Oxidative dehydrogenation of propane over V-Mo-Nb catalysts

• Grant number: 12/23064-1
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: February 01, 2013
• End date: January 31, 2014
• Field of knowledge: Engineering - Chemical Engineering - Chemical Technology
• Principal Investigator: Gilberto Garcia Cortez
• Grantee: Bianca Daniela Costa
• Host Institution: Escola de Engenharia de Lorena (EEL). Universidade de São Paulo (USP). Lorena , SP, Brazil

Abstract

Oxidative dehydrogenation (ODH) of light alkanes is one possible solution to the energetic problems related to catalytic dehydrogenation and steam cracking for production of olefins. Many catalytic systems have been investigated by scientists in an attempt to find better catalytic system. The most studied catalysts described on literature were based on vanadium oxide as active part on many oxides, because great results for ODH of alkanes C2-C4 have been shown, as recently seen. For ODH of propane to propylene, the most studied systems were based on vanadium and molybdenum at temperatures around 450 and 550 °C. Researches show the niobium oxide has high selectivity on ODH of propane; however your catalytic activity is moderated. It's also known that the catalytic activity of niobium oxide can be increased by the adding of vanadium oxide, without changing the selectivity. Usually, the molybdenum is used as promoter in catalysts of V2O5 supported. In this way, the principal objective of this study will be evaluating the catalytic activity of vanadium supported on molybdenum-niobium oxide prepared by sol-gel method.(AU)