Activated carbon aerogel supported copper catalysts for the hydrogenation of methyl acetate to ethanol: effect of KOH activation

2019 ◽  
Vol 43 (24) ◽  
pp. 9430-9438 ◽  
Author(s):  
Xiaoxiong Hou ◽  
Jinxian Zhao ◽  
Junjie Liu ◽  
Yahong Han ◽  
Yongli Pei ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Methyl Acetate ◽  
Carbon Aerogel ◽  
Copper Catalysts ◽  
Koh Activation ◽  
Ethanol Effect ◽  
Supported Copper Catalysts ◽  
Ethanol Synthesis

Methyl acetate (MA) hydrogenation is crucial for indirect ethanol synthesis through syngas (CO + H2).

Removal of no over carbon-supported copper catalysts. I. Reactivity of no with graphite and activated carbon

Carbon ◽  
1996 ◽  
Vol 34 (3) ◽  
pp. 339-346 ◽  
Author(s):  
C. Marquez-Alvarez ◽  
I. Rodriguez-Ramos ◽  
A. Guerrero-Ruiz
Keyword(s):  
Activated Carbon ◽  
Copper Catalysts ◽  
Supported Copper Catalysts

High Cr(VI) Adsorption Performance of Coal-Based Activated Carbon in Aqueous Solution

2013 ◽  
Vol 798-799 ◽  
pp. 1123-1127
Author(s):  
Hua Lei Zhou ◽  
Qiong Qiong Zhu ◽  
Dong Hua Huang
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Pore Structure ◽  
Ph Value ◽  
High Surface ◽  
High Surface Area ◽  
Koh Activation ◽  
Transmission Electron ◽  
Mesoporous Adsorbent ◽  
Initial Ph

The activated carbon with high surface area was prepared by KOH activation from anthracite and used as adsorbent for removal of Cr (VI) from aqueous solution. The pore structure and surface properties were characterized by N2 adsorption at 77K, transmission electron microscope (TEM) and Fourier transform infrared spectroscopy ( FTIR). Effect of pH and isotherms at different temperature were investigated. Results show that the prepared carbon is a microporous-and mesoporous-adsorbent with developed pore structure and abundant surface oxygen-containing groups. PH value of the solution plays key function on the adsorption. The chemical adsorption dominates the adsorption process. The activated carbon exhibits much higher Cr adsorption capacity than the commercial activated carbon at initial pH of ~3. The equilibrium adsorption data are fitted by both Freundlich model and Langmuir model well.

scholarly journals Study on the Catalytic Properties of Silica Supported Copper Catalysts

2013 ◽  
Vol 51 ◽  
pp. 467-472 ◽  
Author(s):  
Manish Dixit ◽  
Manish Mishra ◽  
P.A. Joshi ◽  
D.O. Shah
Keyword(s):  
Catalytic Properties ◽  
Copper Catalysts ◽  
Supported Copper Catalysts

Supported copper catalysts for highly efficient hydrogenation of biomass-derived levulinic acid and γ-valerolactone

2016 ◽  
Vol 18 (5) ◽  
pp. 1287-1294 ◽  
Author(s):  
Qing Xu ◽  
Xinglong Li ◽  
Tao Pan ◽  
Chuguo Yu ◽  
Jin Deng ◽  
...  
Keyword(s):  
Levulinic Acid ◽  
Copper Catalysts ◽  
Direct Conversion ◽  
Highly Efficient ◽  
Chemoselective Hydrogenation ◽  
Supported Copper Catalysts

Direct conversion of cellulose-derived levulinic acid into γ-valerolactone and γ-valerolactone into 1,4-pentanediol was carried out by chemoselective hydrogenation catalyzed through supported copper-catalysts.

scholarly journals Highly Mesoporous Carbon Aerogel as Catalyst Support in Proton Exchange Membrane Fuel Cells

2019 ◽  
Author(s):  
Kevin Gu ◽  
Eric J. Kim ◽  
Sunil K. Sharma ◽  
Keyword(s):  
Fuel Cells ◽  
Activated Carbon ◽  
Specific Surface ◽  
Surface Area ◽  
Mesoporous Carbon ◽  
Proton Exchange Membrane ◽  
Catalyst Support ◽  
Carbon Aerogel ◽  
Proton Exchange ◽  
Exchange Membrane

<p>Carbon aerogel possesses unique structural and electrical properties, such as high mesopore volume, specific surface area, and electrical conductivity, which make it suitable for use as a catalyst support in Proton Exchange Membrane Fuel Cells (PEMFC). In this study, we present a novel synthesis of highly mesoporous carbon aerogel via ambient-drying and investigate its application in PEMFCs. The structural effects of activation on carbon aerogel were also studied. The TEM, XRF, Non Localized Density Function Theory (NLDFT) and BJH analysis were carried out to observe the morphology and pore structure. Pt on carbon aerogel and activated carbon aerogel show efficient activity in both oxygen reduction and hydrogen oxidation reactions compared to Pt on Vulcan XC-72, with increases up to 715% and 195% in specific power density, respectively. The enhanced performance of carbon aerogel is attributed to its large specific surface area and high mesopore to micropore ratio. Accelerated stress tests show that carbon aerogel has comparable durability with Vulcan XC-72, while activated carbon aerogel is less durable than both materials. Thus, the mesoporous carbon aerogel provides an efficient, lower-cost alternative to existing microporous carbon material as a catalyst support in PEMFCs.</p><p></p>

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