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

A technology for reforming catalysts and hydrogen production by reforming, which is applied in the fields of chemical instruments and methods, hydrogen, inorganic chemistry, etc., and can solve problems such as no substantive research

Inactive Publication Date: 2005-08-17
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

[0030] Example 1: 10%V 2 O 5 / TiO 2 Preparation of methylal hydrolysis catalyst

[0031] Mix 25.0g of ammonium metavanadate and 50.0g of oxalic acid, add 211.0ml of water, stir to 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, leave it for 2 hours Dry at 110°C for 12 hours, and then roast in the air at 400°C for 6 hours to obtain V 2 O 5The yellow powdery methylal hydrolysis catalyst B. Analyze the catalyst composition, V 2 O 5 The mass content is 9.9%.

Embodiment 2

[0032] Example 2: 5% V 2 O 5 / TiO 2 Preparation of methylal hydrolysis catalyst

[0033] Mix 20.0g of ammonium metavanadate and 40.0g of oxalic acid, add 342.0ml of water, stir to 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. It was dried at ℃ for 12 hours, and then calcined in the air at 400 ℃ for 6 hours to obtain a yellow powdery methylal hydrolysis catalyst C supported by titanium dioxide. Analyze the catalyst composition, V 2 O 5 The mass content is 5.0%.

Embodiment 3

[0034] Example 3: Methylal hydrolysis catalyst B and methanol reforming catalyst A are mixed 1:1 to prepare methylal reforming catalyst

[0035] Weigh 15.0g of powdered methylal hydrolysis catalyst B and 15.0g of powdered methanol reforming catalyst A, mix them in a mortar, mix them thoroughly, and press tablets, then crush the tablets, sieving, and take 20-40 mesh The particles are used for activity determination. This catalyst sample is designated as 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 method for producing hydrogen by using the catalyst. 2. Background technology [0002] Hydrocarbons and oxygen-containing organic compounds react with water in the presence of a catalyst, that is, reforming reaction, which is a common method for preparing hydrogen. Such compounds used for hydrogen production include methane, gasoline, coal, naphtha, methanol, dimethyl ether and the like. Among them, methane, coal and naphtha are widely used in industrial-scale hydrogen production processes, while the research on hydrogen production of 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 below / h, the mobile hydrogen source is generally used to provide hydrogen to the fuel cell. [0003] The energy utilization efficiency of fuel ce...

Claims

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Application Information

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