Activated Carbon from Renewable Sugarcane Straw: Support for Ru catalyst in glycerol hydrogenolysis to 1,2 Propanodiol, Ethyleneglycol and Propanols

2020 ◽  
Vol 5 (42) ◽  
pp. 13376-13386
Author(s):  
Felipe J. L. Silveira ◽  
Carla R. Moreira ◽  
Izabela D. B. Grecy ◽  
Alexandre B. Gaspar
Keyword(s):  
Activated Carbon ◽  
Ru Catalyst ◽  
Sugarcane Straw ◽  
Glycerol Hydrogenolysis

Hydrogenolysis of Glycerol to Propanediols over Nano-Ru/C Catalyst with Ionic Liquid Addition

2010 ◽  
Vol 173 ◽  
pp. 49-54 ◽  
Author(s):  
Aznira Alias ◽  
Noraini Hamzah ◽  
Mohd Ambar Yarmo
Keyword(s):  
Ionic Liquid ◽  
Activated Carbon ◽  
Lewis Acid ◽  
Choline Chloride ◽  
Acetylene Black ◽  
Wet Impregnation ◽  
Poisoning Effect ◽  
Impregnation Technique ◽  
Glycerol Hydrogenolysis ◽  
Chloride Catalyst

Supported ruthenium catalyst on nano-activated carbon (2%Ru/C) and titania (2%Ru/TiO2) were prepared by wet impregnation technique with and without ionic liquid addition (choline chloride with different Lewis acid). Mole ratio of choline chloride and Lewis acid were fixed at 1:3. Catalysts evaluation was performed by glycerol hydrogenolysis reaction at 100°C with initial hydrogen pressure 20 bars for 7 hours reaction. The results showed that supported ruthenium on activated carbon acetylene black with addition of choline chloride/zinc (II) chloride catalyst indicated 30.7% of glycerol converted to 20.6% propylene glycol and 11.4% ethylene glycol. Catalysts profile of XRD showed graphitic phase which could reduce catalyst poisoning effect. XPS analysis showed that Ru/CC-ZnCl2/C catalyst spesies was in Ru4+ state before reaction. In the meantime, mapping analysis using FE-SEM showed well dispersion of ruthenium metal on nano-activated carbon acetylene black with addition of choline chloride/zinc (II) chloride gave the highest selectivity to propanediol. Furthermore, smaller size of nano activated carbon (30-60 nm) than titania (90-120nm) analyzed by TEM may the main course in increasing the conversion of glycerol.

Single-atom Ru catalyst for selective synthesis of 3-pentanone via ethylene hydroformylation

2021 ◽  
Author(s):  
Tingting Qin ◽  
Yaru Dang ◽  
Tiejun Lin ◽  
Bingbao Mei ◽  
Bo Wu ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Single Atom ◽  
Selective Synthesis ◽  
Ru Catalyst ◽  
Ethylene Hydroformylation

Ru single-atom (Ru SA) catalyst supported on activated carbon was adopted to synthesize 3-pentanone with 83.3 % selectivity via heterogeneous ethylene hydroformylation, while 52.1 % of ethane selectivity was obtained...

Conversion of Glycerol into Value-Added Products Over Cu–Ni Catalyst Supported on γ-Al2O3 and Activated Carbon

2014 ◽  
Vol 12 (1) ◽  
pp. 151-162 ◽  
Author(s):  
Satyanarayana Murty Pudi ◽  
Tarak Mondal ◽  
Prakash Biswas ◽  
Shalini Biswas ◽  
Shishir Sinha
Keyword(s):  
Activated Carbon ◽  
Mixed Oxide ◽  
Bimetallic Catalysts ◽  
Weight Ratio ◽  
Superior Performance ◽  
Incipient Wetness Impregnation ◽  
Impregnation Method ◽  
Glycerol Conversion ◽  
Glycerol Hydrogenolysis ◽  
Acidic Nature

Abstract A series of Cu, Ni monometallic and bimetallic catalysts supported on γ-Al2O3 and activated carbon were synthesized by incipient wetness impregnation method and examined for hydrogenolysis and esterification of glycerol. Hydrogenolysis reaction was carried out in a 250 ml Teflon-coated stainless steel batch reactor at 250°C and 10 bar H2 pressure, whereas esterification of glycerol with acetic acid was carried out at 120°C at atmospheric pressure. The physiochemical properties of the catalysts were investigated by various techniques such as surface area, X-ray diffraction (XRD), NH3-temperature-programmed desorption (TPD). Characterization results dictated that the reduction behavior, acidic nature and the metal support interactions were varied with the support as well as Cu/Ni weight ratio. The XRD results confirmed the formation of mixed oxide Cu0.75Ni0.25 Al2O4 phase in Cu–Ni (3:1)/γ-Al2O3 catalyst. Among the catalysts tested, Cu–Ni bimetallic catalysts showed superior performance as compared to monometallic catalysts in both the reactions. The glycerol hydrogenolysis activity of γ-Al2O3 supported Cu–Ni catalysts was higher than the activated carbon-supported catalysts. 1,2-PDO was obtained as the main hydrogenolysis product independent of the support as well as Cu/Ni weight ratio and its selectivity was in the range of 92.8–98.5%. The acidic nature of γ-Al2O3 and the mixed oxide (Cu0.75Ni0.25Al2O4) phase played an important role for hydrogenolysis activity. Cu–Ni (3:1)/γ-Al2O3 catalyst showed the maximum 1,2-PDO selectivity to 97% with 27% glycerol conversion after a reaction time of 5 h. On the other hand, Cu–Ni(1:3)/C catalyst showed the highest glycerol conversion of 97.4% for esterification and obtained selectivity to monoacetin, diacetin and triacetin were 26.1%, 67.2% and 6.5%, respectively.

Catalytic Bromate Removal from Water by Using Activated Carbon Supported with Ruthenium (AC/Ru) Catalyst

2018 ◽  
Vol 35 (3) ◽  
pp. 176-184 ◽  
Author(s):  
Zijun Dong ◽  
Feiyun Sun ◽  
Wenyi Dong ◽  
Chenchun Jiang
Keyword(s):  
Activated Carbon ◽  
Ru Catalyst

Use of activated carbon obtained from sugarcane straw for PAH adsorption - a comparative study with commercial materials

2020 ◽  
pp. 1-15
Author(s):  
Lais S. Alves ◽  
Virgílio J. M. Ferreira Neto ◽  
Thiago S. B. Costa ◽  
Alexandre B. Gaspar ◽  
Fabiana M. T. Mendes ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Comparative Study ◽  
Sugarcane Straw

Propane oxidation by vanadium supported on activated carbon from sugarcane straw

2018 ◽  
Vol 458 ◽  
pp. 317-325 ◽  
Author(s):  
Virgílio J.M. Ferreira Neto ◽  
Thiago de S. Belan Costa ◽  
André L.L. Magalhães ◽  
Alexandre B. Gaspar ◽  
Paulo G. Pries de Oliveira ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Propane Oxidation ◽  
Sugarcane Straw

Thermal stability and decomposition of perfluoroalkyl substances on spent granular activated carbon

2020 ◽  
Author(s):  
Feng Xiao ◽  
Bin Yao ◽  
Pavankumar Challa Sasi ◽  
Svetlana Golovko ◽  
Dana Soli ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Activated Carbon ◽  
Granular Activated Carbon ◽  
Perfluoroalkyl Substances

Modification of activated carbon fiber pore structure by coke deposition

2001 ◽  
Vol 11 (PR3) ◽  
pp. Pr3-279-Pr3-286
Author(s):  
X. Dabou ◽  
P. Samaras ◽  
G. P. Sakellaropoulos
Keyword(s):  
Activated Carbon ◽  
Carbon Fiber ◽  
Pore Structure ◽  
Activated Carbon Fiber ◽  
Coke Deposition

Enhancing the power generation of Rhodopseudomonas palustris-based MFC

2020 ◽  
Vol 64 (1-4) ◽  
pp. 1261-1268
Author(s):  
Shu Otani ◽  
Dang-Trang Nguyen ◽  
Kozo Taguchi
Keyword(s):  
Activated Carbon ◽  
Rhodopseudomonas Palustris ◽  
Ozone Treatment ◽  
Maximum Power Density ◽  
On Demand ◽  
Long Time ◽  
Dry Conditions ◽  
Carbon Sheet ◽  
Uv Ozone

In this study, a portable and disposable paper-based microbial fuel cell (MFC) was fabricated. The MFC was powered by Rhodopseudomonas palustris bacteria (R. palustris). An activated carbon sheet-based anode pre-loaded organic matter (starch) and R. palustris was used. By using starch in the anode, R. palustris-loaded on the anode could be preserved for a long time in dry conditions. The MFC could generate electricity on-demand activated by adding water to the anode. The activated carbon sheet anode was treated by UV-ozone treatment to remove impurities and to improve its hydrophilicity before being loaded with R. palustris. The developed MFC could generate the maximum power density of 0.9 μW/cm2 and could be preserved for long-term usage with little performance degradation (10% after four weeks).

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