Catalyst for producing ethyl alcohol through C2 acid ester hydrogenation, and preparation and application of catalyst

Abstract

The invention relates to a bimetallic (non-precious metal) catalyst for producing ethyl alcohol through C2 acid ester hydrogenation, and a preparation method and application of the bimetallic (non-precious metal) catalyst. The catalyst is prepared from M1-M2 / SiO2, wherein M1 and M2 are one of non-precious metal Cu, Co and Ni oxides, the molar ratio of M1 to M2 is (40:1) to (1:40), and the M1-M2 / SiO2 is prepared through a co-ammonia still method. The catalyst can highly selectively convert C2 acid ester into the ethyl alcohol under the reaction conditions that the temperature is 150-250 DEG C,the hydrogen pressure is 1-5 MPa, the liquid air speed is 0.1-0.8 h<-1>, and the molar ratio of hydrogen to the C2 acid ester is 100-300.

Description

technical field

[0001] This patent relates to a catalyst for hydrogenation of C2 ester to produce ethanol and its preparation method and application.

[0002] technical background

[0003] Fuel ethanol generally refers to anhydrous ethanol with a volume concentration above 99.5%. It is not only an excellent fuel, but also an excellent fuel quality improver. Mixing it with gasoline in a certain proportion can form a new generation of clean and environmentally friendly vehicle fuel, which can reduce the emission of pollutants such as carbon monoxide and hydrocarbons in vehicle exhaust. my country's fuel ethanol industry started relatively late, but with the vigorous development of the fuel ethanol industry in recent years, my country's ethanol production has shown an upward trend. As of 2015, my country's ethanol production capacity has reached 11.329 million tons per year. It will reach about 40 million tons per year, and fuel ethanol consumption will account for 15% of all f...

Images