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Dimethoxym ethane renormalized hydrogen production catalyst and preparation method and purpose thereof

A reforming catalyst, reforming hydrogen production technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as no substantial research has been carried out

Inactive Publication Date: 2007-07-18
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Regarding the reforming of methylal to produce hydrogen, there have been literatures mentioning its possibility (US 6054228), but no substantive research has been carried out

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1: 10% V 2 o 5 / TiO 2 Preparation of Methylal Hydrolysis Catalyst

[0032] Mix 25.0g of ammonium metavanadate and 50.0g of oxalic acid, add 211.0ml of water, stir and dissolve to obtain a dark green solution, add 176.0g of powdered titanium dioxide to the above dark green solution and stir to form a light green paste, and place it for 2 hours Dry at 110°C for 12 hours, and then bake in air at 400°C for 6 hours to obtain 2 o 5 Yellow powder form of methylal hydrolysis catalyst B. Analyzing catalyst composition, V 2 o 5 The mass content is 9.9%.

Embodiment 2

[0033] Example 2: 5% V 2 o 5 / TiO 2 Preparation of Methylal Hydrolysis Catalyst

[0034] Mix 20.0g of ammonium metavanadate and 40.0g of oxalic acid, add 342.0ml of water, stir and dissolve to obtain a dark green solution, add 285.0g of titanium dioxide powder to the above dark green solution and stir to form a light green paste, and place it for 2 hours at 110 °C for 12 hours, and then baked in air at 400 °C for 6 hours to obtain a yellow powdery methylal hydrolysis catalyst C supported on titanium dioxide. Analyzing catalyst composition, V 2 o 5 The mass content is 5.0%.

Embodiment 3

[0035] Example 3: Preparation of methylal reforming catalyst by mixing methylal hydrolysis catalyst B with methanol reforming catalyst A 1:1

[0036] Weigh 15.0g of powdery methylal hydrolysis catalyst B and 15.0g of powdery methanol reforming catalyst A, mix and grind in a mortar, mix thoroughly and press into tablets, then crush the tablets, sieve, and take 20-40 mesh Particles are used for activity assays. This catalyst sample was designated Catalyst D.

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PUM

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Abstract

The catalyst for methylal reforming to prepare hydrogen is mixture of methylal hydrolyzing catalyst and methanol reforming catalyst in the mass ratio of 1 / 3-3. The methylal hydrolyzing catalyst contains V2O5 in 5-10 wt% and TiO2. Using the catalyst of the present invention in methylal and water reforming to prepare hydrogen has mild reaction condition, high hydrogen selectivity and less side products. At 240 deg.c, there may be methylal converting rate up to 97.7-100 % and H2 selectivity up to 98.3-99.9 %.

Description

1. Technical field [0001] The invention relates to a catalyst for hydrogen production by reforming methylal, a preparation method thereof and a hydrogen production method using the catalyst. 2. Background technology [0002] The reaction of hydrocarbons and oxygen-containing organic compounds with water in the presence of catalysts, that is, the reforming reaction, is a common method for producing hydrogen. Such compounds used to produce hydrogen include methane, gasoline, coal, naphtha, methanol, dimethyl ether, and others. Among them, methane, coal, and naphtha are widely used in industrial-scale hydrogen production processes, while the research on hydrogen production from methanol, gasoline, and dimethyl ether focuses on small hydrogen sources and mobile hydrogen sources. Small hydrogen source for hydrogen demand 2000m 3 In the case of less than / h, the mobile hydrogen source is generally to provide hydrogen for the fuel cell. [0003] The energy utilization efficiency...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/06B01J23/887C01B3/40
CPCY02P20/52
Inventor 沈俭一傅玉川
Owner NANJING UNIV