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Catalyst for hydrogenation of acetic acid to ethanol, preparation method thereof and method for hydrogenation of acetic acid to ethanol

A catalyst and ethanol production technology, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, preparation of hydroxyl compounds, etc., can solve the problem of high precious metal content and achieve the effect of improving the conversion rate

Active Publication Date: 2018-12-28
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the precious metal content is relatively high, 2%

Method used

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  • Catalyst for hydrogenation of acetic acid to ethanol, preparation method thereof and method for hydrogenation of acetic acid to ethanol
  • Catalyst for hydrogenation of acetic acid to ethanol, preparation method thereof and method for hydrogenation of acetic acid to ethanol
  • Catalyst for hydrogenation of acetic acid to ethanol, preparation method thereof and method for hydrogenation of acetic acid to ethanol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] This example is used to illustrate the preparation method of the catalyst for the hydrogenation of acetic acid to ethanol of the present invention.

[0048] The tetraammine platinum nitrate of 0.1g (Sinopharm Chemical Reagent Beijing Co., Ltd., purity 99% by weight), 0.28g of indium nitrate (Sinopharm Chemical Reagent Beijing Co., Ltd., purity 86% by weight) and 10ml of deionized water were mixed Stir evenly to obtain 39.7ml of impregnating solution containing Pt-In;

[0049] Saturation impregnation of the above impregnation solution to 9.85 g of Al 2 o 3 carrier, and aged at room temperature for 2 hours, then dried at 110°C for 4 hours, and calcined at 500°C for 4 hours to obtain a catalyst precursor;

[0050] The catalyst precursor is reduced, the reduction temperature is 350°C, the reduction time is 4h, the hydrogen content in the hydrogen-containing atmosphere is 5% by volume, and the volume space velocity of the hydrogen-containing atmosphere is 3000h -1 , to ob...

Embodiment 2

[0053] This example is used to illustrate the preparation method of the catalyst for the hydrogenation of acetic acid to ethanol of the present invention.

[0054] The platinum chloride of 0.175g (Sinopharm Chemical Reagent Beijing Co., Ltd., purity 99% by weight), 0.556g of indium nitrate (Sinopharm Chemical Reagent Beijing Co., Ltd., purity 86% by weight) and 12ml of deionized water were mixed and stirred evenly , to obtain 39.7ml of impregnation solution containing Pt-In;

[0055] Saturation impregnation of the above impregnation solution to 9.7 g of SiO 2 carrier, and aged at room temperature for 4 hours, then dried at 110°C for 4 hours, and calcined at 700°C for 4 hours to obtain a catalyst precursor;

[0056] The catalyst precursor is reduced, the reduction temperature is 400°C, the reduction time is 6h, the hydrogen content in the hydrogen-containing atmosphere is 20% by volume, and the volume space velocity of the hydrogen-containing atmosphere is 3500h -1 , to obtai...

Embodiment 3

[0059] This example is used to illustrate the preparation method of the catalyst for the hydrogenation of acetic acid to ethanol of the present invention.

[0060] The chloroplatinic acid Sinopharm Group Chemical Reagent Beijing Co., Ltd. of 0.3989g, purity 99% by weight), 0.84g of indium nitrate (Sinopharm Group Chemical Reagent Beijing Co., Ltd., purity 86% by weight) and 8ml of deionized water were mixed and stirred evenly, Obtain 51ml of impregnation solution containing Pt-In;

[0061] Saturation impregnation of the above impregnation solution to 9.6 g of ZrO 2 on the carrier, and left to age for 4 hours, dried at 110°C for 4 hours, and calcined at 500°C for 4 hours to obtain a catalyst precursor;

[0062] The catalyst precursor is reduced, the reduction temperature is 500°C, the reduction time is 2h, the hydrogen content in the hydrogen-containing atmosphere is 60% by volume, and the volume space velocity of the hydrogen-containing atmosphere is 2500h -1 , to obtain cat...

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Abstract

The invention discloses a catalyst for preparing ethanol through acetic acid hydrogenation, a preparation method of the catalyst and a method for preparing ethanol through acetic acid hydrogenation. The catalyst for preparing ethanol through acetic acid hydrogenation comprises active components and a carrier. The active components comprise Pt and In. The catalyst comprises, by weight, 0.1-2% of Pt, 0.1-10% of In and 88-99.8% of the carrier. Through use of the catalyst in acetic acid hydrogenation-based ethanol preparation, an acetic acid conversion rate and ethanol selectivity and yield are substantially improved and a catalyst preparation cost is reduced.

Description

technical field [0001] The invention relates to a catalyst for hydrogenation of acetic acid to produce ethanol, a method for preparing the catalyst for hydrogenation of acetic acid to produce ethanol, the catalyst for hydrogenation of acetic acid to produce ethanol prepared by the method, and a method for hydrogenation of acetic acid to produce ethanol. Background technique [0002] Ethanol is a basic industrial raw material and an important organic solvent. It is mainly used in food, chemical industry, military industry, medicine and other fields, and has extensive market demand. Ethanol is also a non-polluting high-octane gasoline additive. In recent years, oil prices have continued to rise and environmental pressure has become increasingly heavy. Countries around the world are seeking for the diversification of energy sources and the development of new alternative energy sources. As one of the emerging renewable green energy sources, ethanol can be added to gasoline in pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/62C07C31/08C07C29/149
Inventor 田树勋程继红狄伟何发泉孙琦
Owner CHNA ENERGY INVESTMENT CORP LTD
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