Open AccessGeneral Strategy toward Hydrophilic Single Atom Catalysts for Efficient Selective Hydrogenation
Author(s) -
Ling Yuxuan,
Ge Handong,
Chen Jiawen,
Zhang Yuqi,
Duan Yunxia,
Liang Minghui,
Guo Yanjun,
Wu TaiSing,
Soo YunLiang,
Yin Xiong,
Ding Liming,
Wang Leyu
Publication year - 2022
Publication title -
advanced science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.388
H-Index - 100
ISSN - 2198-3844
DOI - 10.1002/advs.202202144
Subject(s) - catalysis , cinnamaldehyde , selectivity , metal ions in aqueous solution , chemistry , oxide , metal , alcohol , ion exchange , cinnamyl alcohol , noble metal , inorganic chemistry , materials science , combinatorial chemistry , ion , chemical engineering , organic chemistry , engineering
Well dispersible and stable single atom catalysts (SACs) with hydrophilic features are highly desirable for selective hydrogenation reactions in hydrophilic solvents towards important chemicals and pharmaceutical intermediates. A general strategy is reported for the fabrication of hydrophilic SACs by cation‐exchange approach. The cation‐exchange between metal ions (M = Ni, Fe, Co, Cu) and Na + ions introduced in the skeleton of metal oxide (TiO 2 or ZrO 2 ) nanoshells plays the key role in forming M 1 /TiO 2 and M 1 /ZrO 2 SACs, which efficiently prevents the aggregation of the exchanged metal ions. The as‐obtained SACs are highly dispersible and stable in hydrophilic solvents including alcohol and water, which greatly facilitates the catalysis reaction in alcohol. The Ni 1 /TiO 2 SACs have been successfully utilized as catalysts for the selective C=C hydrogenation of cinnamaldehyde to produce phenylpropanal with 98% conversion, over 90% selectivity, good recyclability, and a turnover frequency (TOF) of 102 h −1 , overwhelming most reported catalysts including noble metal catalysts.