scholarly journals The Use of a Nanoscale Copper Catalyst in the Catalytic Decomposition of Water Polluted with Organic Dyes

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Samia A. Kosa
Keyword(s):  
Organic Dyes ◽  
Copper Catalyst ◽  
Catalytic Decomposition ◽  
Catalytic Process ◽  
Optimal Conditions ◽  
Edx Analysis ◽  
Complete Decomposition ◽  
Supported Copper Catalyst ◽  
Decomposition Of Water ◽  
Concentration Ratios

A supported copper catalyst was used as a catalyst for the decomposition of organic dyes using a commercial chlorinating agent. The catalytic process achieved complete decomposition in only 2 min. Different catalyst to dye concentration ratios is studied to determine the optimal conditions. The catalyst is fully characterized using XRD, SEM, and EDX analysis.

scholarly journals An Infrared Spectroscopic Study of Acrylonitrile Adsorbed on Silica-Supported Copper Catalyst

1986 ◽  
Vol 15 (12) ◽  
pp. 2093-2096 ◽  
Author(s):  
Kazuo Sugiyama ◽  
Hiroshi Miura ◽  
Hideyuki Sekiwa ◽  
Tsuneo Matsuda
Keyword(s):  
Spectroscopic Study ◽  
Copper Catalyst ◽  
Infrared Spectroscopic Study ◽  
Infrared Spectroscopic ◽  
Supported Copper Catalyst

Application of S2O82-/FexOy Solid Super Acid as a Heterogeneous Fenton-Like Catalyst for the Degradation of Orange IV in Water

2010 ◽  
Vol 150-151 ◽  
pp. 1710-1713
Author(s):  
Ying Jie Zhang ◽  
Yue Xiao Tian ◽  
Da Peng Li ◽  
Guo Rui Liu ◽  
Li Zhang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Iron Oxides ◽  
Catalytic Decomposition ◽  
Optimal Conditions ◽  
Heterogeneous Fenton ◽  
Effective Catalyst ◽  
Preparation Conditions ◽  
Super Acid ◽  
Decomposition Of H2o2

A new Fenton-like catalyst was prepared to degrade Orange IV in water by catalytic decomposition of H2O2. The optimal preparation conditions were discussed. The catalytic activity of catalyst was evaluated by the degradation of Orange IV and the decomposition of H2O2. The results show that solid super acid (S2O82-/FexOy) soaked in (NH4)2S2O8 is the most effective catalyst among the synthesized iron oxides soaked in other oxidants. The optimal conditions for solid super acid preparation are calcined at 500 for 2 h in the air.

Sulfite activation by a low-leaching silica-supported copper catalyst for oxidation of As(III) in water at circumneutral pH

2019 ◽  
Vol 359 ◽  
pp. 1518-1526 ◽  
Author(s):  
Wei Ding ◽  
Xingyun Huang ◽  
Weidong Zhang ◽  
Feng Wu ◽  
Jinjun Li
Keyword(s):  
Copper Catalyst ◽  
Supported Copper Catalyst ◽  
Circumneutral Ph

scholarly journals Electrocatalysis of the HER in acid and alkaline media

2013 ◽  
Vol 78 (12) ◽  
pp. 2007-2015 ◽  
Author(s):  
Nemanja Danilovic ◽  
Ram Subbaraman ◽  
Dusan Strmcnik ◽  
Vojislav Stamenkovic ◽  
Nenad Markovic
Keyword(s):  
Catalytic Decomposition ◽  
Alkaline Media ◽  
Alkaline Solutions ◽  
Water Molecules ◽  
Bifunctional Catalysts ◽  
High Coverage ◽  
Acidic Solutions ◽  
Noble Metal Catalysts ◽  
Alkaline Environments ◽  
Decomposition Of Water

Trends in the HER are studied on selected metals (M= Cu, Ag, Au, Pt, Ru, Ir, Ti) in acid and alkaline environments. We found that with the exception of Pt, Ir and Au, due to high coverage by spectator species on non-noble metal catalysts, experimentally established positions of Cu , Ag, Ru and Ti in the observed volcano relations are still uncertain. We also found that while in acidic solutions the M-Hupd binding energy most likely is controlling the activity trends, the trends in activity in alkaline solutions are controlled by a delicate balance between two descriptors: the M-Had interaction as well as the energetics required to dissociate water molecules. The importance of the second descriptor is confirmed by introducing bifunctional catalysts such as M modified by Ni(OH); e.g. while the latter serves to enhance catalytic decomposition of water, the metal sites are required for collecting and recombining the produced hydrogen intermediates.

An efficient noble-metal-free supported copper catalyst for selective nitrocyclohexane hydrogenation to cyclohexanone oxime

2017 ◽  
Vol 53 (20) ◽  
pp. 2930-2933 ◽  
Author(s):  
Qian-Qian Zhang ◽  
Jing Dong ◽  
Yong-Mei Liu ◽  
Yong Cao ◽  
He-Yong He ◽  
...  
Keyword(s):  
Noble Metal ◽  
Copper Catalyst ◽  
Metal Catalyst ◽  
Cyclohexanone Oxime ◽  
Noble Metal Catalyst ◽  
Metal Free ◽  
Supported Copper Catalyst

A green, inexpensive and robust heterogeneous non-noble metal catalyst comprising CuOx/SiO2 nanocomposites can efficiently convert nitrocyclohexane into cyclohexanone oxime under mild hydrogenation conditions.

ChemInform Abstract: Oxidant-Free Lactonization of Diols Using a Hydrotalcite-Supported Copper Catalyst.

ChemInform ◽  
2010 ◽  
Vol 41 (34) ◽  
pp. no-no
Author(s):  
Yusuke Mikami ◽  
Kaori Ebata ◽  
Takato Mitsudome ◽  
Tomoo Mizugaki ◽  
Koichiro Jitsukawa ◽  
...  
Keyword(s):  
Copper Catalyst ◽  
Supported Copper Catalyst

Synthesis of carbon-supported copper catalyst and its catalytic performance in methanol dehydrogenation

2017 ◽  
Vol 409 ◽  
pp. 291-295 ◽  
Author(s):  
Ekaterina V. Shelepova ◽  
Aleksey A. Vedyagin ◽  
Ludmila Yu. Ilina ◽  
Alexander I. Nizovskii ◽  
Pavel G. Tsyrulnikov
Keyword(s):  
Copper Catalyst ◽  
Catalytic Performance ◽  
Methanol Dehydrogenation ◽  
Supported Copper Catalyst
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