Preparation method of catalyst for oxidative hydrogenation of propane

Abstract

The invention discloses a preparation method of a catalyst for oxidative hydrogenation of propane. The method comprises the following steps: grinding waste residual oil desulfurization catalysts into powder, adding a strong inorganic acid into the powder, filtering, adding an organic acid into the filtrate, then adding pseudo-boehmite, stirring the solution and heating at the same time until the solution is totally evaporated so as to obtain a solid substance, and then subjecting the solid substance to processes of drying, burning, and forming so as to obtain the catalyst for oxidative hydrogenation of propane. The preparation method fully utilizes the waste residual oil hydro-desulfurization catalysts, improves the resource utilization rate, and greatly reduces the cost; furthermore, the obtained catalyst has a large specific surface area, the active metal is highly dispersed on the catalyst surface, thus the utilization rate of active metal is improved, so the catalytic activity and selectivity of the catalyst are both improved.

Description

technical field [0001] The invention relates to a method for preparing a propane oxidative dehydrogenation catalyst, in particular to a method for preparing a propane oxidative dehydrogenation propylene catalyst from a waste residue oil hydrotreating catalyst. Background technique [0002] Every year, a large amount of spent catalysts that cannot be regenerated are produced all over the world, and hydrogenation catalysts account for a considerable proportion. Residue hydrotreating catalysts have a short service life, and cannot be regenerated after deactivation due to the deposition of a large amount of metal impurities such as Ni and V, especially in waste residue hydrodesulfurization catalysts, which contain 20 wt% to 40 wt% Molybdenum, cobalt, nickel and other valuable metal oxides, if these waste catalysts are discarded or used as fillers in construction and other industries, it will not only cause waste of resources, but also cause certain pollution to the environment d...

AI Technical Summary

Problems solved by technology

This method not only utilizes the Mo, Co and alumina supports in the spent hydrotreating catalyst, but also makes full use of the V deposited on the spent hydrotreating catalyst, which solves the pollution problem of the spent catalyst, saves resources and improves efficiency. It is easy to implement, and the performance of the obtained propane oxidative dehydrogenation catalyst is excellent