نتایج جستجو برای: imides

تعداد نتایج: 720  

2015
Joshua W. Makepeace Thomas J. Wood Hazel M. A. Hunter Martin O. Jones William I. F. David

We demonstrate that non-stoichiometric lithium imide is a highly active catalyst for the production of highpurity hydrogen from ammonia, with superior ammonia decomposition activity to a number of other catalyst materials. Neutron powder diffraction measurements reveal that the catalyst deviates from pure imide stoichiometry under ammonia flow, with active catalytic behaviour observed across a ...

Journal: :Molecules 2016
Mohammed Rafi Shaik Mufsir Kuniyil Mujeeb Khan Naushad Ahmad Abdulrahman Al-Warthan Mohammed Rafiq H Siddiqui Syed Farooq Adil

Polyacrylic acid (PAA) is an important industrial chemical, which has been extensively applied in various fields, including for several biomedical purposes. In this study, we report the synthesis and modification of this polymer with various phenol imides, such as succinimide, phthalimide and 1,8-naphthalimide. The as-synthesized derivatives were used to prepare polymer metal composites by the ...

2017
Jakub Adamek Roman Mazurkiewicz Anna Węgrzyk Karol Erfurt

An effective synthesis of the hitherto unknown 1-imidoalkylphosphonium salts has been developed in the reported study. The crucial step in the method included the decarboxylative α-methoxylation of N-phthaloyl- or N-succinylamino acids to the corresponding N-(1-methoxyalkyl)imides, followed by the displacement of the methoxy group by the triarylphosphonium group through melting of the imide der...

2017
Jose R. Cabrero-Antonino Rosa Adam Veronica Papa Mattes Holsten Kathrin Junge Matthias Beller

The first general and efficient non-noble metal-catalysed reductive C2-alkoxylation of cyclic imides (phthalimides and succinimides) is presented. Crucial for the success is the use of [Co(BF4)2$6H2O/ triphos (L1)] combination and no external additives are required. Using the optimal cobalt-system, the hydrogenation of the aromatic ring of the parent phthalimide is avoided and only one of the c...

1999
Bernd Wrackmeyer Ēriks Kupče

Ultrahigh resolution l5N NMR spectra were measured for two nitroalkanes (MeNÜ2 la, fBuN02 lc), two isocyanates (;BuNCO 2c, Me^SiNCO 2d), four isothiocyanates (MeNCS 3a, EtNCS 3b, 'BuNCS 3c, M e3SiNCS 3d), one carbodiimide (Me3 SiNCNSiMe3 4d), one keteneimine [Me3 SiNCC(SiMe3 ) 2 5d], two sulphinyl imides ('BuNSO 6c, Me3 SiNSO 6d), and N-terf-butyl-pyrrole 7c, in order to determine coupling cons...

2016
Guohui Dong Liping Yang Fu Wang Ling Zang Chuanyi Wang

For photocatalytic removal of nitric oxide (NO), two major issues need to be addressed: incomplete oxidation of NO and deactivation of the photocatalyst. In this study, we aimed to solve these two problems by constructing an all-solid-state Z-scheme heterojunction (PI-g-C3N4) consisting of g-C3N4 surface modified with perylene imides (PI). PI-g-C3N4 exhibits significant enhancement in photocata...

Journal: :Angewandte Chemie 2011
Khang Hoang Anderson Janotti Chris G Van de Walle

thus suggesting that the thermodynamics and kinetics of the decomposition depend on the particle size. The high surfaceto-volume ratio of nanoparticles that result from the ballmilling process not only leads to an increase in the number of surface-active sites for reaction, but may also affect the actual reaction mechanisms. Based on results of ab initio calculations for native point defects an...

Journal: :Dalton transactions 2015
Jian-Jun Liu Yu-Jian Hong Ying-Fang Guan Mei-Jin Lin Chang-Cang Huang Wen-Xin Dai

Interpenetration is an intrinsic behaviour for the porous coordination networks. To prevent the interpenetration, a common strategy is the imposition of geometric or steric restrictions by incorporating bulky moieties into organic tectons. So far, most of the available incorporations have been achieved through a covalent connection, while few involved in the non-covalent weak interactions. In t...

2017
Rukiya Matsidik Alessandro Luzio Özge Askin Daniele Fazzi Alessandro Sepe Ullrich Steiner Hartmut Komber Mario Caironi Michael Sommer

The synthesis, characterization, and charge transport performance of novel copolymers PNDIFu2 made from alternating naphthalene diimide (NDI) and bifuran (Fu2) units are reported. Usage of potentially biomass-derived Fu2 as alternating repeat unit enables flattened polymer backbones due to reduced steric interactions between the imide oxygens and Fu2 units, as seen by density functional theory ...

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