Catalyst for gas phase hydrogenation of acetic acid to prepare ethanol

Abstract

The invention provides a catalyst for gas phase hydrogenation of acetic acid to prepare ethanol, consisting of three parts: a main active component, an auxiliary agent and a carrier. The main active component is one or two of transition metal W and Mo. The auxiliary agent is one or more of Pd, Re, Pt, Rh, Ru or other noble metals. The carrier is active carbon or graphite or multi walled carbon nanotube. In a fixed bed reactor, at a certain temperature, under the effects of hydrogen pressure and the catalyst, acetic acid can be transformed into a product with ethanol as a major product with high activity and high selectivity.

Description

technical field [0001] The invention relates to a catalyst for preparing ethanol by gas-phase hydrogenation of acetic acid, and mainly relates to a catalyst for converting acetic acid and hydrogen into ethanol as a main product under gas-phase reaction conditions. Background technique [0002] Ethanol is an important solvent and chemical raw material, and it is also an ideal high-octane non-polluting vehicle fuel and its additives. Brazil has been using ethanol as vehicle fuel or fuel additive for many years. In recent years, my country has implemented the promotion of ethanol gasoline in many provinces, and the effect is obvious. With the improvement of environmental quality requirements, the development of alcohol fuel and the addition of alcohol or ether in gasoline have become the main way to improve automobile fuel. my country has a large population but insufficient arable land. Generally speaking, food is not abundant, and oil resources are relatively insufficient, wh...

AI Technical Summary

Problems solved by technology

Moreover, judging from the fact that the increase in grain prices has greatly exceeded the increase in ethanol prices, there is still a large room for ethanol prices to rise in the market outlook.

Images