由于这种σ→d给予机制,反应中间体可以更有效地吸附,导致速率决定步骤的能量势垒降低,整个反应动力学加快。对照实验和原位FTIR揭示了尿素合成的机理:*NH2和*CO偶联生成*CONH2,然后通过多步PCET生成尿素。这些发现为提高电催化剂对尿素电合成的反应动力学能力提供了新的视角,从而有可能推动这一前沿领域的发展。 尿素检...
Iron(II) complexes of the type [FeCl 2 (P鈭) 2 ] [P鈭= o -(diphenylphosphino)benzaldehyde{PPh 2 ( o -C 6 H 4 CHO)}( 1 ) and o -(diphenylphosphino)benzoic acid {PPh 2 ( o -C 6 H 4 COOH)}( 2 )] have been synthesized by the reaction of FeCl 2 .4H 2 O with ...
n2RasFnetdhFrF3oecuFagt3hhNotRdhseesaf1ro3e,r9m2p,9r3ae.tsiTeonhnteesodef Conclusions This work presents a simple synthetic route to prepare high-quality Fe, Mn, and Co difluoride NRs via ther- molysis of transition metal (M = Fe, Mn, and Co) trifluoroacetate complexes in TOP and ...
A Perkin Elmer ATR-FTIR Frontier spectrometer was used to identify the functional groups of the adsorbents the range of 450–4000 cm−1. Raman spectra were recorded in the range of 300 a 3500 cm−1 by a Renishaw InVia Microscope equipped with a Leica DM2600M microscope and a 20×...
Analysis and characterization of the magnetic core–shell catalyst functionalized with D-(–)-α-phenylglycine (Fe3O4@SiO2@PTS-APG, 1) Different spectroscopic, microscopic and analytical techniques including Fourier transform infrared (FTIR) spectroscopy, field emission scanning electron microscopy (FESEM...
The Use of Liquid–Liquid Interface (Biphasic) for the Preparation of Benzenetricarboxylate Complexes of Cobalt and Nickel New metal-organic frameworks (MOFs) [Ni(C12N2H10)(H2O)][C6H3(COO)2(COOH)] (I), [Co2(H2O)6][C6H3(COO)3]2·(C4N2H12)(H2O)2 (II), [Ni2(H2O)6][C6H3(COO...
Modern analytical tools (SEM, BET, XRD, FTIR) were adopted to characterize the properties of the optimized adsorbent, i.e., LMF11 NFs with a La:Mn molar ratio of 1:1. The surface area calculated via BET method and pHpzc assessed using pH drift method of LMF11 NFs were 55.81 m2 g...
The crystal structure of the catalysts was studied by X-ray powder diffraction (XRD) with Cu Ka radiation (Bruker D8, λ = 0.15418 nm). Fourier transform infrared spectroscopy (FTIR) was used to analyze the chemical functional groups and chemical bounds of catalysts in the 4000–400 cm−1...
=-COOH,R 11 =-COOH,R 12 =-CH 2 COOH,n为2-70,其中所述三元共聚物的数均分子量范围在500和1061之间,由排阻色谱法测定。 2.根据权利要求1得到的三元共聚物,其特征为所述衣康酸异构体为顺式-戊烯二酸、反式-戊烯二酸、柠康酸和中康酸。 3.根据权利要求1得到的三元共聚物,其特征为所述乌头酸异构体为顺...
Furthermore, the CQDs were used in a specific sensitive assay for Fe(III) and ascorbic acid (AA), even with interference from other metal ions. The fluorescence emission of CQDs was “turned off” specifically upon binding of Fe(III) and “turned on” with AA. The prepared CQDs represent...