2026-10-11T15:10:37Z https://api.figshare.com/v2/oai

oai:figshare.com:article/33985999 2026-09-24T14:04:17Z category_7 category_15 category_21 category_24 category_873 category_132 category_135 portal_63 item_type_3 month_year_09_2026

Amorphous Interface-Confined Acetylene Semireduction under Industrially Relevant Acetylene-Lean Feeds Yaoxin Dai (25104319) Laichun Zhao (25104322) Bufeng Zhang (2300311) Zhen Liu (74646) Shuangyin Wang (1288146) Shuaijun Pan (2002393) Medicine Neuroscience Biotechnology Evolutionary Biology Chemical Sciences not elsewhere classified Infectious Diseases Computational Biology stabilizing active sites parasitic hydrogen evolution molecular ligand modification exposed active sites confined reaction environment confined design concept selective acetylene semireduction industrially relevant acetylene enriches acetylene near confined acetylene semireduction selective gas electrocatalysis unity ethylene selectivity amorphous organic corona trace acetylene gas upgrading withdrawing ligands typically crystalline tunable chemistry sustainable pathway readily occur lean streams key intermediates findings establish electrochemical removal conventional catalysts competing reactions catalyst surface broader implications 5 ppm 310 h Selectively converting gaseous reactants via electrochemistry under industrially relevant lean feeds represents a green and sustainable pathway for gas upgrading and purification, yet achieving high selectivity remains challenging. Conventional catalysts are typically crystalline, with well-exposed active sites where competing reactions can readily occur, for example, parasitic hydrogen evolution and C–C coupling during electrochemical removal of trace acetylene from acetylene-lean streams. Here, we create an interface-confined reaction environment for selective acetylene semireduction into ethylene by introducing an amorphous corona onto crystalline Cu catalysts using electron-withdrawing ligands. The corona, with tunable chemistry and thickness, enriches acetylene near the catalyst surface while stabilizing active sites and key intermediates, thereby regulating reaction pathways. The optimized system achieves near-unity ethylene selectivity with strongly suppressed parasitic reactions, enabling efficient acetylene removal to below 5 ppm for 310 h. These findings establish the amorphous organic corona as a functional catalytic phase rather than merely a molecular ligand modification, and demonstrate its promise as an interface-confined design concept for selective gas electrocatalysis, with broader implications for gas upgrading and purification. 2026-09-24T00:00:00Z Dataset Dataset 10.1021/jacs.6c12149.s001 https://figshare.com/articles/dataset/Amorphous_Interface-Confined_Acetylene_Semireduction_under_Industrially_Relevant_Acetylene-Lean_Feeds/33985999 CC BY-NC 4.0