High performance of CuY zeolite for catalyzing acetylene carbonylation and the effect of copper valence states on catalyst

2017 ◽  
Vol 313 ◽  
pp. 663-670 ◽  
Author(s):  
Hao Xie ◽  
Dezhi Yi ◽  
Li Shi ◽  
Xuan Meng
Keyword(s):  
High Performance ◽  
Valence States ◽  
Copper Valence ◽  
Effect Of Copper

A DFT and microkinetic study of propylene oxide selectivity over copper-based catalysts: effects of copper valence states

2020 ◽  
Vol 10 (22) ◽  
pp. 7640-7651
Author(s):  
Tian-Tian Xiao ◽  
Gui-Chang Wang
Keyword(s):  
Selective Oxidation ◽  
Propylene Oxide ◽  
High Performance ◽  
Valence States ◽  
Copper Valence ◽  
Scientific Fields

The development of high-performance copper-based catalysts is critical for the selective oxidation of propylene in both technology and scientific fields.

Effect of Copper Slag as a Fine Aggregate on the Durability Characteristics of High-Performance Concrete (HPC) Containing Silica Fume

2020 ◽  
Vol 07 (02) ◽  
pp. 1-10
Author(s):  
Rizwan Ahmad Khan ◽  
Keyword(s):  
Silica Fume ◽  
High Performance ◽  
High Performance Concrete ◽  
Copper Slag ◽  
Chloride Penetration ◽  
Interfacial Transition Zone ◽  
Fine Aggregate ◽  
Fresh Properties ◽  
Fine Aggregates ◽  
Effect Of Copper

This paper investigates the fresh and durability properties of the high-performance concrete by replacing cement with 15% Silica fume and simultaneously replacing fine aggregates with 25%, 50%, 75% and 100% copper slag at w/b ratio of 0.23. Five mixes were analysed and compared with the standard concrete mix. Fresh properties show an increase in the slump with the increase in the quantity of copper slag to the mix. Sorptivity, chloride penetration, UPV and carbonation results were very encouraging at 50% copper slag replacement levels. Microstructure analysis of these mixes shows the emergence of C-S-H gel for nearly all mixes indicating densification of the interfacial transition zone of the concrete.

A controllable transformation in copper valence states and its applications

2012 ◽  
Vol 41 (8) ◽  
pp. 2393-2398 ◽  
Author(s):  
Jing Yang ◽  
Le Xin Song ◽  
Jun Yang ◽  
Zheng Dang ◽  
Jie Chen
Keyword(s):  
Valence States ◽  
Copper Valence

Investigating the Effect of Copper Initial Valence States on CO2 Electroreduction

2021 ◽  
Author(s):  
Minfang Wu ◽  
Xiao Dong ◽  
Wei Chen ◽  
Aohui Chen ◽  
Chang Zhu ◽  
...  
Keyword(s):  
Valence States ◽  
Co2 Electroreduction ◽  
Effect Of Copper

Unusual Elastic and Mechanical Behaviors of Copper Phosphate Glasses with Different Copper Valence States

2004 ◽  
Vol 84 (10) ◽  
pp. 2401-2408 ◽  
Author(s):  
Tadashi Miura ◽  
Toshio Watanabe ◽  
Yasuhiko Benino ◽  
Takayuki Komatsu ◽  
Ryuji Sato
Keyword(s):  
Phosphate Glasses ◽  
Mechanical Behaviors ◽  
Valence States ◽  
Copper Phosphate ◽  
Copper Valence

Copper Valence Via Small Polaron Analysis in Sinter-Forged YBa2Cu3O7-y at 700°C

1987 ◽  
Vol 99 ◽  
Author(s):  
Deepak Ahuja ◽  
S. E. Dorris ◽  
M.-Y. Su ◽  
Q. Robinson ◽  
D. L. Johnson ◽  
...  
Keyword(s):  
Electrical Property ◽  
Oxygen Content ◽  
Tetragonal Phase ◽  
Small Polaron ◽  
Valence States ◽  
Copper Valence ◽  
Polaron Conduction ◽  
Small Polaron Conduction

ABSTRACTVia electrical property measurements (conductivity, thermopower) at 700°C on sinter-forged YBa Cu O, it was YBa2Cu3O7−x, it was determined that conduction occurs via small polaron conduction in the tetragonal phase. From the thermopower and oxygen content the distribution of copper valence states was determined.

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