Catalyst for preparing synthesis gases through dry methane reforming (DMR) and preparation method thereof

A carbon dioxide and catalyst technology, which is applied in the field of nickel-based catalyst and its preparation, achieves the effects of high conversion rate, reduced cost, good anti-coking performance and good stability

Active Publication Date: 2012-04-18
XUZHOU FENGTONG INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to provide a bimetallic catalyst for producing synthesis gas by reforming methane and carbon dioxide and a preparation m

Method used

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  • Catalyst for preparing synthesis gases through dry methane reforming (DMR) and preparation method thereof
  • Catalyst for preparing synthesis gases through dry methane reforming (DMR) and preparation method thereof
  • Catalyst for preparing synthesis gases through dry methane reforming (DMR) and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032]The components and mass percentages of the catalyst for producing synthesis gas by reforming methane and carbon dioxide are:

[0033]

[0034] The concrete steps of the preparation method of the catalyst of a kind of methane carbon dioxide reforming synthesis gas are as follows:

[0035] (1) Preparation of mesoporous MgAl 2 o 4 spinel carrier

[0036] First according to the ratio of the molar weight (mol) of magnesium nitrate: the molar weight (mol) of aluminum nitrate: the volume (ml) of distilled water is the ratio of 1: 2: 1300, magnesium nitrate and aluminum nitrate are added into distilled water, stir until Dissolved to prepare A mixed liquid. Then by the molar weight (mol) of cetyltrimethylammonium bromide: the volume (ml) of citric acid: the ratio of the volume (ml) of ethylene glycol is the ratio of 1: 2300: 300, under stirring condition First, mix cetyltrimethylammonium bromide and citric acid evenly, then add ethylene glycol and mix evenly to make B mixe...

Embodiment 2

[0042] The components and mass percentages of the catalyst for producing synthesis gas by reforming methane and carbon dioxide are:

[0043]

[0044] A preparation method of a catalyst for methane carbon dioxide reforming synthesis gas, same as embodiment 1, wherein:

[0045] In the (1) step, mixed solution A is made up of the ratio of 1: 1.7: 1000 by the molar weight (mol) of magnesium nitrate: the molar weight (mol) of aluminum nitrate: the volume (ml) of distilled water. The mixed liquid B is made up with the ratio of molar weight (mol) of cetyltrimethylammonium bromide: volume (ml) of citric acid: volume (ml) of ethylene glycol is 1: 2000: 200. The temperature in the constant temperature water bath was 80°C. The temperature in the drying oven was 130° C., and the drying time was 45 hours. The calcination temperature in the muffle furnace was 680° C., and the calcination time was 5.5 hours.

[0046] In the (2) step, mixed solution C is made up of the ratio of 1: 0.2: ...

Embodiment 3

[0049] The components and mass percentages of the catalyst for producing synthesis gas by reforming methane and carbon dioxide are:

[0050]

[0051] A preparation method of a catalyst for methane carbon dioxide reforming synthesis gas, same as embodiment 1, wherein:

[0052] In the 1st (1) step, mixed solution A is made up of the ratio of 1: 2.3: 1500 by the molar weight (mol) of magnesium nitrate: the molar weight (mol) of aluminum nitrate: the ratio of the volume (ml) of distilled water. The mixed liquid B is made up in the ratio of 1:2500:400 molar weight (mol) of cetyltrimethylammonium bromide: volume (ml) of citric acid: volume (ml) of ethylene glycol. The temperature in the constant temperature water bath was 70°C. The temperature in the drying oven was 110° C., and the drying time was 55 hours. The calcination temperature in the muffle furnace was 720° C., and the calcination time was 5 hours.

[0053] In the (2) step, the mixed solution C is made up of nickel ni...

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Abstract

The invention provides a catalyst for preparing synthesis gases through dry methane reforming (DMR) and a preparation method thereof, belonging to the technical field of catalysts for preparing synthesis gases through DMR. The catalyst is formed by nickel, iron, cerium oxide and magnesia-alumina spinel. The method comprises the following steps of: firstly preparing a mesoporous MgAl2O4 spinel carrier, then preparing a nickel-based catalyst suspension and finally preparing the finished product through such simple processes as filtering, washing, drying and roasting. The catalyst and the preparation method have the following beneficial effects that: as such non-precious metal raw materials as nickel and iron are adopted and the raw material sources are wide, the cost is low; the process is simple, the equipment is simple and the production cost is low; the prepared product has high catalytic activity; the conversion rates of methane and carbon dioxide are high; and the carbon depositionresistance and stability are good. The catalyst can be widely used for preparing synthesis gases through DMR.

Description

technical field [0001] The invention belongs to the technical field of catalysts used for methane carbon dioxide reforming to produce synthesis gas, in particular to a nickel-based catalyst for methane carbon dioxide reforming to produce synthesis gas and a preparation method thereof. technical background [0002] Several methods are commonly used to produce synthesis gas from methane, such as partial oxidation of methane (POM), steam reforming of methane (SRM), and carbon dioxide reforming of methane (DMR). Among them, the reforming of methane and carbon dioxide is a strong endothermic process, and the reaction formula is as follows: [0003] CH 4 +CO 2 =2H 2 +2CO [0004] The ratio of hydrogen to carbon monoxide in the synthesis gas (hydrogen and carbon monoxide) produced by this reaction is theoretically 1. Synthesis gas is an ideal raw material for Fischer-Tropsch synthesis to prepare liquid fuels such as diesel and paraffin, and is also an important raw material f...

Claims

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Application Information

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IPC IPC(8): B01J23/83C01B3/40
CPCY02P20/52
Inventor 董立春张涛江寒梅郑晓斌刘雄陈泥程张雅峥唐成黎
Owner XUZHOU FENGTONG INFORMATION TECH CO LTD
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