Synthesis of 4-aminobenzenesulfonic acid functionalized carbon catalyst through diazonium salt reduction for biodiesel production

2018 ◽  
Vol 173 ◽  
pp. 753-762 ◽  
Author(s):  
Shengli Niu ◽  
Hewei Yu ◽  
Yilin Ning ◽  
Xincheng Tang ◽  
Xiangyu Zhang ◽  
...  
Keyword(s):  
Diazonium Salt ◽  
Biodiesel Production ◽  
Carbon Catalyst ◽  
Salt Reduction

scholarly journals Tuning the Covering on Gold Surfaces by Grafting Amino-Aryl Films Functionalized with Fe(II) Phthalocyanine: Performance on the Electrocatalysis of Oxygen Reduction

Molecules ◽  
2021 ◽  
Vol 26 (6) ◽  
pp. 1631
Author(s):  
Camila F. Olguín ◽  
Nicolás Agurto ◽  
Carlos P. Silva ◽  
Carolina P. Candia ◽  
Mireya Santander-Nelli ◽  
...  
Keyword(s):  
Oxygen Reduction ◽  
Diazonium Salt ◽  
Gold Surface ◽  
Catalytic Performance ◽  
Reduction Reaction ◽  
Salt Reduction ◽  
Surface Electrodes ◽  
Custom Made ◽  
Aryl Diazonium Salt ◽  
Inorganic Molecules

Current selective modification methods, coupled with functionalization through organic or inorganic molecules, are crucial for designing and constructing custom-made molecular materials that act as electroactive interfaces. A versatile method for derivatizing surfaces is through an aryl diazonium salt reduction reaction (DSRR). A prominent feature of this strategy is that it can be carried out on various materials. Using the DSRR, we modified gold surface electrodes with 4-aminebenzene from 4-nitrobenzenediazonium tetrafluoroborate (NBTF), regulating the deposited mass of the aryl film to achieve covering control on the electrode surface. We got different degrees of covering: monolayer, intermediate, and multilayer. Afterwards, the ArNO2 end groups were electrochemically reduced to ArNH2 and functionalized with Fe(II)-Phthalocyanine to study the catalytic performance for the oxygen reduction reaction (ORR). The thickness of the electrode covering determines its response in front of ORR. Interestingly, the experimental results showed that an intermediate covering film presents a better electrocatalytic response for ORR, driving the reaction by a four-electron pathway.

Use of Selective Redox Cross-Inhibitors for the Control of Organic Layer Formation Obtained via Diazonium Salt Reduction

Langmuir ◽  
2019 ◽  
Vol 35 (34) ◽  
pp. 11048-11055 ◽  
Author(s):  
Isidoro López ◽  
Sylvie Dabos-Seignon ◽  
Tony Breton
Keyword(s):  
Diazonium Salt ◽  
Organic Layer ◽  
Layer Formation ◽  
Salt Reduction

scholarly journals Esterification of Glycerol with Acetic Acid in Bioadditive Triacetin with Fe2O3/Activated Carbon Catalyst

2020 ◽  
Vol 849 ◽  
pp. 125-129
Author(s):  
Zahrul Mufrodi ◽  
Shinta Amelia
Keyword(s):  
Gas Chromatography ◽  
Acetic Acid ◽  
Reaction Time ◽  
Catalyst Concentration ◽  
Raw Materials ◽  
Volume Ratio ◽  
Raw Material ◽  
Biodiesel Production ◽  
Carbon Catalyst ◽  
Mass Spectometry

Esterification and transesterification processes for biodiesel production generate glycerol which is possible to be converted into triacetin. It is an actractive bioadditive for increasing octane number of fuel. The production of this bioadditive in a biodiesel plant also increases the revenue as raw material comes from biodiesel process production as by-product.This study examines the effects of catalyst concentration and temperature on triacetin production using glycerol from esterification process and acetic acid at volume ratio of 1:3 as raw materials. An activated charcoal as catalyst is activated with sulfuric acid at concentration of 2% and 3% (w/w). The esterification temperatures are varied at 90 and 100°C and the reaction time is set for 3 hours. The samples are taken frequently at certain interval times of 15, 30, and 60 minutes for chemical analysis using Gas Chromatography Mass Spectometry. It is observed that using 2% and 3% (w/w) of catalysts at 90°C and 60 minutes reaction time converts 41.037% and 57.441% of glycerol respectively.

