Dehydrochlorination of 1,2-dichloroethane over a tetraphenylphosphonium chloride-supported carbon catalyst

2018 ◽  
Vol 42 (23) ◽  
pp. 18729-18738 ◽  
Author(s):  
Yanzhao Dong ◽  
Wei Zhao ◽  
You Han ◽  
Jinli Zhang ◽  
Yao Nian ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Activated Carbon ◽  
Carbon Catalyst ◽  
Tetraphenylphosphonium Chloride

An activated carbon-supported tetraphenylphosphonium chloride (TPPC/AC) catalyst shows excellent catalytic activity and stability for dehydrochlorination of 1,2-dichloroethane.

scholarly journals Utilization of Coconut Shell as Cr2O3 Catalyst Support for Catalytic Cracking of Jatropha Oil into Biofuel

2020 ◽  
Vol 23 (2) ◽  
pp. 39-45
Author(s):  
Isalmi Aziz ◽  
Yessinta Kurnianti ◽  
Nanda Saridewi ◽  
Lisa Adhani ◽  
Wahyu Permata
Keyword(s):  
Catalytic Activity ◽  
Activated Carbon ◽  
Surface Area ◽  
Catalytic Cracking ◽  
Catalyst Support ◽  
Proximate Analysis ◽  
Coconut Shell ◽  
Jatropha Oil ◽  
Carbon Catalyst ◽  
Shell Waste

Coconut shell waste is a waste that has a high carbon content. Carbon in coconut shell waste can be converted into activated carbon having a large surface area. This potential property is suitable to apply the coconut shell as catalyst support. To increase the catalytic activity, metal oxides such as Cr2O3 are impregnated. The purpose of this study is to synthesize Cr2O3/carbon catalyst and test its catalytic activity on catalytic cracking of Jatropha oil. The first stage was the synthesis of activated carbon and the determination of its proximate and ultimate. The second step was impregnation to produce Cr2O3/carbon catalyst. Furthermore, X-Ray Diffraction to determine crystallinity, Surface Area Analyzer to identify its surface area and Fourier Transform Infrared to analyze functional groups. Then the catalytic activity was tested on the catalytic cracking of Jatropha oil. In addition, the chemical compound composition and biofuel selectivity of the catalytic cracking product was determined using Gas Chromatography-Mass Spectrometer. Proximate analysis results showed that activated carbon contains 9%, 1%, 23%, and 67% of water, ash, evaporated substances, and bound carbon, respectively. The results of the ultimate analysis resulted in carbon (C), hydrogen (H), and nitrogen (N) contents of 65.422%, 3.384%, and 0.465%, correspondingly. The catalyst crystallinity test showed the presence of Cr2O3 peaks at 2θ: 24.43°; 33.47° and 36.25° according to JCPDS No. 84-1616. In the absorption area of 400-1000 cm-1 and the range of 2000 cm-1 showed the presence of Cr-O stretching due to Cr2O3 adsorbed into the activated carbon structure. The surface area of activated carbon and Cr2O3/carbon catalysts with a concentration of 1.3, and 5% was 8.930 m2/g; 47.205 m2/g; 50.562 m2/g; and 38.931 m2/g, respectively. The catalytic activity test presented that the best performance was showed by Cr2O3/carbon catalyst with a concentration of 5% indicated by conversion of Jatropha oil into biofuel of 67.777% with gasoline selectivity, kerosene, and diesel of 36.97%, 14.87%, and 15.94%, correspondingly.

scholarly journals Optimization on The Hydrolysis Process of Cellulose from Corn Husk to Glucose with Activated Carbon Catalyst Sulfonated

2021 ◽  
Vol 1858 (1) ◽  
pp. 012088
Author(s):  
Didi Dwi Anggoro ◽  
Luqman Buchori ◽  
Mohamad Djaeni ◽  
Ratnawati ◽  
Diah Susetyo Retnowati ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Carbon Catalyst ◽  
Corn Husk ◽  
Hydrolysis Process

scholarly journals Phosphorus-doped activated carbon catalyst for n-hexane dehydroaromatization reaction

2021 ◽  
pp. 106318
Author(s):  
Yong Li ◽  
Hong Zhao ◽  
Siyuan Chen ◽  
Shuhao Bao ◽  
Feifei Xing ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Carbon Catalyst ◽  
Phosphorus Doped

scholarly journals Role of CO2 During Oxidative Dehydrogenation of Propane Over Bulk and Activated-Carbon Supported Cerium and Vanadium Based Catalysts

2021 ◽  
Author(s):  
Petar Djinović ◽  
Janez Zavašnik ◽  
Janvit Teržan ◽  
Ivan Jerman
Keyword(s):  
Catalytic Activity ◽  
Activated Carbon ◽  
Oxidative Dehydrogenation ◽  
Active Phase ◽  
Lattice Oxygen ◽  
Chemisorbed Oxygen ◽  
Catalytically Active ◽  
Temperature Programmed ◽  
Propane Cracking

AbstractCeO2, V2O5 and CeVO4 were synthesised as bulk oxides, or deposited over activated carbon, characterized by XRD, HRTEM, CO2-TPO, C3H8-TPR, DRIFTS and Raman techniques and tested in propane oxidative dehydrogenation using CO2. Complete oxidation of propane to CO and CO2 is favoured by lattice oxygen of CeO2. The temperature programmed experiments show the ~ 4 nm AC supported CeO2 crystallites become more susceptible to reduction by propane, but less prone to re-oxidation with CO2 compared to bulk CeO2. Catalytic activity of CeVO4/AC catalysts requires a 1–2 nm amorphous CeVO4 layer. During reaction, the amorphous CeVO4 layer crystallises and several atomic layers of carbon cover the CeVO4 surface, resulting in deactivation. During reaction, V2O5 is irreversibly reduced to V2O3. The lattice oxygen in bulk V2O5 favours catalytic activity and propene selectivity. Bulk V2O3 promotes only propane cracking with no propene selectivity. In VOx/AC materials, vanadium carbide is the catalytically active phase. Propane dehydrogenation over VC proceeds via chemisorbed oxygen species originating from the dissociated CO2. Graphic Abstract

Side-chain alkylation of toluene with methanol over Cs2O-activated carbon catalyst

1984 ◽  
Vol 25 (1-2) ◽  
pp. 11-15 ◽  
Author(s):  
N. Yamaguchi ◽  
A. Kobayashi ◽  
T. Sodesawa ◽  
F. Nozaki
Keyword(s):  
Activated Carbon ◽  
Side Chain ◽  
Carbon Catalyst

Nitrogen-doped carbon sheets derived from chitin as non-metal bifunctional electrocatalysts for oxygen reduction and evolution

RSC Advances ◽  
2015 ◽  
Vol 5 (69) ◽  
pp. 56121-56129 ◽  
Author(s):  
Haoran Yuan ◽  
Lifang Deng ◽  
Xixi Cai ◽  
Shungui Zhou ◽  
Yong Chen ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Activated Carbon ◽  
Oxygen Reduction ◽  
High Catalytic Activity ◽  
Nitrogen Doped ◽  
Bifunctional Electrocatalysts ◽  
Nitrogen Doped Carbon

Nitrogen-doped activated carbon sheets were derived from chitin, which exhibited remarkable activity for ORR and high catalytic activity towards OER.

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