Biosynthesis of ruthenium nanoparticles supported on nitric acid modified activated carbon for liquid-phase hydrogenation of 2,2,4,4-tetramethylcyclobutane-1,3-dione

2015 ◽  
Vol 72 ◽  
pp. 20-23 ◽  
Author(s):  
Yangqiang Huang ◽  
Yao Ma ◽  
Youwei Cheng ◽  
Lijun Wang ◽  
Xi Li
Keyword(s):  
Activated Carbon ◽  
Nitric Acid ◽  
Liquid Phase ◽  
Ruthenium Nanoparticles ◽  
Modified Activated Carbon ◽  
Liquid Phase Hydrogenation

scholarly journals Aminated Activated Carbon in Liquid-phase Hydrogenation of Organic Compounds

2020 ◽  
Vol 35 (3) ◽  
pp. 103-110
Author(s):  
N.A. Magdalinova ◽  
◽  
K.M. Puzakova ◽  
M.V. Klyuev ◽  
◽  
...  
Keyword(s):  
Activated Carbon ◽  
Liquid Phase ◽  
Organic Compounds ◽  
Liquid Phase Hydrogenation

scholarly journals Liquid phase hydrogenation of CO2 to formate using palladium and ruthenium nanoparticles supported on molybdenum carbide

2019 ◽  
Vol 43 (35) ◽  
pp. 13985-13997 ◽  
Author(s):  
Claire E. Mitchell ◽  
Umberto Terranova ◽  
Ihfaf Alshibane ◽  
David J. Morgan ◽  
Thomas E. Davies ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Palladium Nanoparticles ◽  
Molybdenum Carbide ◽  
Active Catalyst ◽  
Ruthenium Nanoparticles ◽  
Reaction Conditions ◽  
Hydrogenation Of Co2 ◽  
Liquid Phase Hydrogenation ◽  
Hydrogenation Of Co

We report the development of palladium nanoparticles supported on Mo2C as an active catalyst for the liquid-phase hydrogenation of CO2 to formate under mild reaction conditions (100 °C and 2.0 MPa of a 1 : 1 CO2 : H2 mixture).

Characteristics of Activated Carbon Modified with Nitric Acid and its Performance in Catalytic Ozonation of Acid Red 3R

2013 ◽  
Vol 726-731 ◽  
pp. 1687-1690
Author(s):  
Jing Zhang ◽  
Jian Song Liu ◽  
Chun Liu ◽  
Jing Liang Yang ◽  
Lei Zhang
Keyword(s):  
Activated Carbon ◽  
Nitric Acid ◽  
Adsorption Capacity ◽  
Functional Groups ◽  
Chemical Properties ◽  
Catalytic Ozonation ◽  
Alkaline Condition ◽  
Ozone Decomposition ◽  
Acid Modification ◽  
Modified Activated Carbon

The structure and surface chemical properties of activated carbon after nitric acid modification and their influences on adsorption and catalytic ozonation of acid red 3R were investigated. The results showed that both specific surface area and micropore volume of activated carbon decreased, but mesopore volume increased after nitric acid modification. The adsorption capacity and catalytic ozonation performance of modified activated carbon were influenced due to the increased surface acidic functional groups. The adsorption capacity of modified activated carbon was enhanced under acidic condition due to dispersion interaction between increased surface acidic functional groups and acid red 3R. The increase in surface acidic functional groups of activated carbon was also considered to be responsible for improvement of the catalytic ozonation of acid red 3R under alkaline condition, because of their participation in the ozone decomposition and OH generation.

