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AlSairafi SH, AlNajdi N, AlSheeha H, Rana MS. Synthesis of alumina support and effect of its properties on thiophene hydrodesulfurization. REACTION KINETICS MECHANISMS AND CATALYSIS 2019. [DOI: 10.1007/s11144-019-01706-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Potsi G, Ladavos AK, Petrakis D, Douvalis AP, Sanakis Y, Katsiotis MS, Papavassiliou G, Alhassan S, Gournis D, Rudolf P. Iron-substituted cubic silsesquioxane pillared clays: Synthesis, characterization and acid catalytic activity. J Colloid Interface Sci 2018; 510:395-406. [PMID: 28964947 DOI: 10.1016/j.jcis.2017.09.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 09/01/2017] [Accepted: 09/01/2017] [Indexed: 11/27/2022]
Abstract
Novel pillared structures were developed from the intercalation of iron-substituted cubic silsesquioxanes in a sodium and an acid-activated montmorillonite nanoclay and evaluated as acid catalysts. Octameric cubic oligosiloxanes were formed upon controlled hydrolytic polycondensation of the corresponding monomer (a diamino-alkoxysilane) and reacted with iron cations to form complexes that were intercalated within the layered nanoclay matrices. Upon calcination iron oxide nanoparticles are formed which are located on the silica cubes (pillars) and on the surfaces of the clay platelets. Acid activation of the nanoclay was performed in order to increase the number of acid active sites in the pristine clay and thus increase its catalytic activity. A plethora of analytical techniques including X-ray diffraction, thermal analyses, Fourier transform infrared, electron paramagnetic resonance, Raman, Mössbauer and X-ray photoelectron spectroscopies and porosimetry measurements were used in order to follow the synthesis steps and to fully characterize the final catalysts. The resulting pillared clays exhibit a high specific area and show significant acid catalytic activity that was verified using the catalytic dehydration of isopropanol asa probe reaction.
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Affiliation(s)
- Georgia Potsi
- Department of Materials Science & Engineering, University of Ioannina, 45110 Ioannina, Greece; Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.
| | - Athanasios K Ladavos
- School of Natural Resources and Enterprise Management, University of Patras, Agrinio 30100, Greece.
| | - Dimitrios Petrakis
- Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece.
| | | | - Yiannis Sanakis
- Institute of Nanoscience and Nanotechnology, NCSR "DEMOKRITOS", 15310 Ag. Paraskevi-Attikis, Athens, Greece.
| | - Marios S Katsiotis
- Department of Chemical Engineering, The Petroleum Institute, PO Box 2533, Abu Dhabi, United Arab Emirates.
| | - Georgios Papavassiliou
- Institute of Nanoscience and Nanotechnology, NCSR "DEMOKRITOS", 15310 Ag. Paraskevi-Attikis, Athens, Greece.
| | - Saeed Alhassan
- Department of Chemical Engineering, The Petroleum Institute, PO Box 2533, Abu Dhabi, United Arab Emirates.
| | - Dimitrios Gournis
- Department of Materials Science & Engineering, University of Ioannina, 45110 Ioannina, Greece.
| | - Petra Rudolf
- Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.
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Mohammadparast F, Halladj R, Askari S. The Crystal Size Effect of Nano-Sized ZSM-5 in the Catalytic Performance of Petrochemical Processes: A Review. CHEM ENG COMMUN 2014. [DOI: 10.1080/00986445.2014.952815] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Badoga S, Sharma RV, Dalai AK, Adjaye J. Hydrotreating of Heavy Gas Oil on Mesoporous Mixed Metal Oxides (M–Al2O3, M = TiO2, ZrO2, SnO2) Supported NiMo Catalysts: Influence of Surface Acidity. Ind Eng Chem Res 2014. [DOI: 10.1021/ie500840d] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sandeep Badoga
- Catalysis
and Chemical Reaction Engineering Laboratories, Department of Chemical
Engineering, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5A9, Canada
| | - Rajesh V. Sharma
- Catalysis
and Chemical Reaction Engineering Laboratories, Department of Chemical
Engineering, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5A9, Canada
| | - Ajay K. Dalai
- Catalysis
and Chemical Reaction Engineering Laboratories, Department of Chemical
Engineering, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5A9, Canada
| | - John Adjaye
- Syncrude
Edmonton Research Centre, Edmonton, Alberta T6N 1H4, Canada
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Torres-Mancera P, Rayo P, Ancheyta J, Marroquín G, Centeno G, Alonso F. Catalyst deactivation pattern along a residue hydrotreating bench-scale reactor. Catal Today 2014. [DOI: 10.1016/j.cattod.2013.10.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Patrick F, Sugunan S. Cracking of cumene on tungsten promoted ceria catalysts. REACTION KINETICS MECHANISMS AND CATALYSIS 2011. [DOI: 10.1007/s11144-011-0309-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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