journal article·2021-01-20

Highly Active and Stable Palladium Single-Atom Catalyst Achieved by a Thermal Atomization Strategy on an SBA-15 Molecular Sieve for Semi-Hydrogenation Reactions

Zhijun Li, Qinghui Ren, Xuexia Wang, Wenxing Chen, Leipeng Leng, Mingyang Zhang, J. Hugh Horton, Bo Liu, Qian Xu, Wei Wu, Jun Wang

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Abstract

Single-atom catalysts (SACs) have great potential to revolutionize heterogeneous catalysis, enabling fast and direct construction of desired products. Given their notable promise, a general and scalable strategy to access these catalyst systems is highly desirable. Herein, we describe a straightforward and efficient thermal atomization strategy to create atomically dispersed palladium atoms anchored on a nitrogen-doped carbon shell over an SBA-15 support. Their presence was confirmed by spherical aberration correction electron microscopy and extended X-ray absorption fine structure measurement. The nitrogen-containing carbon shells provide atomic diffusion sites for anchoring palladium atoms emitted from palladium nanoparticles. This catalyst showed exceptional efficiency in selective hydrogenation of phenylacetylene and other types of alkynes. Importantly, it showed excellent stability, recyclability, and sintering-resistant ability. This approach can be scaled up with comparable catalytic activity. We anticipate that this work may lay the foundation for rapid access to high-quality SACs that are amenable to large-scale production for industrial applications.
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Research context

OpenAlex topics: Electrocatalysts for Energy Conversion · Nanomaterials for catalytic reactions · Asymmetric Hydrogenation and Catalysis

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Joint International Research Laboratory of Advanced Chemical Catalytic Materials & Surface Science, College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing 163318, PR China

Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, PR China

Department of Chemistry, Queen’s University, Kingston K7L 3N6, Canada

Key Laboratory of Continental Shale Hydrocarbon Accumulation and Efficient Development, Ministry of Education, Northeast Petroleum University, Daqing 163318, PR China

National Synchrotron Radiation Laboratory (NSRL), University of Science and Technology of China, Hefei 230029, PR China

National Center for International Research on Catalytic Technology, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, PR China

Funding

China Postdoctoral Science Foundation · Northeast Petroleum University · Postdoctoral Science Foundation of Heilongjiang Province

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