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Tandem Catalysis of Ammonia Borane Dehydrogenation and Phenylacetylene Hydrogenation Catalyzed by CeO 2 Nanotube/Pd@MIL‐53(Al)
Author(s) -
Li Xinyu,
Song Lianghao,
Gao Daowei,
Kang Baotao,
Zhao Huaiqing,
Li Cuncheng,
Hu Xun,
Chen Guozhu
Publication year - 2020
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202000085
Subject(s) - phenylacetylene , ammonia borane , dehydrogenation , catalysis , selectivity , palladium , chemistry , chemical engineering , materials science , inorganic chemistry , organic chemistry , engineering
Heterogeneously catalyzed, selective hydrogenation in the liquid phase is widely used in industry for the synthesis of chemicals. However, it can be a challenge to prevent active nanoparticles (e.g., palladium) from aggregation/leaching and meanwhile achieve high conversion as well as selectivity, especially under mild conditions. To address these issues, a CeO 2 nanotube/Pd@MIL‐53(Al) sandwich‐structured catalyst has been prepared in which the MIL‐53(Al) porous shell can efficiently stabilize the palladium nanoparticles. When this catalyst was used in a tandem catalytic reaction involving the dehydrogenation of ammonia borane and the hydrogenation of phenylacetylene, remarkably, the hydrogen released from the dehydrogenation of ammonia borane boosted the catalytic process, with 100 % conversion of phenylacetylene and a selectivity of 96.2 % for styrene, even at room temperature and atmospheric pressure, within 1 min. This work therefore provides an alternative strategy for balancing the conversion and selectivity of liquid‐phase hydrogenation reactions.