2026-08-06T03:19:10Z https://icatplus.esrf.fr/oaipmh/request

oai:icatplus.esrf.fr:inv/2262428948 2025-12-09T07:00:46.375Z

4.2 EI 10.15151/ESRF-ES-2262428948 LIYA SHERLY LEO Liya Sherly Leo Dragos Constantin STOIAN Dragos Constantin Stoian 0000-0002-2436-6483 LIYA SHERLY LEO Liya Sherly Leo Henrik Erring HANSEN Henrik Erring Hansen 0000-0001-8486-0654 Henrik Erring HANSEN Henrik Erring Hansen 0000-0001-8486-0654 Duygu GUMUS TORVUND Duygu Gumus Torvund Duygu GUMUS TORVUND Duygu Gumus Torvund Karina MATHISEN Karina Mathisen 0000-0001-8199-7559 Karina MATHISEN Karina Mathisen 0000-0001-8199-7559 Svein SUNDE Svein Sunde 0000-0003-3711-8822 Svein SUNDE Svein Sunde 0000-0003-3711-8822 Example Institute 2028 Data from large facility measurement 2025-12-04T07:00:00Z/2025-12-09T07:00:00Z 2025-12-09T07:00:00Z I CC-BY-4.0 In order to utilize Cu(II) as a catalytic site for deNOx-processes, the Cu(II) active sites must be protected from autoreduction and aggregation. Incorporating Cu(II) into the microporous framework of SAPO-34 has been shown to yield single site Cu(II), which are protected from autoreduction and aggregation. The incorporation process in the micropores can happen when Cu replaces either Al, P, or Si in the SAPO-34 framework. Changes in the Al, P, or Si-content before the crystallization step could therefore offer new ways in which Cu is incorporated, which could lead to changes in the catalytic activity as well. Preliminary activity measurements has revealed that changing the Si content radically changed the activity and selectivity of the catalysts. Monitoring the local environment of the Cu(II) active sites in-situ could therefore reveal exactly why these changes in catalytic activity occur when we change the precursor concentration in the synthesis of SAPO-34.