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Catalyst for autothermal reformation of methanol to prepare hydrogen and its prepn process and application

A technology of autothermal reforming and catalysts, which is applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., to achieve the effects of easy replacement, small heat capacity and compact structure

Inactive Publication Date: 2007-03-21
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

Mature monolithic catalysts for autothermal reforming of methanol to hydrogen from non-noble metals have not been reported so far

Method used

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  • Catalyst for autothermal reformation of methanol to prepare hydrogen and its prepn process and application
  • Catalyst for autothermal reformation of methanol to prepare hydrogen and its prepn process and application
  • Catalyst for autothermal reformation of methanol to prepare hydrogen and its prepn process and application

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0039] Example 1: Preparation of Zn-Cr / Ce-Zr / cordierite catalyst

[0040] a) Take 1 piece of φ15×25mm 400cpsi (400 holes / square inch) cordierite honeycomb ceramics and use 3% HNO 3 Pretreatment for 12 hours, drying at 120°C for 12 hours, and roasting at 900°C for 2 hours for later use.

[0041] b) Weigh industrial grade Ce(NO 3 ) 3 ·6H 2 O 630g, add deionized water and stir to dissolve. Weigh industrial grade Zr(OH) 4 57.8g, put it into a beaker, add 110±2ml of 65-68% concentrated nitric acid, heat the reaction until there are no visible particles and the solution is transparent, add 200±10ml of deionized water, and the solution becomes clear. The dissolved Zr(NO 3 ) 4 The solution was poured into Ce(NO 3 ) 3 solution, filtered, stirred and mixed evenly to obtain Ce(NO 3 ) 3 with Zr(NO 3 ) 4 mixture. With 13% NH 4 OH as gelling agent, with 35% HNO 3 As a debonding agent, CeO was prepared by the sol-gel method 2 -ZrO 2 Composite oxide sol is for use. The mea...

example 2

[0045] Example 2: Preparation of Zn-Cr / Ti-Zr / cordierite catalyst

[0046] a) The pretreatment of the cordierite honeycomb ceramic carrier is the same as in Example 1.

[0047] b) Weighing analytically pure TiO 2 Powder 42.7535g, analytically pure ZrO 2 Powder 42.5780g, add 40ml deionized water and 4g pseudo-boehmite (Al 2 o 3 ·H 2 O), ball milled for 18 hours. The ball mill slurry is then adjusted to a pH value of 3.0 with 10% dilute nitric acid solution for later use.

[0048] c) Weigh the above-mentioned honeycomb ceramic carrier weight 2.2191g, with TiO 2 -ZrO 2 The composite oxide latex was immersed for 3 minutes, and after taking it out, the channel was purged with compressed air, dried in microwave for 3 minutes, and calcined in a muffle furnace at 500°C for 2 hours to obtain a catalyst intermediate weight of 2.6634g.

[0049] d) Measure 70ml of the Zn-Cr mixed solution of Example 1, move it into a beaker and place it on a temperature-programmed electric furnace ...

example 3

[0050] Example 3: Zn-Cr / Ce-Zr / Al 2 o 3 / cordierite catalyst preparation

[0051] a) The pretreatment of the cordierite honeycomb ceramic carrier is the same as in Example 1.

[0052] b) Weigh pseudo-boehmite (Al 2 o 3 ·H 2 O) 9.5g, gibbsite (Al(OH) 3 ) 12.4g, aluminum oxide (γ-Al 2 o 3 ) 14.3g, aluminum nitrate Al(NO 3 ) 3 9H 2 06.7g, after mixing, add 250ml of deionized water, 5ml of 65-68% nitric acid, ball milled for 12 hours to obtain an aluminum latex (slurry) with an average particle diameter of 1 μm, and record its viscosity as 1300 centipoise (cp), and the pH is 3.60.

[0053] c) Take 1 piece of pretreated carrier, weighing 1.4834g, impregnate it with aluminum latex for 3 minutes, blow the channel with compressed air after taking it out, dry it in microwave for 3 minutes, and roast it in a muffle furnace at 650°C for 2 hours to obtain the weight of the catalyst intermediate 1.5385g.

[0054] d) CeO 2 -ZrO 2 Composite oxide sol preparation and coating ar...

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Abstract

The catalyst has metal oxide without copper and noble metal as main active component and the composite oxide of RE and transition metal as transition layer assistant. Its preparation process includes coating transition layer assistant sol onto the carrier, drying and roasting, setting in boiled active component solution, heating the solution in the temperature raise rate of 1-2 deg.c / min to 130-190 deg.c, taking out the catalyst, blowing the catalyst to eliminate the residue in the catalyst passages, drying and roasting to obtain the catalyst. The catalyst needs activation before use, has methanol converting rate maintained in 100 % after use for 1000 hr and is suitable for use in hydrogen source system of fuel cell with unstable operation.

Description

technical field [0001] The invention relates to a methanol autothermal reforming hydrogen production catalyst. [0002] The present invention also relates to a method for preparing the above-mentioned catalyst. [0003] The invention also relates to the use of the catalysts described above. Background technique [0004] Since the beginning of fuel cell research, the use of alcohols or hydrocarbons to provide hydrogen sources for mobile power sources such as vehicle fuel cells through reforming reactions has always been one of the research hotspots in various countries. At present, automobile manufacturers in the United States, Germany, Japan and other countries have multiple methanol reforming and gasoline reforming hydrogen source fuel cell vehicles on display. At the same time, many large companies in the world have demonstrated fuel reforming and fuel cell integrated power generation devices. . In September 2002, Daimler Chrysler's NECAR 5 methanol reforming fuel cell ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/755B01J23/74B01J23/34B01J21/06B01J23/16C01B3/02H01M8/22
CPCY02E60/50
Inventor 王树东刘娜袁中山王淑娟张纯希付桂芝
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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