scholarly journals Batch to batch variation study for biodiesel production by hydrothermal carbon catalyst: preparation, characterization and its application

2020 ◽  
Vol 7 (1) ◽  
pp. 015521
Author(s):  
Safia S Memon ◽  
Najma Memon ◽  
Shahabuddin Memon ◽  
Abdesaddek Lachgar ◽  
Abdullah Memon
Keyword(s):  
Catalyst Preparation ◽  
Biodiesel Production ◽  
Carbon Catalyst

Biodiesel production from acid oils using sulfonated carbon catalyst derived from oil-cake waste

2014 ◽  
Vol 388-389 ◽  
pp. 167-176 ◽  
Author(s):  
Lakhya Jyoti Konwar ◽  
Rupali Das ◽  
Ashim Jyoti Thakur ◽  
Eero Salminen ◽  
Päivi Mäki-Arvela ◽  
...  
Keyword(s):  
Biodiesel Production ◽  
Carbon Catalyst

scholarly journals Preliminary Testing of Hybrid Catalytic-Plasma Reactor for Biodiesel Production Using Modified-Carbon Catalyst

2016 ◽  
Vol 11 (1) ◽  
pp. 59 ◽  
Author(s):  
Luqman Buchori ◽  
Istadi Istadi ◽  
Purwanto Purwanto ◽  
Anggun Kurniawan ◽  
Teuku Irfan Maulana
Keyword(s):  
Active Carbon ◽  
Thermal Plasma ◽  
Ambient Pressure ◽  
Plasma Reactor ◽  
Tubular Reactor ◽  
Biodiesel Production ◽  
Discharge Zone ◽  
Carbon Catalyst ◽  
Preliminary Testing ◽  
Non Thermal Plasma

<p>Preliminary testing of hybrid catalytic-plasma reactor for biodiesel production through transesterification of soybean oil with methanol over modified-carbon catalyst was investigated. This research focused on synergetic roles of non-thermal plasma and catalysis in the transesterification process. The amount of modified-carbon catalyst with grain size of 1.75 mm was placed into fixed tubular reactor within discharge zone. The discharge zone of the hybrid catalytic-plasma reactor was defined in the volume area between high voltage and ground electrodes. Weight Hourly Space Velocity (WHSV) of 1.85 h-1 of reactant feed was studied at reaction temperature of 65 oC and at ambient pressure. The modified-carbon catalyst was prepared by impregnation of active carbon within H2SO4 solution followed by drying at 100 oC for overnight and calcining at 300 oC for 3 h. It was found that biodiesel yield obtained using the hybrid catalytic-plasma reactor was 92.39% and 73.91% when using active carbon and modified-carbon catalysts, respectively better than without plasma. Therefore, there were synergetic effects of non-thermal plasma and catalysis roles for driving the transesterification process. Copyright © 2016 BCREC GROUP. All rights reserved</p><p><em>Received: 10<sup>th</sup> November 2015; Revised: 16<sup>th</sup> January 2016; Accepted: 16<sup>th</sup> January 2016</em></p><p><strong>How to Cite:</strong> Buchori, L., Istadi, I., Purwanto, P., Kurniawan, A., Maulana, T.I. (2016). Preliminary Testing of Hybrid Catalytic-Plasma Reactor for Biodiesel Production Using Modified-Carbon Catalyst.<em> Bulletin of Chemical Reaction Engineering &amp; Catalysis</em>, 11 (1): 59-65. (doi:10.9767/bcrec.11.1.416.59-65) </p><p><strong>Permalink/DOI</strong>: <a href="http://dx.doi.org/10.9767/bcrec.11.1.416.59-65">http://dx.doi.org/10.9767/bcrec.11.1.416.59-65</a></p><p> </p><p> </p>

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