The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. Category: catalyst-ligand, 139-07-1, Name is N-Benzyl-N,N-dimethyldodecan-1-aminium chloride, SMILES is C[N+](C)(CCCCCCCCCCCC)CC1=CC=CC=C1.[Cl-], in an article , author is Zhao, Tuo, once mentioned of 139-07-1.
Highly dispersed L1(0)-PtZn intermetallic catalyst for efficient oxygen reduction
Highly active and durable electrocatalysts with minimal Pt usage are desired for commercial fuel cell applications. Herein, we present a highly dispersed L1(0)-PtZn intermetallic catalyst for the oxygen reduction reaction (ORR), in which a Zn-rich metal-organic framework (MOF) is used as an in situ generated support to confine the growth of PtZn particles. Despite requiring high-temperature treatment, the intermetallic L1(0)-PtZn particles exhibit a small mean size of 3.95 nm, which confers the catalysts with high electrochemical active surface area (81.9 m(2) g(Pt)(-1)) and atomic utilization. The Pt electron structure and binding strength between Pt and oxygen intermediates are optimized through ligand effect and compressive strain. These advantages result in ORR mass activity and specific activity of 0.926 A mg(Pt)(-1) and 1.13 mA cm(-2), respectively, which are 5.4 and 4.0 times those of commercial Pt/C. The stable L1(0) structure provides the catalysts with superb durability; only a halfwave potential loss of 11 mV is observed after 30,000 cycles of accelerated stress tests, through which the structure evolves into a more stable PtZn-Pt core-shell structure. Therefore, the development of a Zn based MOF as a catalyst support is demonstrated, providing a synergy strategy to prepare highly dispersed intermetallic alloys with high activity and durability.
But sometimes, even after several years of basic chemistry education, it is not easy to form a clear picture on how they govern reactivity! 139-07-1, you can contact me at any time and look forward to more communication. Category: catalyst-ligand.
Reference:
Metal catalyst and ligand design,
,Ligand Template Strategies for Catalyst Encapsulation – NCBI