Study on Treatment of Cr (VI)-Containing Wastewater with Nitric Acid Modified Activated Carbon

2011 ◽  
Vol 413 ◽  
pp. 38-41
Author(s):  
Xiu Ling Song ◽  
Hui Qian
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Nitric Acid ◽  
Ph Value ◽  
Removal Rate ◽  
Freundlich Isotherm ◽  
Exchange Capacity ◽  
Modified Activated Carbon ◽  
Exchange Adsorption ◽  
Adsorption Curve

After activated carbon is oxidized and modified with nitric acid (1:1), its cation exchange capacity can amount to 1.840 mmol • g-1. The modified activated carbon is used as adsorbent for the treatment of Cr (Ⅵ)-containing wastewater at room temperature, and its removal mechanism is discussed in this paper. It is shown that: when the pH value of the aqueous solution being 2.5-3.0;the adsorption time being 3.0h, the removal rate of Cr (Ⅵ) in the aqueous solution can reach 97% and its adsorption capacity can amount to 45.66 mg • g-1. From the results, it can be also seen that the adsorption curve to chromium in wastewater by the modified activated carbon better meets the Freundlich isotherm, and ion exchange adsorption mainly does its work.

Granulated Carbon Nanotubes as the Catalyst Support for Pt for the Hydrogenation of Nitrobenzene

2010 ◽  
Vol 63 (1) ◽  
pp. 131 ◽  
Author(s):  
Shao Jin ◽  
Weizhong Qian ◽  
Yi Liu ◽  
Fei Wei ◽  
Dezeng Wang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Mass Transfer ◽  
Catalytic Activity ◽  
Activated Carbon ◽  
Liquid Phase ◽  
Transfer Rate ◽  
High Selectivity ◽  
Mass Transfer Rate ◽  
Catalyst Support ◽  
Liquid Phase Hydrogenation

Granulated Pt/carbon nanotubes (CNTs) were found to have a much better catalytic activity in the liquid phase hydrogenation of nitrobenzene than Pt/activated carbon (AC). The granulated CNTs had much larger pores than the AC particles, which gave a faster mass transfer rate of H2 that helped produce aniline with high selectivity.

Desalination by capacitive deionization process using nitric acid-modified activated carbon as the electrodes

Desalination ◽  
2014 ◽  
Vol 340 ◽  
pp. 67-72 ◽  
Author(s):  
Wei Huang ◽  
Yimin Zhang ◽  
Shenxu Bao ◽  
Roel Cruz ◽  
Shaoxian Song
Keyword(s):  
Activated Carbon ◽  
Nitric Acid ◽  
Capacitive Deionization ◽  
Modified Activated Carbon

scholarly journals Modified Activated Carbon Fiber Felt for the Electrosorption of Norfloxacin in Aqueous Solution

2020 ◽  
Vol 12 (10) ◽  
pp. 3986
Author(s):  
Xianzhen Li ◽  
Yue Hu ◽  
Diao She ◽  
Wei-Bo Shen
Keyword(s):  
Activated Carbon ◽  
Nitric Acid ◽  
Carbon Fiber ◽  
Activated Carbon Fiber ◽  
Order Kinetic ◽  
Human Beings ◽  
Adsorption Effect ◽  
Regeneration Rate ◽  
Modified Activated Carbon ◽  
Carbon Fiber Felt

As an antibiotic, Norfloxacin (NOR) is widely found in the water environment and presents considerable harm to human beings. At present, the preparation of removal materials is complicated, and the removal efficiency is not high. The adsorption effect of modified activated carbon fiber felt (MACFF) electrosorption and its influencing factors on NOR were studied. Activated carbon fiber felt (ACFF) was modified with 20% nitric acid, and the ACFFs were characterized by SEM, TEM, and FTIR both before and after modification. The optimal working conditions for electrosorption with an MACFF electrode were as follows: the voltage was 1.0 V, the pH was 6, and the plate spacing was 10 mm. The maximum adsorption capacity of the MACFF for NOR was 128.55 mg/g. Model fitting showed that pseudo-second-order kinetic model and Langmuir model were more suitable for explaining this adsorption process. In addition, this study found that, with 20% nitric acid as the regeneration liquid and under the reverse charging method, the regeneration rate of the MACFF electrode was maintained at approximately 96% and the regeneration was good, therefore, this technology can not only save operation costs but also has good development prospects in sewage treatment.

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