Size effect of the active sites in UiO-66-supported nickel catalysts synthesized via atomic layer deposition for ethylene hydrogenation12. Issue 5 (9th March 2017)

• Record Type: Journal Article
• Authors: Li, Zhanyong; Peters, Aaron W.; Liu, Jian; Zhang, Xuan; Schweitzer, Neil M.; Hupp, Joseph T.; Farha, Omar K.
• Is Part Of: Inorganic chemistry frontiers. Volume 4:Issue 5(2017)
• Page Start: 820
• Page End: 824
• Publication Date: 2017-03-09
• Subjects: Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c7qi00056a
• Languages: English
• ISSNs: 2052-1553

Abstract

Abstract : Ni(ii ) ions have been deposited on the Zr6 nodes of a metal–organic framework (MOF), UiO-66, via an ALD-like process (ALD = atomic layer deposition). Abstract : Ni(ii ) ions have been deposited on the Zr6 nodes of a metal–organic framework (MOF), UiO-66, via an ALD-like process (ALD = atomic layer deposition). By varying the number of ALD cycles, three Ni-decorated UiO-66 materials were synthesized. A suite of physical methods has been used to characterize these materials, indicating structural and high-surface-area features of the parent MOF are retained. Elemental analysis via X-ray photoelectron spectroscopy (XPS) indicates that the anchored Ni ions are mainly on surface and near-surface MOF defect sites. Upon activation, all three materials are catalytic for ethylene hydrogenation, but their catalytic activities significantly vary, with the largest clusters displaying the highest per-nickel-atom activity. The study highlights the ease and effectiveness of ALD in MOFs (AIM) for synthesizing, specifically, UiO-66-supported Ni y O x catalysts.