International Science Community Association Research Journal of Chemical Sciences 2231 - 606X 5 2 2015 February 18 An Alternate Green Route to Synthesis of Mono and Diesters using Solid Acid Catalysts 48 58 EN Okechukwu R.I. 1 Department of Biological Sciences, Federal University of Technology, Owerri, Imo State, NIGERIA Iwuchukwu A.C. 2 Anuforo H.U. 3 Kumar D.Prem 1 Department of Chemistry, Sri Krishnadevaraya University, Anantapur–515 003, A.P., INDIA PraveenKumar A. 2 Reddy P.Raveendra 3 Yusuf A.J. 1 1 Department of Pharmaceutical and Medicinal Chemistry, Usmanu Danfodiyo University, Sokoto, NIGERIA Department of Pure and Applied Chemistry, Usmanu Danfodiyo University, Sokoto, NIGERIA Galadima A. 2 Garba 3 Z.N. 4 Nasir I. 5 Nirmala Baby 1 Department of Science and Humanities, Christian College of Engineering and Technology, Oddanchatram, Dindigul, Tamil Nadu, INDIA Manjula P. 2 Head, Department of Chemistry, APA College for Women, Palani, Dindigul, Tamil Nadu, INDIA Manimegalai S. 3 Department of Chemistry, APA College of Arts and Culture, Palani Dindigul, Tamil Nadu, INDIA ArthurRomuald Cakpo 1 Laboratoire de Chimie Inorganique et de l’Environnement (LaCIE), Faculté des Sciences et Techniques (FAST), Université d’Abomey -Calavi BP : 4521 Cotonou, République du BENIN Etienne Sagbo1 2 Laboratoire d’Hydrologie Appliquée (LHA), Université d’Abomey- Calavi, République du BENIN Daouda Mama 3 Laboratoire d’Etude et de Recherche en Chimie Appliquée (LERCA), Ecole polytechnique d’Abomey- Calavi (EPAC), Université etMohamedM. Soumanou 4 d’Abomey- Calavi, République du BENIN Davidenko O.A. 1 Chemical Department, Taras Shevchenko National University of Kyiv, 01601 Kyiv, UKRAINE SokolskyV. E. 2 The E.O. Paton Electric Welding Institute, National Academy of Sciences of Ukraine, 03680 Kyiv, UKRAINE LisnyakV. V. 3 RoikO. S. 4 Goncharov I.A. 5 GalinichV. I. 6 Onwu F.K 1 Department of Chemistry, Michael Okpara University of Agriculture Umudike, P.M.B 7267, Umuahia, Abia State, NIGERIA Ngele S.O. 2 Department of Industrial Chemistry, Ebonyi State University, P.M.B. 053 Abakaliki, NIGERIA Chandrashekhara K.G. 1 Department of Chemistry, Srinivas Institute of Technology, Merlapadav, Mangaluru-574 143, INDIA GopalakrishnaBhatN. 2 Department of Chemistry, Dr. M.V Shetty Institute of Technology, Moodbidri-574 225, INDIA Nagaraj P. 3 Shrinivas Ghodke 1 Applied Chemistry Department, Faculty of Technology and Engineering, The M. S. University of Baroda, Vadodara, 390 001, Gujarat, INDIA Chudasama Uma 2 > Research Paper 2015 1 29 2015 February 18 The conventional catalysts used in esterification reactions are liquid acids that are not environment friendly. Keeping with global trends, in the present endeavour, an effort has been made to replace the conventional homogeneous liquid acid catalysts by heterogeneous solid acid catalysts. M(IV) Phosphotungstates [M(IV)= Zr, Ti and Sn] which possess inherent acidity have been synthesized by sol-gel route whereas, 12-Tungstophosphoric acid (12-TPA) has been supported onto ZrO, TiO and SnO resulting in 12-TPA/ZrO, 12-TPA/TiO and 12-TPA/SnO which possesses induced acidity have been synthesized by process of anchoring and calcination. All the catalysts have been characterized for elemental analysis by ICP-AES, TGA, FTIR, SEM, EDX, XRD, surface area (by BET method) and surface acidity (by NH-TPD method). The potential utility of these materials as solid acid catalysts have been explored by studying esterification as a model reaction wherein mono and diesters have been synthesized. The catalytic activity of synthesized materials has been compared and correlated with acid properties of the materials. Copyright@ International Science Community Association