HEPTYNE SELECTIVE HYDROGENATION WITH SUPPORTED NI, PO ANO W CATALYSTS ON Y-ALUMINA

Abstract

The selective hydrogenation of alkynes is very important from an academic and industrial standpoint. Industries such as petrochemical, pharmaceutical and agrochemical use these compounds as raw materials. Typical commercial catalysts for these reactions contain metals such as palladium. A great challenge is to find cheaper catalysts that are active and selective to be used in the production of alkenes via the parcial hydrogenation of alkynes. That is why the main objective of this work is to prepare monometallic catalysts of low loading of nickel (Ni), palladium (Pd) and tungsten to be evaluated in the parcial hydrogenation of 1-heptyne, a high molecular mass alkyne under mild operating conditions. The catalysts were characterized by Optical Emission Spectroscopy with Inductively Coupled Plasma (ICP-OES), X-Ray Diffraction (XRD), Temperature Programmed Reduction (TPR) and Hydrogen Chemisorption to identify the active species. In this work for all prepared catalysts the total conversion of alkyne and selectivity to 1-heptene (desired product) are compared at different temperatures to determine the optima! operating temperature.