Modern Chemistry & Applications

Valorization of bioglycerol to value added products: Sulfonated mesoporous polydivinylbenzene (PDVB) as an efficient solid acid catalyst for room temperature synthesis of solketal

International Conference on Applied Chemistry

October 17-18, 2016 Houston, USA

Sanjeev P Maradur, Sathyapal R Churipard, Pandian Manjunathan, Ganapati V Shanbhag and A B Halgeri

Poornaprajna Institute of Scientific Research, India

Scientific Tracks Abstracts: Mod Chem appl

Abstract:

Acetalization of glycerol with acetone is very significant reaction for synthesis of solketal (2, 2-dimethyl-4- hydroxymethyl-1, 3-dioxolane). Solketal can be used as an additive in formulation of diesel, biodiesel and gasoline fuels. It decreases the viscosity, improves cold properties and provides the required flash point to the biodiesel. These oxygenated products when blended with the diesel fuel curtail the uncontrolled emission of carbon monoxide, particles, hydrocarbons and aldehydes. Challenge in the synthesis of glycerol derivatives is the formation of by-product water which hinders the catalytic activity in case of silica due to low hydrothermal stability and commercial resins being too hydrophilic. Moreover, the commercial resins are not characterized by well-defined pores. Diffusion limitation and polymer swelling remain as disadvantage despite the development of large-pore resins, low-swelling polymers. In this work, sulfonic acid functionalized mesoporous polymer catalyst (MP-SO3H) was prepared by post synthetic modification of mesoporous polydivinylbenene by incorporating sulfonic acid moiety using conc. H2SO4. The synthesized materials were characterized by using several physicochemical techniques and their performance was evaluated for room temperature liquid phase acetalization of glycerol with acetone. MP-SO3H catalyst performed better than other conventional solid acid catalysts with 94 % glycerol conversion and 98.5 % selectivity for solketal. The high activity of MP-SO3H catalyst can be attributed due to facile diffusion of reactants and products in the mesoporous environment together with an optimized balance of acid functionalization. Glycerol conversion increased with increase in the total acidity of the catalyst. Amount of acidity and surface density of (H+) ions were found to have a direct correlation with catalyst performance.

Biography :

Sanjeev P Maradur has completed his PhD from Shivaji University Kolhapur, India in 2006 and worked as Research Scientist in Jubilant Life Sciences Ltd, Noida, India. He then moved to South Korea in 2009 for his Post-doctoral studies to work with Prof. R Ryoo at Center for Functional Nanomaterials, Korea Advanced Institute of Science and Technology (KAIST), and Prof. K S Yang at Alan MacDiarmid Energy Research Institute (AMERI), Chonnam National University, Gwangju Republic of Korea. He then moved to University of Oklahoma at Norman to work with Prof. Kenneth M Nicholas on catalytic conversion of biomass derived polyols to olefins. He is presently Asst. Professor at Poornaprajna Institute of Scientific Research, Bangalore, India. He has published more than 15 papers in reputed journals and two patents to his credit. He has guided 2 MTech students and 3 graduate students are presently working in his group. He is a recipient Young Scientist Research Award from Government of Karnataka, India. He is the Co-Investigator for industry project sponsored by GTC Technology Inc, USA and Hindustan Petroleum Corporation Ltd, India.

Email: sanjeevpm@gmail.com