{"id":26773,"date":"2016-08-31T23:45:57","date_gmt":"2016-08-31T21:45:57","guid":{"rendered":"https:\/\/icmsva.vallealto.es\/?articulos_sci=monolithic-supports-based-on-biomorphic-sic-for-the-catalytic-combustion-of-hydrogen"},"modified":"2026-04-14T11:46:54","modified_gmt":"2026-04-14T09:46:54","slug":"monolithic-supports-based-on-biomorphic-sic-for-the-catalytic-combustion-of-hydrogen","status":"publish","type":"articulos_sci","link":"https:\/\/icmsva.vallealto.es\/?articulos_sci=monolithic-supports-based-on-biomorphic-sic-for-the-catalytic-combustion-of-hydrogen","title":{"rendered":"Monolithic supports based on biomorphic SiC for the catalytic combustion of hydrogen"},"content":{"rendered":"<figure><img decoding=\"async\" src=\"https:\/\/icmsva.vallealto.es\/wp-content\/uploads\/2016\/08\/Monolithic-supports-based-on-biomorphic-SiC-for-th-1.gif\" alt=\"Monolithic supports based on biomorphic SiC for the catalytic combustion of hydrogen\" \/><\/figure>\n<p>Catalytic hydrogen combustion was studied with H-2\/air mixtures in conditions that simulate the H-2 concentration of the exhaust gases from fuel cells (3-4% v\/v H-2 in air). Pt-impregnated monoliths based on porous biomorphic SiC (bio-SiC) substrates were employed for the first time for this reaction. Capillary forces were exploited for the incipient impregnation of supports with H2PtCl6 solutions. Freeze drying permitted us to obtain a homogeneous distribution of the active phase reducing accumulation at the monolith&#8217;s outer shell. The supports and catalysts were characterized from a structural and thermal point of view. Catalytic tests were performed in a homemade reactor fed with up to 1000 ml min(-1) H-2\/air mixtures and a diffusional regime (non-isothermal) was achieved in the selected conditions. Catalyst loading was tested in the range of 0.25-1.5 wt% Pt and 100% conversion was achieved in all cases. Temperatures were recorded at different points of the monoliths during the reaction showing anisotropic thermal behavior for selected bio-SiC substrates. These effects are of interest for heat management applications and were explained in correlation with thermal conductivity measurements performed on the supports. Pt-impregnated monoliths were also tested in less than 100% conversion conditions (1% v\/v H-2 in air) and in powder form in kinetic conditions for comparative purposes.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Catalytic hydrogen combustion was studied with H-2\/air mixtures in conditions that simulate the H-2 concentration of the exhaust gases from fuel cells (3-4% v\/v H-2 in air). Pt-impregnated monoliths based on porous biomorphic SiC (bio-SiC) substrates were employed for the first time for this reaction. Capillary forces were exploited for the incipient impregnation of supports&hellip;<\/p>\n","protected":false},"featured_media":26777,"template":"","autores":[],"grupos_de_investigacion":[6508],"revistas":[314],"anos":[889],"destacados":[],"class_list":["post-26773","articulos_sci","type-articulos_sci","status-publish","has-post-thumbnail","hentry","grupos_de_investigacion-materiales-para-energia-y-sostenibilidad","revistas-rsc-advances","anos-889","description-off"],"acf":[],"_links":{"self":[{"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=\/wp\/v2\/articulos_sci\/26773","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\/26773\/revisions"}],"predecessor-version":[{"id":26779,"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=\/wp\/v2\/articulos_sci\/26773\/revisions\/26779"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=\/wp\/v2\/media\/26777"}],"wp:attachment":[{"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=26773"}],"wp:term":[{"taxonomy":"autores","embeddable":true,"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=%2Fwp%2Fv2%2Fautores&post=26773"},{"taxonomy":"grupos_de_investigacion","embeddable":true,"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=%2Fwp%2Fv2%2Fgrupos_de_investigacion&post=26773"},{"taxonomy":"revistas","embeddable":true,"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=%2Fwp%2Fv2%2Frevistas&post=26773"},{"taxonomy":"anos","embeddable":true,"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=%2Fwp%2Fv2%2Fanos&post=26773"},{"taxonomy":"destacados","embeddable":true,"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=%2Fwp%2Fv2%2Fdestacados&post=26773"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}