The An Electron-Microscopic Study of Metal Oxides and Metal Oxide Catalysts.

1950 ◽  
Vol 54 (4) ◽  
pp. 505-519 ◽  
Author(s):  
James T. McCartney ◽  
Bernard. Seligman ◽  
W. Keith. Hall ◽  
Robert B. Anderson
Keyword(s):  
Metal Oxide ◽  
Metal Oxides ◽  
Microscopic Study ◽  
Electron Microscopic Study ◽  
Oxide Catalysts ◽  
Metal Oxide Catalysts ◽  
Electron Microscopic

Recent advances in anion-doped metal oxides for catalytic applications

2019 ◽  
Vol 7 (13) ◽  
pp. 7280-7300 ◽  
Author(s):  
Yu Liu ◽  
Wei Wang ◽  
Xiaomin Xu ◽  
Jean-Pierre Marcel Veder ◽  
Zongping Shao
Keyword(s):  
Metal Oxide ◽  
Metal Oxides ◽  
Oxide Catalysts ◽  
Metal Oxide Catalysts ◽  
Recent Advances ◽  
Catalytic Applications

Doping anions, such as fluorine, chlorine, sulfur, carbon or nitrogen elements, into the oxygen sites of metal oxides can alter the catalytic capability of metal oxide catalysts.

scholarly journals Obtaining cyclopentanone in the presence of metal oxides

2021 ◽  
Vol 8 (4) ◽  
pp. 20218410
Author(s):  
I. V. Tsvetkova ◽  
A. A. Golovanov ◽  
A. A. Kondrateva ◽  
N. V. Chirkunova
Keyword(s):  
Metal Oxide ◽  
Metal Oxides ◽  
Oxide Catalysts ◽  
Metal Salts ◽  
Metal Oxide Catalysts ◽  
Different Temperatures

The possibility of obtaining cyclopentanone by pyrolysis of calcium adipate at different temperatures was considered. The pyrolysis proceeded with the formation of cyclopentanone and cyclopentene. The use of metal salts and metal oxide catalysts for the dehydrogenation of lower alkanes makes it possible to increase the yields of the target products. The best results were achieved in the presence of a «K-16u» catalyst.

scholarly journals Metal oxides and ultraviolet light-based photocatalytic pretreatment of biomass for biogas production and lignin oxidation

BioResources ◽  
2020 ◽  
Vol 15 (1) ◽  
pp. 1747-1762
Author(s):  
Muhammad Awais ◽  
Muhammad Salman Mustafa ◽  
Muhammad Asif Rasheed ◽  
Farrukh Jamil ◽  
Syed Muhammad Zaigham Abbas Naqvi
Keyword(s):  
Metal Oxide ◽  
Metal Oxides ◽  
Uv Irradiation ◽  
Advanced Oxidation Process ◽  
Anaerobic Fermentation ◽  
Biogas Production ◽  
Oxide Catalysts ◽  
Raw Material ◽  
Metal Oxide Catalysts ◽  
The Past

Lignocellulosics are abundant and readily available as the raw material for the production of biogas. However, the structure of this raw material needs to be modified to increase its digestibility during anaerobic fermentation. Various pretreatment methods that have been proposed in the past have been examined; however, the focus of the present study was to pretreat a wheat straw (WS) substrate using an advanced oxidation process (AOP) with a metal oxide photocatalyst combined with ultraviolet (UV) irradiation. Four different metal oxides were examined at 0, 1, 2, 3, and 4% dosages (w/w) coupled with UV irradiation for 0, 60, 120, and 180 min. Experimental results revealed that among all metal oxide catalysts examined, only the 4% CuO combined with 180 min UV irradiation caused the most lignin to be released from the WS. This resulted in the highest vanillic acid (VA) being produced (4.32 ± 0.15 mg VA/g VS). This WS pretreatment also resulted in a biomethane potential (BMP) assay of 384 ± 16 NmL CH4/g VS. The BMP assay results revealed a maximum 28% increase in biodegradability and a 57% increase in methane production. The use of either metal oxide catalysts or UV irradiation alone resulted in ineffective WS pretreatment.

Recent advances in ordered meso/macroporous metal oxides for heterogeneous catalysis: a review

2017 ◽  
Vol 5 (19) ◽  
pp. 8825-8846 ◽  
Author(s):  
Yuan Wang ◽  
Hamidreza Arandiyan ◽  
Jason Scott ◽  
Ali Bagheri ◽  
Hongxing Dai ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
Metal Oxide ◽  
Metal Oxides ◽  
Porous Metal ◽  
Review Article ◽  
Oxide Catalysts ◽  
Present Review ◽  
Metal Oxide Catalysts ◽  
Recent Advances ◽  
Recent Developments

The present review article highlights the preparation, characterization, properties, and recent developments in porous metal oxide catalysts for heterogeneous catalysis.

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