Unraveling Surface Basicity and Bulk Morphology Relationship on Covalent Triazine Frameworks with Unique Catalytic and Gas Adsorption Properties

被引:86
作者
Tuci, Giulia [1 ,2 ]
Pilaski, Moritz [3 ]
Ba, Housseinou [4 ]
Rossin, Andrea [1 ,2 ]
Luconi, Lapo [1 ,2 ]
Caporali, Stefano [5 ]
Cuong Pham-Huu [4 ]
Palkovits, Regina [3 ]
Giambastiani, Giuliano [1 ,2 ,6 ]
机构
[1] CNR, Inst Chem OrganoMetall Cpds ICCOM, Via Madonna Piano 10, I-50019 Florence, Italy
[2] Consorzio INSTM, Via Madonna Piano 10, I-50019 Florence, Italy
[3] Rhein Westfal TH Aachen, Inst Tech & Makromol Chem, Worringerweg 2, D-52074 Aachen, Germany
[4] Univ Strasbourg UdS, CNRS, UMR 7515, ICPEES, 25 Rue Becquerel, F-67087 Strasbourg 02, France
[5] Univ Florence, Dept Chem, I-50019 Florence, Italy
[6] Kazan Fed Univ, Kazan 420008, Russia
关键词
METAL-FREE ELECTROCATALYSTS; STEAM-FREE DEHYDROGENATION; MESOPOROUS CARBON NITRIDE; LOW-TEMPERATURE OXIDATION; EFFICIENT CO2 CAPTURE; HYDROGEN STORAGE; ORGANIC FRAMEWORKS; HIGH-PERFORMANCE; SOLID CATALYSTS; POLYMER;
D O I
10.1002/adfm.201605672
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Activity and selectivity are key features at the basis of an efficient catalytic system for promoting the steam- and oxygen-free dehydrogenation (DDH) of ethylbenzene to styrene. The catalyst stability under severe reaction conditions, the reduction of leaching of its active sites, and their resistance to deactivation phenomena on stream are other fundamental aspects to keep in mind while synthesizing new catalytic materials for the process. Although the recent use of single-phase (doped or undoped) carbon nanomaterials has significantly contributed to improving this catalysis, the relationship between materials morphology and their chemical surface properties still remains to be addressed. Here, a class of highly microporous, N-doped covalent triazine frameworks (CTFs) with superior activity and stability in the DDH compared to the benchmark systems of the state-of-the-art is reported. Notably, a comparative analysis of their chemicophysical properties has unveiled the role of the "chemically accessible" surface basicity on the catalyst passivation on stream. Finally, the unique properties of the synthesized CTFs are demonstrated by their excellent H-2 storage capability and CO2 absorption that rank among the highest reported so far for related systems.
引用
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页数:10
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