Perovskite composite oxide catalyst for preparing methyl alcohol from methane as well as preparation method of catalyst

A composite oxide and perovskite technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, oxidation reaction preparation, physical/chemical process catalyst, etc., can solve the problems of complex methanol process and high energy consumption, etc. Achieve the effect of simple process operation, simple regeneration operation and low operation cost

Inactive Publication Date: 2014-07-30
NORTHEAST GASOLINEEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a perovskite composite oxide catalyst for methane to methanol, which is used to improve the complex process of traditional methane indirect prepar

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh 3.2581gLa 2 o 3 , 1.2779gTiO 2 and 0.3194gFe 2 o 3 The powder is fully mixed evenly with a ball mill, the mixing time is 5 hours, and the rotation speed is 200r / min, and then the tablet is compressed with a powder tablet press at a pressure of 20 MPa, and the compression time is 10 minutes. Put the pressed flake mixture into a high-temperature tube furnace and roast it under the condition of feeding air. The roasting temperature is 1100 °C and the roasting time is 12 hours to form LaTi 0.8 Fe 0.2 o 3 Perovskite oxide, after cooling to room temperature, was ground and crushed by a ball mill to obtain 4.85g LaTi 0.8 Fe 0.2 o 3 powder. Weigh 4.5g Fe 2 o 3 with crushed 4.5g LaTi 0.8 Fe 0.2 o 3 After fully mixing, use a ball mill to fully mix, the mixing time is 6 hours, and the rotation speed is 200r / min, and then use a powder tablet press to perform tablet compression at a pressure of 20 MPa, and the tablet compression time is 10 minutes. Put the press...

Embodiment 2

[0030] Weigh 3.2581gLa 2 o 3 , 1.1981gTiO 2 and 0.3736g NiO powder were fully mixed evenly with a ball mill, the mixing time was 4h, and the rotation speed was 280r / min, and then tableting was performed with a powder tablet press at a pressure of 15MPa, and the tableting time was 10min. The pressed flake mixture is put into a high-temperature tube furnace and roasted under the condition of feeding air, the roasting temperature is 1200°C, and the roasting time is 12h, and the perovskite oxide LaTi is formed.0.75 Ni 0.25 o 3 , after cooling to room temperature, use a ball mill to grind and crush to obtain 4.82g LaTi 0.75 Ni 0.25 o 3 powder. Weigh 4.80g Fe 2 o 3 with crushed 4.80g LaTi 0.75 Ni 0.25 o 3 Fully mixed by a ball mill, the mixing time is 4 hours, and the rotation speed is 280 r / min, and then the tablets are compressed with a powder tablet press at a pressure of 15 MPa, and the tablet compression time is 10 minutes. Put the pressed sheet into a high-temperat...

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PUM

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Abstract

The invention relates to a perovskite composite oxide catalyst for preparing methyl alcohol from methane as well as a preparation method of the catalyst, wherein the perovskite composite oxide catalyst for preparing the methyl alcohol from the methane is a particulate matter, and has the general formula of Me(x)O(y)-A(l-m)A'(m)B(1-n)B'(n)O(3), wherein m is more than or equal to 0 and less than or equal to 1, n is more than or equal to 0 and less than or equal to 1, A is one of Ca and La, A' is one of Ba and Sr, B is one of Fe, Co, Ni and Mn, B' is one of Zr, Ti and Cr, and transition metal oxide Me(x)O(y) is one or two of Fe(2)O(3), N(i)O and Fe(3)O(4). The method provided by the invention is simple to operate, short in consumed time, and lower in operation expense by being compared with the operation expense in a traditional method for preparing the methyl alcohol from the methane. The catalyst provided by the invention can be used for oxidizing crystal lattices to prepare the methyl alcohol by CH4 at 500-500 DEG C; the methane conversion rate is 40-80%, and the methyl alcohol yield rate is 20-40%, and a novel method for preparing the methyl alcohol from the methane is provided.

Description

[0001] 1. Technical field: [0002] The invention relates to a perovskite composite oxide catalyst in the field of industrial catalysis application, in particular to a perovskite composite oxide catalyst used for methane to methanol and a preparation method thereof. 2. Background technology: [0003] Methane is widely distributed in nature and is the main component of natural gas, biogas, oilfield gas and coal mine tunnel gas. With the dwindling of oil resources and the continuous surge of oil prices, methane-rich natural gas, biogas, oil field gas and coal mine tunnel gas have gradually become the focus of attention. However, the utilization rate of methane in my country is not high at present, and rich The utilization rate of methane-containing natural gas energy in my country is only 4%, and the economic potential of biogas is only 1%. Facing the shortage of petroleum resources and the current situation of abundant methane reserves but low utilization rate, converting met...

Claims

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Application Information

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IPC IPC(8): B01J23/83C07C31/04C07C29/50
CPCY02P20/52
Inventor 陈彦广徐婷婷韩洪晶宋军袁瑞霞李凡星
Owner NORTHEAST GASOLINEEUM UNIV
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