{"id":26225,"date":"2018-01-31T23:53:55","date_gmt":"2018-01-31T22:53:55","guid":{"rendered":"https:\/\/icmsva.vallealto.es\/?articulos_sci=in-situ-monitoring-of-the-phenomenon-of-electrochemical-promotion-of-catalysis"},"modified":"2026-04-14T11:46:06","modified_gmt":"2026-04-14T09:46:06","slug":"in-situ-monitoring-of-the-phenomenon-of-electrochemical-promotion-of-catalysis","status":"publish","type":"articulos_sci","link":"https:\/\/icmsva.vallealto.es\/?articulos_sci=in-situ-monitoring-of-the-phenomenon-of-electrochemical-promotion-of-catalysis","title":{"rendered":"In situ monitoring of the phenomenon of electrochemical promotion of catalysis"},"content":{"rendered":"<figure><img decoding=\"async\" src=\"https:\/\/icmsva.vallealto.es\/wp-content\/uploads\/2018\/01\/In-situ-monitoring-of-the-phenomenon-of-electroche-1.png\" alt=\"In situ monitoring of the phenomenon of electrochemical promotion of catalysis\" \/><\/figure>\n<p>In this work we investigate by in-situ near-ambient pressure photoemission (NAPP) spectroscopy the phenomenon of Electrochemical Promotion of Catalysis (EPOC). We studied the reduction and diffusion kinetics of alkaline ions in a solid electrolyte cell formed by a nickel electrode supported on K+-beta-alumina electrolyte. Experiments in ultra-high vacuum and in the presence of steam showed that the amount of potassium atoms supplied to the surface is probably affected by nickel electronic modifications induced by adsorbed OH- groups. It was also deduced that part of the segregated potassium would be adsorbed at inner interfaces where it would be inaccessible to the photoelectron analyzer. A migration mechanism of the promoter is proposed consisting in: (i) the electrochemical reduction of the alkali ions (potassium) at the Ni\/solid electrolyte\/gas interface; (ii) the spillover of potassium atoms onto the Ni gas-exposed surface; and (iii) the diffusion of potassium atoms to Ni inner grain boundary interfaces.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In this work we investigate by in-situ near-ambient pressure photoemission (NAPP) spectroscopy the phenomenon of Electrochemical Promotion of Catalysis (EPOC). We studied the reduction and diffusion kinetics of alkaline ions in a solid electrolyte cell formed by a nickel electrode supported on K+-beta-alumina electrolyte. Experiments in ultra-high vacuum and in the presence of steam showed&hellip;<\/p>\n","protected":false},"featured_media":26229,"template":"","autores":[],"grupos_de_investigacion":[142],"revistas":[284],"anos":[887],"class_list":["post-26225","articulos_sci","type-articulos_sci","status-publish","has-post-thumbnail","hentry","grupos_de_investigacion-nanotecnologia-en-superficies-y-plasma","revistas-journal-of-catalysis","anos-887","description-off"],"acf":[],"_links":{"self":[{"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=\/wp\/v2\/articulos_sci\/26225","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=\/wp\/v2\/articulos_sci"}],"about":[{"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=\/wp\/v2\/types\/articulos_sci"}],"version-history":[{"count":1,"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=\/wp\/v2\/articulos_sci\/26225\/revisions"}],"predecessor-version":[{"id":26230,"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=\/wp\/v2\/articulos_sci\/26225\/revisions\/26230"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=\/wp\/v2\/media\/26229"}],"wp:attachment":[{"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=26225"}],"wp:term":[{"taxonomy":"autores","embeddable":true,"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=%2Fwp%2Fv2%2Fautores&post=26225"},{"taxonomy":"grupos_de_investigacion","embeddable":true,"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=%2Fwp%2Fv2%2Fgrupos_de_investigacion&post=26225"},{"taxonomy":"revistas","embeddable":true,"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=%2Fwp%2Fv2%2Frevistas&post=26225"},{"taxonomy":"anos","embeddable":true,"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=%2Fwp%2Fv2%2Fanos&post=26225"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}