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23,982 Newest Publications about the topic catalysis

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Precursor-mediated synthesis of Cu2−xSe nanoparticles and their composites with TiO2 for improved photocatalysis

03-Jul-2018 | Sweta Gahlot; Erwann Jeanneau; Frederic Dappozze; Chantal Guillard; Shashank Mishra, Dalton Transactions, 2018

The direct synthesis of copper selenide nanoparticles from the reaction of ditertiarybutyl selenide tBu2Se with copper(ii) trifluoroacetate Cu(TFA)2 under mild conditions is reported. The isolation of a molecular species during the course of this reaction, established as [Cu2(TFA)2(tBu2Se)3], by ...

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Effects of Nd-modification on the activity and SO2 resistance of MnOx/TiO2 catalyst for low-temperature NH3-SCR

03-Jul-2018 | Wenkui Zhang; hongfeng Chen; Yang Xia; Ruyi Fang; Hui Huang; Yongping Gan; Chu Liang; Jun Zhang; Xuesong Liu, New Journal of Chemistry, 2018

MnOx/TiO2 (MnTi) and Nd-modified MnOx/TiO2 (MnNdTi) were prepared via a coprecipitation method. The used samples were obtained by exposing the fresh catalysts to 50 ppm SO2 stream at 210 oC for 3 h and 6 h, respectively. Comparative investigations were performed on the fresh and used catalysts to ...

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Increasing the ion-exchange capacity of MFI zeolites by introducing Zn to the aluminosilicate frameworks

03-Jul-2018 | Natsume Koike; Kenta Iyoki; Bangda Wang; Yutaka Yanaba; Shanmugam P. Elangovan; Keiji Itabashi; Watcharop Chaikitt ..., Dalton Transactions, 2018

MFI Zeolites exchanged with various cations have gained a great deal of attention as catalysts. Increase in the ion-exchange capacity of zeolites can improve their catalytic properties by introducing more active sites; however, the ion-exchange capacity of MFI zeolites is limited by maximum ...

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Harnessing electrostatic catalysis in single molecule, electrochemical and chemical systems: a rapidly growing experimental tool box

03-Jul-2018 | Simone Ciampi; Nadim Darwish; Heather M. Aitken; Ismael Díez-Pérez; Michelle L. Coote, Chemical Society Reviews, 2018

Static electricity is central to many day-to-day practical technologies, from separation methods in the recycling of plastics to transfer inks in photocopying, but the exploration of how electrostatics affects chemical bonding is still in its infancy. As shown in the Companion Tutorial, the ...

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Synthesis of zero-valent iron nanoparticles via laser ablation in a formate ionic liquid under atmospheric conditions

03-Jul-2018 | Shinya Okazoe; Yoshiro Yasaka; Masaki Kudo; Hiroshi Maeno; Yasukazu Murakami; Yoshifumi Kimura, Chemical Communication, 2018

Transition metal nanoparticles (NPs) are promising materials for use as catalysts in many processes, although they are easily oxidized under ambient conditions. In this communication, a novel synthetic method is proposed for producing zero-valent iron (Fe) NPs by laser ablation under atmospheric ...

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Hysteretic spin crossover in isomeric iron(II) complexes

03-Jul-2018 | Mark B Bushuev; Viktor P Krivopalov; Elena B Nikolaenkova; Katerina A. Vinogradova; Yuri V Gatilov, Dalton Transactions, 2018

Two mononuclear iron(II) complexes with isomeric N,N,N-tridentate pyrimidine-based ligands were synthesized. Both complexes show reproducible hysteretic spin crossover. The low spin state to high spin state switching is cooperative due to autocatalysis.

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Heteropoly acid supported on sodium dodecyl benzene sulfonate modified layered double hydroxides as catalyst for oxidative desulfurization

03-Jul-2018 | Pengcheng Huang; Aili Liu; Lihua Kang; Mingyuan Zhu; Bin Dai, New Journal of Chemistry, 2018

Layered double hydroxides (LDHs) modified with sodium dodecyl benzene sulfonate (SDBS) were successfully prepared and applied as catalysts for oxidative desulfurization (ODS). Characterization of the LDH samples indicated that modification with SDBS improves the hydrophilic and lipophilic ...

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Electronic structure engineering to boost oxygen reduction activity by controlling the coordination of the central metal

03-Jul-2018 | Yunhu Han; Yanggang Wang; Ruirui Xu; Wenxing Chen; Lirong Zheng; Aijuan Han; Youqi Zhu; Jian Zhang; Huabin Zhang; Ju ..., Energy & Environmental Science, 2018

Adjusting the electronic structure of the active center is a highly effective strategy for improving the performance of catalysts. Herein, we report an atomically dispersed catalyst (FeCl1N4/CNS), which realized for the first time a great improvement of the ORR by controlling the electronic ...

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Cost-effective promoter-doped Cu-based bimetallic catalysts for the selective hydrogenation of C2H2 to C2H4: the effect of the promoter on selectivity and activity

03-Jul-2018 | Riguang Zhang; Bo Zhao; Leilei He; Anjie Wang; Baojun Wang, Physical Chemistry Chemical Physics, 2018

In order to probe into the effect of the promoter on the selectivity and activity towards C2H4 formation in the selective hydrogenation of C2H2 over cost-effective Cu-based bimetallic catalysts, different metal promoter M-modified Cu catalysts including Ni, Ag, Au, Pt, Pd and Rh have been ...

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Effects of preparation method and Sm2O3 promoter on CO methanation of mesoporous NiO–Sm2O3/Al2O3 catalyst

03-Jul-2018 | Qing Liu; Hongyuan Yang; Hao Dong; Wei Zhang; Bing Bian; Qingkun He; Jing Yang; Xiangbao Meng; Zhiwei Tian; Guoming Zhao, New Journal of Chemistry, 2018

In order to investigate the effects of Sm2O3 promoter on catalytic performance, the ordered mesoporous NiO–Sm2O3–Al2O3 catalysts were synthesized by a facile one-pot evaporation-induced self-assembly (EISA) method and used in CO methanation reaction to produce synthetic natural gas. Besides, the ...

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