Organic Chemistry Research Laboratory, Institute of Chemical Technology, N.M. Parekh Road, Matunga, Mumbai 400 019, India
Adv. Mater. Lett., 2014, 5 (10), pp 550-556
DOI: 10.5185/amlett.2014.2586
Publication Date (Web): Nov 09, 2014
Copyright © IAAM-VBRI Press
E-mail: samantsd@yahoo.com
Solvent free and selective isomerization of p-diethylbenzene (p-DEB) to m-diethylbenzene (m-DEB) was carried out using metal modified zeolite Hβ at high temperature. The metal modification of Hβ catalyst was carried out by using typical Lewis acidic cations Al3+, Fe3+, Ti4+, Sn4+ and Sb3+. The catalysts were characterized by XRD, FE-SEM, HR-TEM, FT-IR, N2-desorption (BET), ICP-AES, NH3-TPD, pyridine-IR, and TGA techniques for structure, morphology, acidity and stability. Particle size of the crystallites was determined by HR-TEM and the size was in the range of 15 - 35 nm. At 250oC, Al-Hβ, Fe-Hβ and Ti-Hβ catalysts showed 69 - 75% conversion of p-DEB with 43 - 51% selectivity towards m-DEB. This process is a greener alternative to the classical AlCl3 process. Further, such an isomerization would make the styrene manufacture more economic.
Zeolite H&beta, diethylbenzene, isomerization, heterogeneous catalysis, cation exchange
Adaptations and Lessons from COVID-19: A Perspective on How some Industries will be Impacted
Background and Strategies for Identification and Design of Materials for Thermochemical Energy Storage and Conversion
Phosphorus Gasification during the Reduction of basic Oxygen Furnace Slags in a Novel Reactor Concept
Concrete Electrical Resistivity at Varied Water, Chloride Contents and Porosity – Experiment, Modelling & Application
Water Purifying Bio-concrete
Local Fluctuations of Transformation to “Amorphous Diamond” from C60 Fullerenes and Neutron-irradiated Graphite under Shock-compression
Coulomb Drag of Electron-Electron Interactions in GaAs Bilayer with a Non Homogeneous Dielectric Background
Effect of Nd-concentration in Nd(2-x)FexO3 System on the Crystal Structure and Microwave Absorption Characteristics
Experimental Study on Strength Characteristics of Chopped Glass Fiber (CGF) Cement-Mortar Composites
Researcher of the Year 2020: Professor Herbert Gleiter, Germany
Self-sealing Polymeric Materials: Mechanism and Applications
Development of Ruthenium Complex Based Sensitizers, Organic Based Sensitizers, and Co-sensitization System for Dye-sensitized Solar Cells
Characterization of a New Copper Paste for Printed Electronics
Co-Ni Nanowires Arrays with Tunable Properties Obtained by Template Synthesis
Dispersion of Multi-Walled Carbon Nanotubes Using Polyvinylpyrrolidone for Application in Cement - Based Composites to Enhance Electrical Conductivity
Towards a Physics Based Model of Magnetic Barkhausen Noise in Steel
Sustainable Concept and Economic Evaluation of a Solar-Powered Hydrogen Generation Unit
Macrocell Corrosion and its Countermeasure for Reinforced Concrete after Patch Repair
Modelling the Height of Hydrothermally Synthesized Titanium Dioxide Nanostructures
Cellular SiC/Iron Alloy Composite
Conceptual Design of the CSP Lead Demonstrator SOLEAD
Numerical and Experimental Analyses of Equal Channel Angular Processing of Pure Aluminum
Copyright ©2010-2020 VBRI Press
Full Article