{"id":6209,"date":"2023-11-13T14:56:25","date_gmt":"2023-11-13T13:56:25","guid":{"rendered":"https:\/\/www.techscale.cz\/?p=6209"},"modified":"2023-12-06T09:09:14","modified_gmt":"2023-12-06T08:09:14","slug":"vedci-vylepsili-zpusob-vyroby-amoniaku","status":"publish","type":"post","link":"https:\/\/www.techscale.cz\/cs\/2023\/11\/13\/vedci-vylepsili-zpusob-vyroby-amoniaku\/","title":{"rendered":"V\u011bdci vylep\u0161ili zp\u016fsob v\u00fdroby amoniaku"},"content":{"rendered":"[vc_row type=“in_container“ full_screen_row_position=“middle“ column_margin=“default“ column_direction=“default“ column_direction_tablet=“default“ column_direction_phone=“default“ scene_position=“center“ text_color=“dark“ text_align=“left“ row_border_radius=“none“ row_border_radius_applies=“bg“ overflow=“visible“ overlay_strength=“0.3″ gradient_direction=“left_to_right“ shape_divider_position=“bottom“ bg_image_animation=“none“][vc_column column_padding=“no-extra-padding“ column_padding_tablet=“inherit“ column_padding_phone=“inherit“ column_padding_position=“all“ column_element_direction_desktop=“default“ column_element_spacing=“default“ desktop_text_alignment=“default“ tablet_text_alignment=“default“ phone_text_alignment=“default“ background_color_opacity=“1″ background_hover_color_opacity=“1″ column_backdrop_filter=“none“ column_shadow=“none“ column_border_radius=“none“ column_link_target=“_self“ column_position=“default“ gradient_direction=“left_to_right“ overlay_strength=“0.3″ width=“1\/1″ tablet_width_inherit=“default“ animation_type=“default“ bg_image_animation=“none“ border_type=“simple“ column_border_width=“none“ column_border_style=“solid“][vc_column_text el_id=“perex“]\n

V\u00fdznamn\u00fd krok na cest\u011b k efektivn\u011bj\u0161\u00ed a udr\u017eiteln\u011bj\u0161\u00ed v\u00fdrob\u011b amoniaku p\u0159edstavili v\u011bdci z\u00a0CEITEC Energy na Vysok\u00e9m u\u010den\u00ed technick\u00e9m v\u00a0Brn\u011b, \u00a0CATRIN Univerzity Palack\u00e9ho v\u00a0Olomouci a n\u00e1rodn\u00edho superpo\u010d\u00edta\u010dov\u00e9ho centra IT4innovations na V\u0160B-TUO ve studii publikovan\u00e9 v\u00a0presti\u017en\u00edm \u010dasopise ACS Applied Materials & Interfaces<\/a>. P\u0159i elektrochemick\u00e9 redukci dusi\u010dnanu na amoniak vyu\u017eili jako katalyz\u00e1tor aktivovan\u00fd materi\u00e1l na b\u00e1zi kovov\u011b-organick\u00fdch s\u00edt\u00ed (MOF, z\u00a0angl. Metal-Organic Framework). Pr\u00e1v\u011b tyto materi\u00e1ly se ukazuj\u00ed jako velmi vhodn\u00e9 pro zlep\u0161en\u00ed energetick\u00e9 n\u00e1ro\u010dnosti \u0159ady pr\u016fmyslov\u011b v\u00fdznamn\u00fdch reakc\u00ed, co\u017e v\u011bdci v\u00a0tomto konkr\u00e9tn\u00edm p\u0159\u00edpad\u011b prok\u00e1zali jak teoretick\u00fdmi v\u00fdpo\u010dty, tak experiment\u00e1ln\u011b. <\/strong><\/h2>\n[\/vc_column_text][divider line_type=“No Line“ custom_height=“50″][vc_column_text]\n

