Open AccessComparative study on catalytic reactivity of colloidal Ni(0)NPs and Pd(0)NPs towards semi-hydrogenation of alkynes
Author(s) -
Phuong Phan Hong,
Phuong Nguyen Thi Hong,
Hung Lam Hoa,
Trung Đặng Bảo
Publication year - 2021
Publication title -
xúc tác và hấp phụ
Language(s) - English
Resource type - Journals
ISSN - 0866-7411
DOI - 10.51316/jca.2021.033
Subject(s) - catalysis , nanoparticle , transmission electron microscopy , palladium , selectivity , reactivity (psychology) , nickel , metal , hydrogen , glycerol , chemistry , materials science , colloid , chemical engineering , inorganic chemistry , nuclear chemistry , organic chemistry , nanotechnology , medicine , alternative medicine , pathology , engineering
In this study, nickel nanoparticles (Ni(0)NPs) and palladium nanoparticles (Pd(0)NPs) were prepared in neat glycerol under hydrogen pressure by the bottom-up approach. The formation of zero-valent metal nanospheres was evidenced by transmission electron microscopy (TEM) and powder X-ray diffraction (XRD) analyses. Regarding their catalytic behaviors, Ni(0)NPs permitted to obtain the corresponding (Z)-alkenes in the semi-hydrogenation of both internal and terminal alkynes. In contrast, over-hydrogenations of such alkynes towards the alkanes were observed over Pd(0)NPs after only 2 hours of reaction. Interestingly, the catalytic phase of Ni(0)NPs in glycerol could be recycled up to 5 times, preserving their catalytic activity and selectivity.