Extrusion of AlSBA-15 molecular sieves: An industrial point of view |
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| Affiliation: | 1. Department of Chemistry, Chemical Technology, TU Kaiserslautern, P.O. Box 3049, D-67653 Kaiserslautern, Germany;2. Department of Chemistry, Anna University, Chennai 600 025, India;1. Department of Chemistry, Indian Institute of Technology Patna, Patna 800013, Bihar, India;2. Department of Materials Science and Engineering, Indian Institute of Technology Patna, Patna 800013, Bihar, India;1. Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Polizu Street No. 1, 011061 Bucharest, Romania;2. Laboratoire de Chimie, CNRS, Université Claude Bernard, ENS-Lyon, 46 Allée d’Italie, 69364 Lyon cedex 07, France;1. Department of Chemical Engineering, Ferdowsi University of Mashhad, P.O. Box 9177948944, Mashhad, Iran;2. Department of Chemistry, Ferdowsi University of Mashhad, P.O. Box 9177948974, Mashhad, Iran;3. Department of Engineering, Senior Process Engineer, South Pars Gas Complex, P. O. Box 311/75391, Assalouyeh, Iran;4. Research Institute of Petroleum Industry (RIPI), Azadi Sport Complex, P.O. Box 14665-1998, Tehran, Iran;1. Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China;2. College of Metrology and Measurement Engineering, China Jiliang University, Hangzhou 310018, China |
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| Abstract: | AlSBA-15 in the powder form with different nSi/nAl ratios (45, 136 and 215) were synthesized by hydrothermal technique. The powdered materials were made into cylindrical extrudates with the addition of bentonite as a binder. The AlSBA-15 materials were characterized by XRD, N2 adsorption, AAS and thermogravimetric analysis. The orderly growth of AlSBA-15 is evidenced by its XRD. The surface area of the powder catalyst is around 950 m2/g and that of extrudate is close to 600 m2/g. Vapor phase alkylation of phenol with tert-butanol was carried out over the extrudates of AlSBA-15 as a model reaction. The activity of AlSBA-15 extrudates follows the order: AlSBA-15 Si/Al = 45 > AlSBA-15 Si/Al = 136 > AlSBA-15 Si/Al = 215. The reaction products were found to be 2-TBP, 4-TBP and 2,4-DTBP. The selectivity to para tertiary butylation is higher than other reactions. |
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