<\/h3>\n

Elektrochemick\u00e1 redukce dusi\u010dnanu na amoniak pat\u0159\u00ed mezi nad\u011bjn\u00e1 \u0159e\u0161en\u00ed pro zvl\u00e1d\u00e1n\u00ed v\u00fdzev vyvolan\u00fdch rostouc\u00ed energetickou popt\u00e1vkou a snahou sni\u017eovat negativn\u00ed dopady na \u017eivotn\u00ed prost\u0159ed\u00ed. Dusi\u010dnany, kter\u00e9 se \u0159ad\u00ed mezi b\u011b\u017en\u00e9 zne\u010di\u0161\u0165uj\u00edc\u00ed l\u00e1tky nap\u0159\u00edklad ve vod\u00e1ch, mohou tak\u00e9 slou\u017eit jako vhodn\u00fd zdroj dus\u00edku p\u0159i synt\u00e9ze amoniaku. Amoniak je v\u00fdznamn\u00fdm pr\u016fmyslov\u00fdm produktem, ale jeho v\u00fdroba je velmi energeticky n\u00e1ro\u010dn\u00e1, s\u00a0p\u0159ibli\u017en\u011b dvouprocentn\u00edm dopadem na celosv\u011btov\u00e9 emise oxidu uhli\u010dit\u00e9ho. V\u011bdci proto zam\u011b\u0159ili pozornost na zkoum\u00e1n\u00ed nov\u00fdch elektrokatalytick\u00fdch materi\u00e1l\u016f, kter\u00e9 dovedou p\u0159em\u011bnu dusi\u010dnanu na amoniak urychlit.<\/p>\n

\u201eKovov\u011b-organick\u00e9 s\u00edt\u011b (MOF) jsou intenzivn\u011b studovan\u00e9 materi\u00e1ly, kter\u00e9 maj\u00ed \u0161irok\u00e9 vyu\u017eit\u00ed. N\u00e1\u0161 t\u00fdm se zam\u011b\u0159il na schopnost MOF obsahuj\u00edc\u00edch \u017eelezo katalyzovat elektrochemickou p\u0159em\u011bnu \u00a0dusi\u010dnan\u016f na amoniak. Kolegov\u00e9 z\u00a0Brna uk\u00e1zali, \u017ee studovan\u00fd katalyz\u00e1tor dosahuje ohromuj\u00edc\u00ed devades\u00e1tiprocentn\u00ed \u00fa\u010dinnosti a posouv\u00e1 hranice v\u00a0t\u00e9to oblasti elektrokatal\u00fdzy.\u00a0 Objasn\u011bn\u00ed mechanismu pomoc\u00ed n\u00e1ro\u010dn\u00fdch po\u010d\u00edta\u010dov\u00fdch simulac\u00ed jsme prov\u00e1d\u011bli na KAROLIN\u011a, v\u00a0sou\u010dasnosti nejv\u00fdkonn\u011bj\u0161\u00edm superpo\u010d\u00edta\u010di v\u00a0\u010cR. Pochopen\u00ed mechanismu toti\u017e nab\u00edz\u00ed unik\u00e1tn\u00ed pohled, kter\u00fd lze v\u00a0budoucnu vyu\u017e\u00edt k\u00a0dal\u0161\u00edmu zlep\u0161ov\u00e1n\u00ed t\u00e9to t\u0159\u00eddy katalyz\u00e1tor\u016f,\u201c uvedl jeden z\u00a0autor\u016f \u010dl\u00e1nku Michal Otyepka z\u00a0CATRIN a IT4Innovations.<\/p>\n

