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Composite oxide solid solution catalyst, preparation method and application thereof

A composite oxide and solid solution technology, applied in the direction of metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc. Slow, reforming side surface oxygen partial pressure rises and other issues, to achieve the effect of increasing oxygen permeability and reducing oxygen partial pressure

Inactive Publication Date: 2016-06-15
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Subsequently, due to the slowing down of the catalytic reforming reaction process, the oxygen partial pressure on the surface of the reforming side increases, and the oxygen permeability of the oxygen permeable membrane will decrease.

Method used

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  • Composite oxide solid solution catalyst, preparation method and application thereof
  • Composite oxide solid solution catalyst, preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0022] In this embodiment, a preparation method of the composite oxide solid solution catalyst of the present invention uses active MgO and Co 3 o 4 The oxide powder mixture is used as the reactant raw material. According to the ratio of the atomic ratio of Mg and Co to 8 / 2, weigh the MgO oxide powder and Co 3 o 4 Oxide powder, the reactants are mixed, and the mixed reactants and absolute ethanol are fully mixed to form a mixture, and the mixture is wet ball milled for 20 hours, then dried at 120°C, and finally roasted at 1000°C for 10 hours, adopt the oxide powder solid-phase reaction method to prepare the catalyst carrier, then impregnate the prepared catalyst carrier into the ruthenium chloride solution, the loading capacity of ruthenium is 1.8wt%, then dry it, and bake it at 600°C for 5 hours to prepare A composite oxide solid solution catalyst containing noble metal Ru was obtained.

Embodiment 2

[0024] This embodiment is basically the same as Embodiment 1, especially in that:

[0025] In this example, BaCo 0.7 Fe 0.2 Nb 0.1 o 3-δ Oxygen-permeable membrane of components, the effective diameter of the oxygen-permeable membrane is 15mm, and the thickness is 1.0mm. Utilize the composite oxide solid solution catalyst roasted in Example 1 to grind into a fine powder of 7 μm, add the composite oxide solid solution catalyst to an organic solvent to obtain a suitable viscosity for coating on BaCo 0.7 Fe 0.2 Nb 0.1 o 3-δ The solid solution catalyst coating slurry on the surface of the oxygen permeable membrane adopts the method of single-sided coating, and the solid solution catalyst coating slurry is directly coated on the reforming side surface of the mixed conductor oxygen permeable membrane, and then the solid solution catalyst coating is applied The oxygen permeable membrane after the slurry is baked at 1000°C for 1 hour, so that the solid solution catalyst coating ...

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Abstract

The invention discloses a composite oxide solid solution catalyst A<x>B<1-x>O<y>, wherein the A is a mixed element composed of one or more selected from Ba, Sr, Mg, La, Ca, Zr, Ti and Ce, the B is a mixed element composed of one or more selected from Co, Fe, Ni, Ru, Rh, Pt and Pd. Atomic ratio of A to B is 0 < x < 1 and 2.5 < y < 3. The composite oxide solid solution catalyst has high catalytic activity and excellent carbon deposition resistance to a surface oxidation reaction at a reforming side of an oxygen permeable membrane. The catalyst directly has excellent bonding capability when coating the reforming side surface of a compact oxygen permeable membrane, and is suitable for industrial application.

Description

technical field [0001] The invention relates to a coating material and its preparation and method of use, in particular to a solid solution catalyst coating material and its preparation and method of use, which are applied to the technical field of mixed conductor oxygen-permeable membranes. Background technique [0002] Mixed conductor oxygen permeable membrane is an important type of inorganic membrane in high temperature gas separation and membrane catalytic reaction. The reason why it is called mixed conductor membrane material means that the material has the characteristics of electron and oxygen ion conductivity at the same time, and the transmission of oxygen in the membrane The driving force is the oxygen partial pressure difference on both sides of the membrane. As long as there is an oxygen partial pressure difference on both sides of the membrane, oxygen will be continuously transported from the high oxygen partial pressure side to the low oxygen partial pressure s...

Claims

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Application Information

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IPC IPC(8): B01J23/89B01D67/00
CPCB01J23/8946B01D67/0041
Inventor 张玉文张莉莉郭伟丁伟中鲁雄刚
Owner SHANGHAI UNIV
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