Effect of Pressure on Na0.5La0.5Ni0.3Al0.7O2.5 Perovskite Catalyst for Dry Reforming of CH4

In this paper, a comprehensive study was carried out on the application of perovskite catalyst in dry reforming of CH4. The perovskite catalyst was prepared using a sol–gel method. The prepared samples were characterized by N2 adsorption/desorption, TPR,...

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Main Authors:	Anis Hamza Fakeeha, Ahmed Sadeq Al-Fatesh, Jehad K. Abu-Dahrieh, Ahmed Aidid Ibrahim, Samsudeen Olajide Kasim, Ahmed Elhag Abasaeed
Format:	Article
Language:	English
Published:	MDPI AG 2020-04-01
Series:	Catalysts
Subjects:	Al dry reforming La methane Ni perovskite
Online Access:	https://www.mdpi.com/2073-4344/10/4/379

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spelling	doaj-432df1e5dc1542298c9b5d98020dd8c72020-11-25T02:04:11ZengMDPI AGCatalysts2073-43442020-04-011037937910.3390/catal10040379Effect of Pressure on Na<sub>0.5</sub>La<sub>0.5</sub>Ni<sub>0.3</sub>Al<sub>0.7</sub>O<sub>2.5</sub> Perovskite Catalyst for Dry Reforming of CH<sub>4</sub>Anis Hamza Fakeeha0Ahmed Sadeq Al-Fatesh1Jehad K. Abu-Dahrieh2Ahmed Aidid Ibrahim3Samsudeen Olajide Kasim4Ahmed Elhag Abasaeed5Chemical Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi ArabiaChemical Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi ArabiaSchool of Chemistry and Chemical Engineering, Queen’s University Belfast, Belfast BT9 5AG, Northern IrelandChemical Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi ArabiaChemical Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi ArabiaChemical Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi ArabiaIn this paper, a comprehensive study was carried out on the application of perovskite catalyst in dry reforming of CH<sub>4</sub>. The perovskite catalyst was prepared using a sol–gel method. The prepared samples were characterized by N<sub>2</sub> adsorption/desorption, TPR, XRD, CO<sub>2</sub>-TPD, TGA, TPO, Raman, and SEM techniques. In addition, the effect of operating pressure, namely, 1 bar, 3 bar, 5 bar, and 7 bar, temperature (500–800 °C) was evaluated. The characterization results indicated that catalysts operated at 1 bar, gas hourly space velocity of 84000 (mL/g/h) gave the best catalytic performance. CH<sub>4</sub> and CO<sub>2</sub> conversions of 77 and 80% were obtained at 1 bar and at 700 °C reaction temperature. The increase of reaction temperatures from 500 °C to 800 °C increased the reaction rate and hence the methane and carbon dioxide conversions were increased. A unity ratio of H<sub>2</sub>/CO was obtained at 1 bar for temperatures 600 °C and above. Similarly, the time on stream tests, obtained at a 700 °C reaction temperature, showed that the best ratio in terms of the closeness of unity and the stable profile could be attained when the pressure was set to 1 bar. The TGA analysis showed the drop of mass due to oxidation of carbon deposits, which started at 500 °C. The catalyst operated at 1 bar produced the least amount of carbon, equivalent to 35% weight loss, while the 3 and 5 bar operated catalysts generated carbon formation, equivalent to 65% weight loss. However, the 7 bar operated catalyst resulted the highest accumulation of carbon formation, equivalent to 83% weight reduction. Hence, the TGA profile indicated the relative carbon deposition on the catalyst, which was dependent of the operated pressure and hence confirmed the suitability operation pressure of 1 bar. The characterizations of the Raman, EDX, TGA, and TPO all presented the formation of carbon.https://www.mdpi.com/2073-4344/10/4/379Aldry reformingLamethaneNiperovskite
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Anis Hamza Fakeeha Ahmed Sadeq Al-Fatesh Jehad K. Abu-Dahrieh Ahmed Aidid Ibrahim Samsudeen Olajide Kasim Ahmed Elhag Abasaeed
