期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 255, 期 -, 页码 -出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2019.117779
关键词
CO2 utilization; Solar fuel
资金
- MiUR (Ministry of University Research of Italy) [PON 01_02257]
- PON Ricerca e competitivita 2007-2013 [930/RIC 09-11-2011]
We investigated CO2 photocatalytic reduction coupling, for the first time in literature, the assets offered by the continuous operating mode using C3N4-TiO2 photo-catalyst embedded in a dense Nafion matrix. The reactor performance was analyzed under UV-vis light in terms of productivity, selectivity and converted carbon. Reaction pressure was specifically investigated for its effect as a driver in determining reactor performance, modulating products removal from the reaction volume. In addition, the membrane reactor performance was explored as a function of H2O/CO2 feed molar ratio and contact time. The higher feed pressure (5 bar) led to a lesser MeOH production and a greater amount of HCHO, owing to a hindered desorption, which promoted partial oxidation reactions. Total converted carbon instead did not vary significantly with reaction pressure. Membrane reactor with C3N4-TiO2 photocatalyst resulted more performant than other photocatalytic membrane reactors in terms of carbon converted (61 mu mol g(catalyst)(-1) h(-1)).
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