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Nanomaterials (Basel) 2022 Apr 24;12(9). Epub 2022 Apr 24.

Institute for Advanced Study, Chengdu University, Chengdu 610106, China.

A nanocomposite NiPt/5LSBA-160 catalyst comprised of highly dispersed Ni nanoparticles contacting intimately with Pt over novel mesoporous LaFeO-SBA-15-CTA support with a high specific surface area (SSA) was successfully developed for the dry reforming of methane. Results revealed that the high SSA mesoporous LaFeO-SBA-15-CTA materials could first be synthesized by an in situ growth hydrothermal process and used as an excellent carrier candidate of Ni-based catalysts to achieve enhanced catalytic activity due to the strong interaction between LaFeO and Ni species. Moreover, the introduction of Pt over a Ni/5LSBA-160 catalyst would further promote the interaction between Ni and support, improve the dispersion of active Ni centers and obtain a higher syngas formation rate as well as tolerance to carbon coking than that of a Pt-free Ni/5LSBA-160 catalyst sample. Read More

RSC Adv 2021 Dec 6;11(62):38977-38981. Epub 2021 Dec 6.

Henan Institute of Advanced Technology, Zhengzhou University Zhengzhou 450001 China

Developing low-cost, highly efficient electrocatalysts for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is desirable for rechargeable metal-air batteries. Herein, a series of perovskite structured (LaSr)FeO catalysts with A-site deficiency were synthesized through a scalable solid state synthesis method at different calcination temperatures. The electrocatalytic activities of these catalysts were investigated by thin-film RDE technique. Read More

Chemphyschem 2022 Apr 28:e202200152. Epub 2022 Apr 28.

Química de Recursos Energéticos y Medio Ambiente, Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Calle 70 No. 52-21, 050010, Medellín, Colombia.

There is an ongoing effort to replace rare and expensive noble-element catalysts with more abundant and less expensive transition metal oxides. With this goal in mind, the intrinsic defects of a rhombohedral perovskite-like structure of LaMnO and their implications on CO catalytic properties were studied. Surface thermodynamic stability as a function of pressure (P) and temperature (T) were calculated to find the most stable surface under reaction conditions (P=0. Read More

RSC Adv 2021 Jun 7;11(33):20313-20321. Epub 2021 Jun 7.

Graduate School of Science and Engineering, Saitama University 255 Shimo-Okubo, Sakura-ku Saitama 338-8570 Japan

Oxygen evolution reaction (OER) is a key step in energy storage devices. Lanthanum cobaltite (LaCoO) perovskite is an active catalyst for OER in alkaline solutions, and it is expected to be a low-cost alternative to the state-of-the-art catalysts (IrO and RuO) because transition metals are abundant and inexpensive. For efficient catalysis with LaCoO, nanosized LaCoO with a high surface area is desirable for increasing the number of catalytically active sites. Read More

RSC Adv 2021 Aug 31;11(46):28961-28972. Epub 2021 Aug 31.

Department of Chemistry, Faculty of Science, Menoufia University 32511 Shebin El-Kom Menoufia Egypt.

The acrolein production from bio-alcohols methanol and ethanol mixtures using AMnO (since A = Ba and/or Sr) perovskite catalysts was studied. All the prepared samples were characterized by XRD, XPS, N sorption, FTIR, Raman spectroscopy, TEM, SEM, TGA, and NH-CO-TPD. The catalytic oxidation reaction to produce acrolein has occurred two steps, the alcohols are firstly oxidized to corresponding aldehydes, and then the aldol is coupled with the produced aldehydes. Read More