Catalyst for preparing alcohol through hydrogenation of acetic acid and preparation method

Abstract

The invention discloses a catalyst for preparing alcohol through hydrogenation of acetic acid, and a preparation method of the catalyst. The catalyst is a multicomponent load catalyst and comprises ingredients a, b and c, and a carrier, wherein the ingredient a is one or more of calcium, potassium, sodium, barium, strontium, calcium oxide, potassium oxide, sodium oxide, barium oxide and strontium oxide; the ingredient b is one or more of tin, cobalt, molybdenum, nickel, iron, tin oxide, cobalt oxide, molybdenum oxide, nickel oxide and iron oxide; the ingredient c is one of platinum, palladium, ruthenium, rhodium, platinum oxide, palladium oxide, ruthenium oxide and rhodium oxide; the carrier is silicon dioxide, cerium dioxide, titanium dioxide, graphite, aluminum oxide or active carbon; and the mass ratio of the ingredient a to the ingredient b to the ingredient c to the carrier is (1-20):(0.5-2):(0.5-1):100. The multicomponent load catalyst is prepared by a multistep impregnation method, and used for preparing alcohol through the hydrogenation of acetic acid, and results prove that the catalyst is excellent in catalytical performance, long in service life and high in reaction stability.

Description

technical field

[0001] The invention belongs to the field of catalysts, and relates to a catalyst and a preparation method for hydrogenating acetic acid to produce ethanol. Background technique

[0002] Ethanol is one of the important chemical raw materials, it is widely used in medicine, food, chemical industry, military industry and other fields. In recent years, as a vehicle fuel, the demand for ethanol has been increasing. The United States has sold ethanol gasoline for more than 20 years, and 40% of light vehicles in Brazil use ethanol fuel. The current demand for industrial ethanol in China is about 3 million tons per year, and the annual growth rate is expected to be between 8% and 10%. The demand for fuel ethanol for vehicles is also growing. It is estimated that the number of automobiles in my country will reach 160 million to 180 million in 2015. If all ethanol gasoline is used, the demand for fuel ethanol will reach 10 million tons. The total ethanol production i...

Examples

Embodiment 1

[0027] 1) Add 1.0g SiO 2 With Ca(NO 3 ) 2 The solution (0.67ml, 3.0M) was soaked overnight, baked at 100°C for 12h, and roasted at 400°C for 2h.

[0028] 2) The sample obtained in 1) was treated with SnCl 2 The solution (1.0ml, 0.05M) was impregnated overnight, baked at 100°C for 12h, and calcined at 400°C for 2h.

[0029] 3) The sample obtained in 2) was treated with H 2 PtCl 6 The solution (1.0ml, 0.05M) was impregnated overnight, baked at 100°C for 12h, and calcined at 400°C for 2h.

Embodiment 2

[0031] 1) Add 1.0g SiO 2 With Ca(NO 3 ) 2 The solution (2.0ml, 1.0M) was impregnated overnight, baked at 100°C for 12h, and baked at 400°C for 2h.

[0032] 2) The sample obtained in 1) was treated with SnCl 2 The solution (1.0ml, 0.05M) was impregnated overnight, baked at 100°C for 12h, and calcined at 400°C for 2h.

[0033] 3) The sample obtained in 2) was treated with H 2 PtCl 6 The solution (1.0ml, 0.05M) was impregnated overnight, baked at 100°C for 12h, and calcined at 400°C for 2h.

Embodiment 3

[0035] 1) Add 1.0g SiO 2 With Ca(CH 3 COO) 2 The solution (0.67ml, 3.0M) was soaked overnight, baked at 100°C for 12h, and roasted at 400°C for 2h.

[0036] 2) The sample obtained in 1) was treated with SnCl 2 The solution (1.0ml, 0.05M) was impregnated overnight, baked at 100°C for 12h, and calcined at 400°C for 2h.

[0037] 3) The sample obtained in 2) was treated with H 2 PtCl 6 The solution (1.0ml, 0.05M) was impregnated overnight, baked at 100°C for 12h, and calcined at 400°C for 2h.

technical field

[0001] The invention belongs to the field of catalysts, and relates to a catalyst and a preparation method for hydrogenating acetic acid to produce ethanol. Background technique

[0002] Ethanol is one of the important chemical raw materials, it is widely used in medicine, food, chemical industry, military industry and other fields. In recent years, as a vehicle fuel, the demand for ethanol has been increasing. The United States has sold ethanol gasoline for more than 20 years, and 40% of light vehicles in Brazil use ethanol fuel. The current demand for industrial ethanol in China is about 3 million tons per year, and the annual growth rate is expected to be between 8% and 10%. The demand for fuel ethanol for vehicles is also growing. It is estimated that the number of automobiles in my country will reach 160 million to 180 million in 2015. If all ethanol gasoline is used, the demand for fuel ethanol will reach 10 million tons. The total ethanol production i...

Examples

Embodiment 1

[0027] 1) Add 1.0g SiO 2 With Ca(NO 3 ) 2 The solution (0.67ml, 3.0M) was soaked overnight, baked at 100°C for 12h, and roasted at 400°C for 2h.

[0028] 2) The sample obtained in 1) was treated with SnCl 2 The solution (1.0ml, 0.05M) was impregnated overnight, baked at 100°C for 12h, and calcined at 400°C for 2h.

[0029] 3) The sample obtained in 2) was treated with H 2 PtCl 6 The solution (1.0ml, 0.05M) was impregnated overnight, baked at 100°C for 12h, and calcined at 400°C for 2h.

Embodiment 2

[0031] 1) Add 1.0g SiO 2 With Ca(NO 3 ) 2 The solution (2.0ml, 1.0M) was impregnated overnight, baked at 100°C for 12h, and baked at 400°C for 2h.

[0032] 2) The sample obtained in 1) was treated with SnCl 2 The solution (1.0ml, 0.05M) was impregnated overnight, baked at 100°C for 12h, and calcined at 400°C for 2h.

[0033] 3) The sample obtained in 2) was treated with H 2 PtCl 6 The solution (1.0ml, 0.05M) was impregnated overnight, baked at 100°C for 12h, and calcined at 400°C for 2h.

Embodiment 3

[0035] 1) Add 1.0g SiO 2 With Ca(CH 3 COO) 2 The solution (0.67ml, 3.0M) was soaked overnight, baked at 100°C for 12h, and roasted at 400°C for 2h.

[0036] 2) The sample obtained in 1) was treated with SnCl 2 The solution (1.0ml, 0.05M) was impregnated overnight, baked at 100°C for 12h, and calcined at 400°C for 2h.

[0037] 3) The sample obtained in 2) was treated with H 2 PtCl 6 The solution (1.0ml, 0.05M) was impregnated overnight, baked at 100°C for 12h, and calcined at 400°C for 2h.

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