Pr\u00e1ce jasn\u011b ukazuje, jak se vz\u00e1jemn\u011b skv\u011ble dopl\u0148uj\u00ed poznatky z\u00a0experiment\u016f a po\u010d\u00edta\u010dov\u00fdch simulac\u00ed. Integrace v\u00fdpo\u010detn\u00edch a experiment\u00e1ln\u00edch p\u0159\u00edstup\u016f pat\u0159\u00ed mezi jeden z\u00a0pil\u00ed\u0159\u016f projektu TECHSCALE, jen\u017e c\u00edl\u00ed na v\u00fdvoj nov\u00fdch materi\u00e1l\u016f a p\u0159\u00edstup\u016f, kter\u00e9 v\u00fdrazn\u011b posunou sou\u010dasn\u00e9 hranice v\u00fdzkumu v\u00a0oblasti nanomateri\u00e1l\u016f a\u017e na n\u00e1vrh nov\u00fdch materi\u00e1l\u016f s\u00a0atomovou p\u0159esnost\u00ed.<\/p>\n

\u201eD\u00edky skv\u011ble funguj\u00edc\u00ed spolupr\u00e1ci jsme z\u00edskali komplexn\u00ed informace nejen o chov\u00e1n\u00ed, ale zejm\u00e9na o dal\u0161\u00edm potenci\u00e1lu tohoto materi\u00e1lu. Jsou to d\u016fle\u017eit\u00e1 zji\u0161t\u011bn\u00ed pro efektivn\u011bj\u0161\u00ed a \u0161etrn\u011bj\u0161\u00ed redukci odpadn\u00edch dusi\u010dnan\u016f na amoniak, ale otev\u00edraj\u00ed tak\u00e9 nov\u00e9 mo\u017enosti pro v\u00fdzkumn\u00edky, kte\u0159\u00ed by cht\u011bli upravit nebo povrchov\u011b modifikovat materi\u00e1ly k\u00a0p\u0159\u00edprav\u011b elektrokatalyz\u00e1tor\u016f pro dal\u0161\u00ed pr\u016fmyslov\u011b v\u00fdznamn\u00e9 katalytick\u00e9 reakce,\u201c zd\u016fraznil Martin Pumera z\u00a0CEITEC Energy<\/a> v\u00a0Brn\u011b, kter\u00fd tento v\u00fdzkum vedl.<\/p>\n

Publikace je tak\u00e9 jedn\u00edm z prvn\u00edch v\u00fdstup\u016f projektu TECHSCALE, jen\u017e z\u00edskal finan\u010dn\u00ed podporu t\u00e9m\u011b\u0159 500 milion\u016f korun ve v\u00fdzv\u011b \u0160pi\u010dkov\u00fd v\u00fdzkum z opera\u010dn\u00edho programu Jan Amos Komensk\u00fd a v konkurenci t\u00e9m\u011b\u0159 stovky projekt\u016f dos\u00e1hl druh\u00e9ho nejvy\u0161\u0161\u00edho hodnocen\u00ed.\u00a0 C\u00edlem v\u00fdzkumn\u00edk\u016f je vyv\u00edjet nov\u00e9 nanomateri\u00e1ly a technologie, kter\u00e9 p\u0159isp\u011bj\u00ed k \u0159e\u0161en\u00ed dvou aktu\u00e1ln\u00edch glob\u00e1ln\u00edch v\u00fdzev, jimi\u017e je z\u00edsk\u00e1v\u00e1n\u00ed a ukl\u00e1d\u00e1n\u00ed obnoviteln\u00e9 energie a v\u00fdvoj nov\u00fdch materi\u00e1l\u016f pro zlep\u0161en\u00ed kvality \u017eivota. Sou\u010d\u00e1st\u00ed projektu bude tak\u00e9 posuzov\u00e1n\u00ed spole\u010densk\u00fdch dopad\u016f a p\u0159ijet\u00ed nov\u00fdch technologi\u00ed ze strany ve\u0159ejnosti. P\u0159i \u0159e\u0161en\u00ed projektu se pod veden\u00edm fyzik\u00e1ln\u00edho chemika Michala Otyepky propoj\u00ed v\u00fdzkumn\u00edci z CATRIN a p\u011bti fakult Univerzity Palack\u00e9ho s v\u011bdci z Univerzity Karlovy a CEITEC VUT.[\/vc_column_text][\/vc_column][\/vc_row]\n","protected":false},"excerpt":{"rendered":"

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