Journal
JOURNAL OF CO2 UTILIZATION
Volume 64, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jcou.2022.102179
Keywords
Carbon dioxide; Carboxylation; Silver nanoparticles; Melamine-based porous organic polymers; Gas bubbling-assisted membrane reduction (GBMR)
Funding
- Shanxi Provincial Key Research and Development Project [20201102002]
Ask authors/readers for more resources
In this study, a kind of melamine-based porous organic polymers (POPs) loaded with Ag nanoparticles were successfully synthesized. The catalyst exhibited good CO2 absorption capacity and high activity for the direct formation of carboxylation compounds from terminal alkynes and CO2 under low temperature and atmospheric pressure.
CO2 fixation via directly formation of C-C bonds to obtain carboxylation compound is an essential reaction in industry. Creating efficient, inexpensive and industrially valuable key catalysts have always been a desire, but also an urgent challenge. Here, we synthesized a kind of melamine-based porous organic polymers (POPs) evenly loaded Ag Nanoparticles (Ag NPs/Melamine-based POPs) by the gas bubbling-assisted membrane reduction (GBMR) approach. The melamine-based POPs were used as good nitrogen-rich supports for loading and dispersing Ag nanoparticles. Ag NPs/ melamine-based POPs exhibited good CO2 absorption capacity (2.1 mmol/ g, 273 K and 0.1 MPa) and the excellent activity was up to 93% towards the carboxylation of terminal alkynes with CO2 under mild reaction conditions (323 K, 0.1 MPa). And the TOF is 2.23 h(-1). Specially, this is very few report of heterogeneously catalyzed directly formation of carboxylation compound only applying terminal al-kynes with CO2 under low temperature and atmospheric pressure. The mechanistic study revealed that the well-dispersed Ag active species promoted highly efficient and green conversion of CO2. Moreover, the catalyst was easily recovered and could be reused at least six times with retention of high catalytic activity.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available