{"id":2292,"date":"2021-11-24T09:53:36","date_gmt":"2021-11-24T08:53:36","guid":{"rendered":"https:\/\/site.uit.no\/nordco2\/?p=2292"},"modified":"2024-10-11T12:21:13","modified_gmt":"2024-10-11T10:21:13","slug":"joint-article-aarhus-kth","status":"publish","type":"post","link":"https:\/\/site.uit.no\/nordco2\/2021\/11\/24\/joint-article-aarhus-kth\/","title":{"rendered":"Joint Article: Aarhus & KTH"},"content":{"rendered":"

The research groups led by NordCO2<\/sub> PIs Kim Daasbjerg and Troels Skrydstrup from Aarhus as well as M\u00e5rten Ahlquist from KTH Royal Institute of Technology have released a new paper where they explore the effect of additives for the electroreduction of CO2<\/sub>\u00a0to HCOOH, using a manganese electrocatalyst. Congratulations to all authors!<\/p>\n

<\/p>\n

Title:<\/strong>
\nPromoting Selective Generation of Formic Acid from CO2<\/sub>\u00a0Using Mn(bpy)(CO)3<\/sub>Br as Electrocatalyst and Triethylamine\/Isopropanol as Additives<\/span><\/a><\/p>\n

Abstract:<\/strong>
\nUrgent solutions are needed to efficiently convert the greenhouse gas CO2<\/sub>\u00a0into higher-value products. In this work,\u00a0fac<\/i>-Mn(bpy)(CO)3<\/sub>Br (bpy = 2,2\u2032-bipyridine) is employed as electrocatalyst in reductive CO2<\/sub>\u00a0conversion. It is shown that product selectivity can be shifted from CO toward HCOOH using appropriate additives, i.e., Et3<\/sub>N along with\u00a0i<\/i>PrOH. A crucial aspect of the strategy is to outrun the dimer-generating parent-child reaction involving\u00a0fac<\/i>-Mn(bpy)(CO)3<\/sub>Br and [Mn(bpy)(CO)3<\/sub>]\u2212<\/sup>\u00a0and instead produce the Mn hydride intermediate. Preferentially, this is done at the first reduction wave to enable formation of HCOOH at an overpotential as low as 260 mV and with faradaic efficiency of 59 \u00b1 1%.\u00a0The latter may be increased to 71 \u00b1 3% at an overpotential of 560 mV, using 2 M concentrations of both Et3<\/sub>N and\u00a0i<\/i>PrOH. The nature of the amine additive is crucial for product selectivity, as the faradaic efficiency for HCOOH formation decreases to 13 \u00b1 4% if Et3<\/sub>N is replaced with Et2<\/sub>NH. The origin of this difference lies in the ability of Et3<\/sub>N\/i<\/i>PrOH to establish an equilibrium solution of isopropyl carbonate and CO2<\/sub>, while with Et2<\/sub>NH\/i<\/i>PrOH, formation of the diethylcarbamic acid is favored. According to density-functional theory calculations, CO2<\/sub>\u00a0in the former case can take part favorably in the catalytic cycle, while this is less opportune in the latter case because of the CO2<\/sub>-to-carbamic acid conversion. This work presents a straightforward procedure for electrochemical reduction of CO2<\/sub>\u00a0to HCOOH by combining an easily synthesized manganese catalyst with commercially available additives.<\/p>\n

Find a list of publications by\u00a0NordCO2<\/sub>\u00a0members on our Publications<\/a> page \ud83d\ude42<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

The research groups led by NordCO2 PIs Kim Daasbjerg and Troels Skrydstrup from Aarhus as well as M\u00e5rten Ahlquist from KTH Royal Institute of Technology …<\/p>\n","protected":false},"author":514,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"image","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[8],"tags":[],"class_list":["post-2292","post","type-post","status-publish","format-image","hentry","category-research","post_format-post-format-image"],"_links":{"self":[{"href":"https:\/\/site.uit.no\/nordco2\/wp-json\/wp\/v2\/posts\/2292","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/site.uit.no\/nordco2\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/site.uit.no\/nordco2\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/site.uit.no\/nordco2\/wp-json\/wp\/v2\/users\/514"}],"replies":[{"embeddable":true,"href":"https:\/\/site.uit.no\/nordco2\/wp-json\/wp\/v2\/comments?post=2292"}],"version-history":[{"count":3,"href":"https:\/\/site.uit.no\/nordco2\/wp-json\/wp\/v2\/posts\/2292\/revisions"}],"predecessor-version":[{"id":2516,"href":"https:\/\/site.uit.no\/nordco2\/wp-json\/wp\/v2\/posts\/2292\/revisions\/2516"}],"wp:attachment":[{"href":"https:\/\/site.uit.no\/nordco2\/wp-json\/wp\/v2\/media?parent=2292"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/site.uit.no\/nordco2\/wp-json\/wp\/v2\/categories?post=2292"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/site.uit.no\/nordco2\/wp-json\/wp\/v2\/tags?post=2292"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}