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However, small metal clusters are often highly susceptible to oxidation and prone to structural deformation on supports, which poses substantial challenges to experimental catalysis and theoretical calculations. In this study, we prepared pure Agn+ and Cun+ clusters and screened out superatomic clusters Ag9+ and Cu9+ by gas-phase reactions of sufficient collisions. We then deposited the two clusters onto different substrates using soft landing techniques. Characterization by X-ray photoelectron spectroscopy verified successful deposition and revealed that these superatomic clusters preserve unoxidized states at exposure to air, highlighting their unique stability rooted in superatomic eight-electron shell closure. We tested the catalysis of Ag9+ and Cu9+ clusters for acetylene hydrogenation and related hydrogen\u2013deuterium exchange reactions. The results revealed that the Cu9+ clusters on TiO2 exhibit superior catalytic activity, which is associated with the enhanced cluster\u2013support interactions and favorable H2 activation behavior. This study validates the applicability of superatom clusters for designing new catalysts, with enhanced stability and tailorable active sites.<\/jats:p>","DOI":"10.1021\/acs.jpclett.6c01676","type":"journal-article","created":{"date-parts":[[2026,7,15]],"date-time":"2026-07-15T19:16:07Z","timestamp":1784142967000},"page":"8699-8706","source":"Crossref","is-referenced-by-count":0,"title":["Soft-Landing\nDeposition of Superatomic Cu9+\/Ag9+ Clusters for Catalytic Hydrogenation\nof Acetylene"],"prefix":"10.1021","volume":"17","author":[{"given":"Benben","family":"Huang","sequence":"first","affiliation":[{"name":"Institute of Chemistry, Chinese Academy of Sciences , , ,","place":["Beijing, China, 100190"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ran","family":"Cheng","sequence":"additional","affiliation":[{"name":"Institute of Chemistry, Chinese Academy of Sciences , , ,","place":["Beijing, China, 100190"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wenqiang","family":"Ren","sequence":"additional","affiliation":[{"name":"Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences , ,","place":["Beijing, China, 100085"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mengzhou","family":"Yang","sequence":"additional","affiliation":[{"name":"Institute of Chemistry, Chinese Academy of Sciences , , ,","place":["Beijing, China, 100190"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Haiming","family":"Wu","sequence":"additional","affiliation":[{"name":"Institute of Chemistry, Chinese Academy of Sciences , , ,","place":["Beijing, China, 100190"]},{"name":"Tsinghua University , , ,","place":["Beijing, China, 100084"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5752-1996","authenticated-orcid":true,"given":"Zhixun","family":"Luo","sequence":"additional","affiliation":[{"name":"Institute of Chemistry, Chinese Academy of Sciences , , ,","place":["Beijing, China, 100190"]},{"name":"University of Chinese Academy of Sciences , , ,","place":["Beijing, China, 100190"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6570-0559","authenticated-orcid":true,"given":"Peter","family":"Lievens","sequence":"additional","affiliation":[{"name":"KU Leuven , , Celestijnenlaan 200d , ,","place":["Leuven, Belgium, BE-30001"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2026,7,15]]},"reference":[{"issue":"1","key":"2026073009074969900_cit1","doi-asserted-by":"publisher","first-page":"46","DOI":"10.1021\/jacs.7b10354","article-title":"Surface single-cluster\ncatalyst for N2-to-NH3 thermal conversion","volume":"140","author":"Ma","year":"2018","journal-title":"J. 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Stabilization of size-selected Pt\nclusters on Fe3O4(001) by smsi","volume":"13","author":"Kaiser","year":"2023","journal-title":"ACS Catal."},{"issue":"6724","key":"2026073009074969900_cit38","doi-asserted-by":"publisher","first-page":"915","DOI":"10.1126\/science.adp6034","article-title":"Nature\nof metal-support interaction for metal catalysts on oxide\nsupports","volume":"386","author":"Wang","year":"2024","journal-title":"Science"},{"issue":"6573","key":"2026073009074969900_cit39","doi-asserted-by":"publisher","first-page":"1360","DOI":"10.1126\/science.abi9828","article-title":"Sabatier principle\nof metal-support interaction for design of ultrastable\nmetal nanocatalysts","volume":"374","author":"Hu","year":"2021","journal-title":"Science"},{"key":"2026073009074969900_cit40","doi-asserted-by":"publisher","first-page":"20601","DOI":"10.1021\/jacs.2c06785","article-title":"Metal affinity\nof support dictates sintering of gold catalysts","volume":"144","author":"Liu","year":"2022","journal-title":"J. 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Ed."},{"key":"2026073009074969900_cit49","doi-asserted-by":"publisher","DOI":"10.1002\/smll.202404638","article-title":"The reactivity of Ptn+ clusters with N2O\nfacilitated by dual Lewis-acid sites","volume":"20","author":"Cui","year":"2024","journal-title":"Small"},{"key":"2026073009074969900_cit50","doi-asserted-by":"publisher","DOI":"10.1007\/978-981-15-9704-6","volume-title":"Metal Clusters\nand Their\nReactivity","author":"Luo","year":"2020"},{"issue":"1","key":"2026073009074969900_cit51","doi-asserted-by":"publisher","first-page":"5534","DOI":"10.1038\/s41467-022-33250-8","article-title":"Mechanism driven design of trimer Ni1Sb2 site delivering superior hydrogenation selectivity to ethylene","volume":"13","author":"Ge","year":"2022","journal-title":"Nat. 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