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Porous Pt‐Ni Nanowires within In Situ Generated Metal‐Organic Frameworks for Highly Chemoselective Cinnamaldehyde Hydrogenation
Author(s) -
Zhang Nan,
Shao Qi,
Wang Pengtang,
Zhu Xing,
Huang Xiaoqing
Publication year - 2018
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201704318
Subject(s) - cinnamaldehyde , cinnamyl alcohol , selectivity , materials science , catalysis , nanowire , porosity , chemical engineering , metal organic framework , alcohol oxidation , nanotechnology , adsorption , organic chemistry , chemistry , composite material , engineering
Although chemoselective hydrogenation of unsaturated aldehydes is the major route to highly valuable industrially demanded unsaturated alcohols, it is still challenging, as the production of saturated aldehydes is more favorable over unsaturated alcohols from the view of thermodynamics. By combining the structural features of porous nanowires (NWs) and metal‐organic frameworks (MOFs), a unique class of porous Pt‐Ni NWs in situ encapsuled by MOFs (Pt‐Ni NWs@Ni/Fex‐MOFs) is designed to enhance the unsaturated alcohols selectivity in the cinnamaldehyde (CAL) hydrogenation. A detailed catalytic study shows that the porous Pt‐Ni NWs@Ni/Fe x ‐MOFs exhibit volcano‐type activity and selectivity in CAL hydrogenation as a function of Fe content. The optimized porous PtNi 2.20 NWs@Ni/Fe 4 ‐MOF is highly active and selective with 99.5% CAL conversion and 83.3% cinnamyl alcohol selectivity due to the confinement effect, appropriate thickness of MOF and its optimized electronic structure, and excellent durability with negligible activity and selectivity loss after five runs.