Catalyst for preparing C2-oxygenates through hydrogenation of carbon monoxide as well as preparation method and application thereof

A technology for the preparation of carbon monoxide and hydrogen, which is applied in the direction of metal/metal oxide/metal hydroxide catalyst, organic compound preparation, hydroxyl compound preparation, etc., which can solve the problem of high catalyst preparation cost, complicated treatment conditions, and carbon dioxide oxygen-containing compounds. Poor selectivity and other problems, to achieve the effect of overcoming low conversion rate of carbon monoxide, improving dispersion and improving selectivity

Inactive Publication Date: 2012-04-11
SHANGHAI APPLIED TECHNOLOGIES COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0009] The purpose of the present invention is to solve the shortcomings of the carbon monoxide synthesis catalyst in the prior art that the conversion rate of carbon monoxide is not high and/or the selectivity of carbon dioxygenates is poor or the catalyst pr

Method used

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  • Catalyst for preparing C2-oxygenates through hydrogenation of carbon monoxide as well as preparation method and application thereof
  • Catalyst for preparing C2-oxygenates through hydrogenation of carbon monoxide as well as preparation method and application thereof
  • Catalyst for preparing C2-oxygenates through hydrogenation of carbon monoxide as well as preparation method and application thereof

Examples

Experimental program
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Example Embodiment

[0033] Example 1

[0034] A catalyst A for the hydrogenation of carbon monoxide to prepare carbon dioxide oxygenates, which is based on monodisperse SiO 2 As a carrier, its composition is Rh-Mn-Li / SiO 2 , Where each metal is relative to the monodisperse carrier SiO 2 The mass percentage of Rh: Mn: Li: SiO 2 It is 1.5:1.5:0.075:100.

[0035] The above-mentioned preparation method of catalyst A for the hydrogenation of carbon monoxide to prepare carbon dioxide oxygenates includes the following steps:

[0036] (1) Prepare monodisperse SiO by sol-gel method 2 Carrier

[0037] Slowly drip the ethanol solution (50ml) of tetraethylorthosilicate with a volume percentage of 20% into the mixture of 76ml ammonia and 210ml absolute ethanol at 15℃, magnetically stir for 2h, then age for 10h, The resulting suspension was centrifuged and washed three times with ethanol. The resulting product was dried at 90°C, and then calcined at 120°C for 4 hours to obtain monodisperse SiO 2 Carrier; its SEM im...

Example Embodiment

[0041] Example 2

[0042] A catalyst B for the hydrogenation of carbon monoxide to prepare carbon dioxide oxygenates, the monodisperse SiO in step (1) 2 The calcination temperature during the preparation of the carrier is 350℃, and the resulting SiO 2 The SEM image of the carrier is as figure 2 Shown from figure 2 It can be seen that the prepared SiO 2 Monodisperse SiO 2 ;

[0043] Others are the same as in Example 1, and finally a catalyst B for carbon monoxide hydrogenation to prepare carbon dioxide oxygenates is obtained.

Example Embodiment

[0044] Example 3

[0045] A catalyst C for the hydrogenation of carbon monoxide to prepare carbon dioxide oxygenates, the monodisperse SiO in step (1) 2 The calcination temperature during the preparation of the carrier is 500℃, and the resulting SiO 2 The SEM image of the carrier is as image 3 Shown from image 3 It can be seen that the prepared SiO 2 Monodisperse SiO 2 ;

[0046] Others are the same as in Example 1, and finally a catalyst C for carbon monoxide hydrogenation to prepare carbon dioxide oxygenates is obtained.

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Abstract

The invention discloses a catalyst for preparing C2-oxygenates through hydrogenation of carbon monoxide as well as a preparation method and an application thereof. The catalyst takes monodisperse SiO2 as a carrier and is prepared by a dipping method. The composition of the catalyst is as follows: Rh-Mn-Li/SiO2, wherein the mass ratio of the metals to the monodisperse SiO2 carrier is as follows: Rh: Mn: Li: SiO2 is (0.1-5): (0.02-5): (0.02-5): 100. The preparation method comprises the following steps of: preparing a monodisperse carrier SiO2, roasting the carrier at the temperature of 200-700 DEG C, and dipping the carrier through nitrate or chloride of metallic components, drying for 1-20 hours at the temperature of 30-200DEG C, thus obtaining the catalyst for preparing C2-oxygenates through hydrogenation of carbon monoxide. The catalyst for preparing C2-oxygenates through hydrogenation of carbon monoxide has the advantages of high conversion rate of carbon monoxide and good selectivity of C2-oxygenates.

Description

technical field [0001] The invention relates to a catalyst for preparing carbon dioxide oxygen-containing compounds through hydrogenation of carbon monoxide, a preparation method and application thereof. Background technique [0002] Carbon two (C) such as ethanol, acetaldehyde and acetic acid 2 ) Oxygenates are important chemical raw materials, and ethanol is also an ideal vehicle fuel and gasoline additive. Currently, C 2 Oxygenates are produced from petroleum or grain. In recent years, with the rising price of crude oil and the increasing shortage of food supply, people are seeking to replace C 2 Methods for the traditional production route of oxygenates. Therefore, the synthesis gas (CO+H 2 ) system C 2 The research and development of oxygenate technology can not only help to solve the above problems, but also make full use of resources such as coal, natural gas and biomass. In addition, the one-step synthesis gas C 2 Oxygenated compounds can greatly simplify the...

Claims

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Application Information

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IPC IPC(8): B01J23/656C07C29/158C07C31/08
Inventor 毛东森俞俊周坤卢冠忠
Owner SHANGHAI APPLIED TECHNOLOGIES COLLEGE
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