Deoxygenation of pyrolysis vapor from palm fruit cake over NiMo/γ-Al2O3 catalyst: Effect of CeO2, TiO2, and ZrO2 additives

2021 ◽  
pp. 111712
Author(s):  
Worada Moonsrikaew ◽  
Apinya Duangchan
Keyword(s):  
Palm Fruit ◽  
Catalyst Effect ◽  
Al2o3 Catalyst

scholarly journals Hydrogenation of Acetic Acid Over PtSn/Al2O3 Catalyst: Effect of Shaping Method, Kinetics and Stability

2015 ◽  
Vol 27 (4) ◽  
pp. 1293-1298 ◽  
Author(s):  
Ke Zhang ◽  
Haitao Zhang ◽  
Hongfang Ma ◽  
Weiyong Ying ◽  
Dingye Fang
Keyword(s):  
Acetic Acid ◽  
Catalyst Effect ◽  
Al2o3 Catalyst

Glycerol Steam Reforming Over Ni–Fe–Ce/Al2O3 Catalyst: Effect of Cerium

2016 ◽  
Vol 16 (2) ◽  
pp. 1855-1858 ◽  
Author(s):  
Gwang-Sub Go ◽  
Yoo-Jin Go ◽  
Hong-Joo Lee ◽  
Dong-Ju Moon ◽  
Nam-Cook Park ◽  
...  
Keyword(s):  
Steam Reforming ◽  
Catalyst Effect ◽  
Al2o3 Catalyst

Chemisorption of oxygen and hydrogenation of ethylene on sulphided Co-Mo/Al2O3 catalyst. Effect of activation process

1989 ◽  
Vol 54 (8) ◽  
pp. 2069-2082 ◽  
Author(s):  
Hana Zahradníková ◽  
Ludvík Beránek
Keyword(s):  
Active Sites ◽  
Room Temperature ◽  
Dynamic Method ◽  
Activation Process ◽  
Subsequent Reduction ◽  
Oxygen Chemisorption ◽  
Hydrogenation Reactions ◽  
Catalyst Effect ◽  
Al2o3 Catalyst ◽  
Hydrogenation Of Ethylene

Oxygen chemisorption by pulse dynamic method at room temperature and the activity for ethylene hydrogenation at 300 °C in a flow regime were determined for Co-Mo/Al2O3 catalyst CHEROX 36-01 sulphided by a H2S/H2 (1:10) mixture at 400 °C. The measurements were carried out either immediately after sulphidation or after subsequent reduction of the sulphided catalyst by hydrogen. The chemisorption of oxygen was measured both prior to and after the catalytic reaction. In addition, the reactivation of the catalyst was examined after its passivation by oxygen chemisorption. The reactivation was effected either by resulphidation or by reduction with hydrogen at 400 °C, on repeated reactivation also by combination of both procedures, variables being the time of activation and reactivation steps. The results are discussed from the standpoint of the structure and interrelation between active sites for oxygen chemisorption and catalytic, especially hydrogenation reactions. Formation of coordinately unsaturated sites and SH groups is emphasized. The reasons of possible failures in correlations between chemisorption capacity for oxygen and catalytic activity are mentioned.

Accelerated pre-coking of NiMo/γ-Al2O3 catalyst: Effect on the hydroprocessing activity of vacuum residue

Fuel ◽  
2019 ◽  
Vol 235 ◽  
pp. 437-447 ◽  
Author(s):  
K. Kohli ◽  
R. Prajapati ◽  
Samir K. Maity ◽  
M. Sau ◽  
Brajendra K. Sharma
Keyword(s):  
Vacuum Residue ◽  
Catalyst Effect ◽  
Al2o3 Catalyst

scholarly journals Direct conversion of natural gas into COx-free hydrogen and MWCNTs over commercial Ni–Mo/Al2O3 catalyst: Effect of reaction parameters

2013 ◽  
Vol 22 (1) ◽  
pp. 27-34 ◽  
Author(s):  
Ahmed E. Awadallah ◽  
Fatma Kh. Gad ◽  
Ateyya A. Aboul-Enein ◽  
Mahmoud R. Labib ◽  
Ahmed K. Aboul-Gheit
Keyword(s):  
Natural Gas ◽  
Direct Conversion ◽  
Reaction Parameters ◽  
Free Hydrogen ◽  
Catalyst Effect ◽  
Al2o3 Catalyst

scholarly journals Fischer-Tropsch Synthesis over Unpromoted Co/ɣ-Al2O3 Catalyst: Effect of Activation with CO Compared to H2 on Catalyst Performance

2019 ◽  
Vol 14 (1) ◽  
pp. 35 ◽  
Author(s):  
Phathutshedzo Rodney Khangale ◽  
Reinout Meijboom ◽  
Kalala Jalama
Keyword(s):  
Liquid Product ◽  
Product Formation ◽  
Tropsch Synthesis ◽  
Carbide Formation ◽  
Incipient Wetness Impregnation ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Methane Selectivity ◽  
Catalyst Effect ◽  
Al2o3 Catalyst

The effect of activating Co/Al2O3 catalyst by diluted CO or H2 on catalyst performance for Fischer-Tropsch reaction was investigated. The catalyst was prepared by incipient wetness impregnation of the support and characterized using BET N2 physisorption, SEM, and XRD analyses. The reduction behavior of the catalyst in presence of CO and H2 individually was evaluated using TPR analyses. The data reveal that CO activates Co/Al2O3 catalyst at a lower temperature than H2 and produces a catalyst with higher rate for liquid product formation. It also leads to higher methane selectivity probably due to some cobalt carbide formation. Copyright © 2019 BCREC Group. All rights reservedReceived: 9th April 2018; Revised: 21st August 2018; Accepted: 27th August 2018; Available online: 25th January 2019; Published regularly: April 2019How to Cite: Khangale, P.R., Meijboom, R., Jalama, K. (2019). Fischer-Tropsch Synthesis over Unpromoted Co/ɣ-Al2O3 Catalyst: Effect of Activation with CO Compared to H2 on Catalyst Performance. Bulletin of Chemical Reaction Engineering & Catalysis, 14 (1): 35-41 (doi:10.9767/bcrec.14.1.2519.35-41)Permalink/DOI: https://doi.org/10.9767/bcrec.14.1.2519.35-41 

Enhanced Fischer–Tropsch activity on Co/P–Al2O3 catalyst: Effect of phosphorous content

2009 ◽  
Vol 10 (9) ◽  
pp. 1358-1362 ◽  
Author(s):  
Jong Wook Bae ◽  
Seung-Moon Kim ◽  
Yun-Jo Lee ◽  
Min-Jae Lee ◽  
Ki-Won Jun
Keyword(s):  
Fischer Tropsch ◽  
Phosphorous Content ◽  
Catalyst Effect ◽  
Al2o3 Catalyst
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