spellingShingle	Anis Hamza Fakeeha Ahmed Sadeq Al-Fatesh Jehad K. Abu-Dahrieh Ahmed Aidid Ibrahim Samsudeen Olajide Kasim Ahmed Elhag Abasaeed Effect of Pressure on Na<sub>0.5</sub>La<sub>0.5</sub>Ni<sub>0.3</sub>Al<sub>0.7</sub>O<sub>2.5</sub> Perovskite Catalyst for Dry Reforming of CH<sub>4</sub> Catalysts Al dry reforming La methane Ni perovskite
author_facet	Anis Hamza Fakeeha Ahmed Sadeq Al-Fatesh Jehad K. Abu-Dahrieh Ahmed Aidid Ibrahim Samsudeen Olajide Kasim Ahmed Elhag Abasaeed
author_sort	Anis Hamza Fakeeha
title	Effect of Pressure on Na<sub>0.5</sub>La<sub>0.5</sub>Ni<sub>0.3</sub>Al<sub>0.7</sub>O<sub>2.5</sub> Perovskite Catalyst for Dry Reforming of CH<sub>4</sub>
title_short	Effect of Pressure on Na<sub>0.5</sub>La<sub>0.5</sub>Ni<sub>0.3</sub>Al<sub>0.7</sub>O<sub>2.5</sub> Perovskite Catalyst for Dry Reforming of CH<sub>4</sub>
title_full	Effect of Pressure on Na<sub>0.5</sub>La<sub>0.5</sub>Ni<sub>0.3</sub>Al<sub>0.7</sub>O<sub>2.5</sub> Perovskite Catalyst for Dry Reforming of CH<sub>4</sub>
title_fullStr	Effect of Pressure on Na<sub>0.5</sub>La<sub>0.5</sub>Ni<sub>0.3</sub>Al<sub>0.7</sub>O<sub>2.5</sub> Perovskite Catalyst for Dry Reforming of CH<sub>4</sub>
title_full_unstemmed	Effect of Pressure on Na<sub>0.5</sub>La<sub>0.5</sub>Ni<sub>0.3</sub>Al<sub>0.7</sub>O<sub>2.5</sub> Perovskite Catalyst for Dry Reforming of CH<sub>4</sub>
title_sort	effect of pressure on na<sub>0.5</sub>la<sub>0.5</sub>ni<sub>0.3</sub>al<sub>0.7</sub>o<sub>2.5</sub> perovskite catalyst for dry reforming of ch<sub>4</sub>
publisher	MDPI AG
series	Catalysts
issn	2073-4344
publishDate	2020-04-01
description	In this paper, a comprehensive study was carried out on the application of perovskite catalyst in dry reforming of CH<sub>4</sub>. The perovskite catalyst was prepared using a sol–gel method. The prepared samples were characterized by N<sub>2</sub> adsorption/desorption, TPR, XRD, CO<sub>2</sub>-TPD, TGA, TPO, Raman, and SEM techniques. In addition, the effect of operating pressure, namely, 1 bar, 3 bar, 5 bar, and 7 bar, temperature (500–800 °C) was evaluated. The characterization results indicated that catalysts operated at 1 bar, gas hourly space velocity of 84000 (mL/g/h) gave the best catalytic performance. CH<sub>4</sub> and CO<sub>2</sub> conversions of 77 and 80% were obtained at 1 bar and at 700 °C reaction temperature. The increase of reaction temperatures from 500 °C to 800 °C increased the reaction rate and hence the methane and carbon dioxide conversions were increased. A unity ratio of H<sub>2</sub>/CO was obtained at 1 bar for temperatures 600 °C and above. Similarly, the time on stream tests, obtained at a 700 °C reaction temperature, showed that the best ratio in terms of the closeness of unity and the stable profile could be attained when the pressure was set to 1 bar. The TGA analysis showed the drop of mass due to oxidation of carbon deposits, which started at 500 °C. The catalyst operated at 1 bar produced the least amount of carbon, equivalent to 35% weight loss, while the 3 and 5 bar operated catalysts generated carbon formation, equivalent to 65% weight loss. However, the 7 bar operated catalyst resulted the highest accumulation of carbon formation, equivalent to 83% weight reduction. Hence, the TGA profile indicated the relative carbon deposition on the catalyst, which was dependent of the operated pressure and hence confirmed the suitability operation pressure of 1 bar. The characterizations of the Raman, EDX, TGA, and TPO all presented the formation of carbon.
topic	Al dry reforming La methane Ni perovskite
url	https://www.mdpi.com/2073-4344/10/4/379
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Effect of Pressure on Na<sub>0.5</sub>La<sub>0.5</sub>Ni<sub>0.3</sub>Al<sub>0.7</sub>O<sub>2.5</sub> Perovskite Catalyst for Dry Reforming of CH<sub>4</sub>

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