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Catalyst for producing synthetic gas by partial oxidation of methane using membrane reactor

A technology of membrane reactor and catalyst, which is applied in the catalyst and application field of membrane reactor using partial oxidation of methane to synthesize gas, which can solve the problems of changing catalyst reaction performance, poor anti-coking ability, carrier phase change, etc., and achieves low price , less carbon deposition, and the effect of warm synthesis conditions

Inactive Publication Date: 2003-05-21
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently widely studied Al 2 o 3 Although the supported Ni catalyst has high POM reactivity, its anti-coking ability is poor, and it is prone to deactivation due to carbon deposition, coking, and Ni aggregation. 2 o 3 The support is also prone to phase change at high temperature, thus changing the reaction performance of the catalyst

Method used

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  • Catalyst for producing synthetic gas by partial oxidation of methane using membrane reactor
  • Catalyst for producing synthetic gas by partial oxidation of methane using membrane reactor
  • Catalyst for producing synthetic gas by partial oxidation of methane using membrane reactor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] BaO·6Al was synthesized by coprecipitation method 2 o 3 carrier. Weigh the stoichiometric Ba(NO 3 ) 2 Dissolve in hot deionized water, add HNO 3 Adjust its pH ≈ 1, and finally add stoichiometric Al(NO 3 ) 3 9H 2 O. Add excess (NH 4 ) 2 CO 3 , continue heating at 70°C for 5 hours, filter, wash, dry, and roast at different temperatures for 7 hours to obtain powder. XRD powder diffraction method showed that the samples calcined above 1100℃ formed BaO·6Al 2 o 3 The structure of the carrier, such as figure 1 shown.

Embodiment 2

[0020] The supported NiO / BaO·6Al2O3 catalyst was synthesized by impregnation method. Weigh 0.04g of nickel acetate Ni(CH3COO)2·4H2O according to the weight ratio of the active component and the carrier to form a solution, add 2g of BaO·6Al2O3 carrier calcined at >1000°C, impregnate for 24 hours, and dry , and calcined at 850° C. for 5 hours to obtain a supported catalyst with a Ni loading amount of 0.5 wt%. The XRD measurement of supported NiO / BaO·6Al2O3 shows that Ni is well dispersed on the surface of the support, no NiO crystal phase occurs and the support maintains its structure. See figure 2 shown.

Embodiment 3

[0022] 0.08 g of nickel acetate was weighed, and the remaining conditions were the same as in Example 2 to obtain a supported catalyst with a Ni loading amount of 1 wt%.

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Abstract

The catalyst for preparing synthetic gas by utilizing partial oxidation of methane is composed of carrier and active component according to the weight ratio of 100:0.5-20, in whith its carrier is themixture of BaAl12O19, and its active component is one of Ni, Rh, Co or Ru. Its application condition is as follows: reaction temp. is 550-950 deg.C, reaction pressure is normal pressure and reaction space velocity is 1.2X10 to the power 4 ml.g(-1).h(-1), and the catalyst is Mo / BaO.6Al2O3 (in which the loading amount of active component is 0.5-20 % wt%).

Description

technical field [0001] The invention relates to a catalyst used in an atmospheric pressure membrane reactor and its application, in particular to a catalyst used in a membrane reactor to prepare synthesis gas by partial oxidation of methane and its application. Background technique [0002] With the depletion of petroleum resources, using natural gas with abundant natural reserves as an energy source to replace petroleum to prepare liquid fuels and other organic chemical products has attracted great attention from all over the world. The catalytic conversion of natural gas with methane as the main component can be divided into direct conversion and indirect conversion. Direct conversion is the direct oxidation of methane to produce liquid products such as formaldehyde and methanol. However, due to the fact that the direct conversion of oxygen is more active than the reactant, the product is further deeply oxidized and the selectivity of the target product is reduced. So far...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/02C01B3/38C01B3/40
CPCY02P20/52
Inventor 楚文玲盛世善杨维慎
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI