are responsible for the formation of acid rain as well as smog. Due to these reasons there are harsh thresholds by the governments globally in order to minimize the NOX emissions which<a class=\"excerpt-read-more\" href=\"https:\/\/interkat.com\/en\/technologies\/catalysts-for-selective-catalytic-reduction-scr\/\" title=\"ReadCatalysts for Selective Catalytic Reduction (SCR)\">&#8230; Read more &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":10,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"template-product-oxi.php","meta":{"_acf_changed":false,"advgb_blocks_editor_width":"","advgb_blocks_columns_visual_guide":"","footnotes":""},"class_list":["post-479","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Catalysts for Selective Catalytic Reduction (SCR) - Interkat<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/interkat.com\/en\/technologies\/catalysts-for-selective-catalytic-reduction-scr\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Catalysts for Selective Catalytic Reduction (SCR) - Interkat\" \/>\n<meta property=\"og:description\" content=\"Nitrogen oxides (NOX) consist of nitric oxide (NO) and nitrogen dioxide (NO2) which are known to cause irritations of the respiratory system and are responsible for the formation of acid rain as well as smog. 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Due to these reasons there are harsh thresholds by the governments globally in order to minimize the NOX emissions which... 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