Year: 2024
Type: article
Abstract: High Resolution Image Download MS PowerPoint Slide Microwave-assisted oxide reduction has emerged as a promising method to electrify chemical looping processes for renewable hydrogen production. Moreover, these thermochemical cycles can be used for thermochemical air separation, electrifying the O 2 generation by applying microwaves in the reduction step. This approach offers an alternative to conventional cryogenic air separation, producing pure streams of O 2 and N 2 . The electrification by microwaves lowers the requirements for titanate perovskites (CaTi 1– x Mn x O 3−δ ), which typically demand high temperatures for thermochemical cycles. Microwave activation allows for a drastic reduction in the operation conditions of the reduction reaction, leading to unprecedentedly rapid absorption–desorption cycles (<3 min per cycle). For CaTi 0.8 Mn 0.2 O 3−δ, we achieved a cycle-averaged O 2 production of 2.6 mL g –1 min –1 at 800 °C, surpassing conventional values of materials operating in the high-temperature regime. This method could significantly impact thermochemical air separation by enabling a faster oxygen absorption–desorption cycle at more moderate temperatures than those of conventionally heated processes.
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,500
Funders: Instituto de Tecnología Química, Universidad Europea de Madrid, European Commission, Generalitat Valenciana, Ministerio de Ciencia e Innovación, Ministerio de Ciencia y Tecnología, Consejo Superior de Investigaciones Científicas, Universitat Politècnica de València, Agencia Estatal de Investigación, Conselleria d'Educació, Investigació, Cultura i Esport, NextGenerationEU
Awards: G1047231290, G1175115578, G120905174, G1272927172, G1422035950, G1479091377, G1482201912, G1530851820, G1561925909, G1855990336, G210041235, G2114305129, G2262748287, G2309174360, G2551911579, G2601397997, G279363373, G280048558, G300979063, G3220251042, G3287952880, G34346518, G3480869486, G3518538256, G357246561, G363809202, G3681454997, G3857581125, G393399257, G4042783231, G4249190604, G425668148, G430777504, G471480909, G4886622715, G5080475149, G531036588, G5421974903, G5452891538, G6080697404, G64668137, G6649954688, G726759913, G792975244, G8030011753, G8347645112, G8546142835, G855041801, G8903640942, G8920660035, G99296377
OpenAlex ID: W4405013000