Catalyst for gas phase hydrogenation of acetic acid to prepare ethanol

A technology for preparing ethanol and catalysts, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, organic chemistry, etc., to reduce energy consumption and improve selectivity

Inactive Publication Date: 2011-11-02
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, judging from the fact that the increase in grain prices has greatly exceeded the increas

Method used

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  • Catalyst for gas phase hydrogenation of acetic acid to prepare ethanol

Examples

Experimental program
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Example Embodiment

[0026] Example 1

[0027] The catalyst of Example 1 is 10% Mo-5% Re-1.0% Ru / apricot core charcoal. Prepare by conventional dipping method: take 8.40 g apricot core charcoal (20-40 mesh), soak in 3%wt nitric acid, boil for 4 hours before use, wash with distilled water to pH=7.0, and dry at 120°C for 6 hours, configure 15ml contains 1.8971g (NH 4 ) 2 Mo 2 O 4 .4H 2 O, 0.7203 g NH 4 ReO 4 And 0.1996 g RuCl 3 .3H 2 O aqueous solution, air dry naturally, and dry in an oven at 120°C for 4 hours. Before use in 300℃ hydrogen (atmospheric pressure, 1000h -1 ) Reductive activation for 5 hours.

Example Embodiment

[0028] Example 2

[0029] The catalyst of Example 2 is 10% W-5.0% Re-1.0% Ru / apricot core charcoal. In addition to the configuration 15ml contains 1.5443g (NH 4 ) 2 WO 4 Except for the aqueous solution, the rest of the preparation steps are the same as in Example 1.

Example Embodiment

[0030] Example 3

[0031] The catalyst of Example 3 is 10% W-5.0% Re-1.0% Ru / coconut shell charcoal. Except for weighing 8.40 grams of coconut shell charcoal, the rest of the preparation steps are the same as in Example 2.

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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...

Claims

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Application Information

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IPC IPC(8): B01J23/656C07C31/08C07C29/149
Inventor 丁云杰王涛吕元马立新宋勤华邵守言凌晨曹宏兵李兴龙
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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