Síntese e caracterização de catalisadores de níquel para a reação de reforma a seco do metano.

Abstract

In this work the type mesoporous molecular sieve MCM-41 was synthesized by the hydrothermal method, obtaining a gel with the following molar composition: 1.00 surfactant: 4.00 Si02 ; 1.00 Na20: H20 200.00, which was subjected to a temperature of 100°C for 120 hours and then calcined at 500°C for 2 hours. The objective of this work was the synthesis of the support MCM-41 and it impregnate the active phase N i 2 + in different proportions (5, 10 and 15%) to be used as a catalyst in the reaction process of reform Dry methane aiming to produce gas synthesis. After calcination the support was characterized by X-ray diffraction (XRD), thermogravimetric analysis (TG/DTG), adsorption/desorption of nitrogen (BET method) and infrared spectroscopy (FTIR). After impregnation the active nickel metal phase support technique was subjected to temperature programmed reduction (TPR) for determining the temperature interval which occurs in the reduction of Ni and support in addition to revealing the possible interactions between the metal and the support. From analyzes of the physico-chemical and catalytic test verified that the support was successfully synthesized via hydrothermal method, and that this catalyst was efficient in the process of methane dry reforming.